| January 10, 1948 | | Kingsbridge Armory, Bronx, NY | Midget | Tony Bonadies |
| January 17, 1948 | | Kingsbridge Armory, Bronx, NY | Midget | Tony Bonadies |
| January 18, 1948 | 2o Gran Premio del General Juan Perón | Parque Palermo, Buenos Aires, Argentina | ACA Temporada Formula Libre | Luigi Villoresi |
| January 25, 1948 | 1o Gran Premio del General San Martín | El Torreón, Mar Del Plata, Argentina | ACA Temporada Formula Libre | Giuseppe Farina |
| January 31, 1948 | | Kingsbridge Armory, Bronx, NY | Midget | Tony Bonadies |
| February 1, 1948 | 2a Copa Acción de San Lorenzo | Parque Independencia, Rosario, Santa Fe, Argentina | ACA Temporada Formula Libre | Jean-Pierre Wimille |
| February 7, 1948 | | Kingsbridge Armory, Bronx, NY | Midget | Al Keller |
| February 14, 1948 | 2o Gran Premio de Eva Duarte Perón | Parque Palermo, Buenos Aires, Argentina | ACA Temporada Formula Libre | Luigi Villoresi |
| February 14, 1948 | | Kingsbridge Armory, Bronx, NY | Midget | Tony Bonadies |
| February 15, 1948 | Rayson Memorial | Daytona Beach Road Course, Daytona Beach, FL | NASCAR Modified | Red Byron |
| February 18, 1948 | | Kingsbridge Armory, Bronx, NY | Midget | Tony Bonadies |
| February 28, 1948 | | Speedway Park, Jacksonville, FL | NASCAR Modified | Fonty Flock |
| February 28, 1948 | | Kingsbridge Armory, Bronx, NY | Midget | Tony Bonadies |
| March 3, 1948 | | Kingsbridge Armory, Bronx, NY | Midget | Johnny Ritter |
| March 6, 1948 | | Kingsbridge Armory, Bronx, NY | Midget | Tony Bonadies |
| March 20, 1948 | | Kingsbridge Armory, Bronx, NY | Midget | Len Duncan |
| March 21, 1948 | | Lakewood Speedway, Atlanta, GA | AAA Sprint Car | Ted Horn |
| March 21, 1948 | 3o Grande Prêmio de Interlagos | Autódromo José Carlos Pace, São Paulo, Brazil | Temporada Formula Libre | Francisco Sacco Landi |
| March 27, 1948 | | Lakewood Speedway, Atlanta, GA | NASCAR Modified | Fonty Flock |
| March 27, 1948 | | Kingsbridge Armory, Bronx, NY | Midget | Johnny Ritter |
| March 28, 1948 | 100 Millas Playas de Necochea | Playas de Necochea, Necochea, Argentina | ACA Temporada Formula Libre | Oscar Alfredo Gálvez |
| March 29, 1948 | 9e Grand Prix du Pau | Circuit de Pau, Pau, France | FIA Formula One | Nello Pagani |
| April 3, 1948 | | Kingsbridge Armory, Bronx, NY | Midget | Ted Tappett |
| April 4, 1948 | Berks County Bicentennial | Reading Fairgrounds, Reading, PA | AAA Sprint Car (Eastern) | Ted Horn |
| April 4, 1948 | | Central City Speedway, Macon, GA | NASCAR Modified | Fonty Flock |
| April 4, 1948 | 32o Targa Florio | Targa Florio, Palermo, Italy | Sports Car | Clemente Biondetti
Igor Troubetskoy |
| April 11, 1948 | | Hayloft Speedway, Augusta, GA | NASCAR Modified | Bob Flock |
| April 17, 1948 | | Williams Grove Speedway, Mechanicsburg, PA | AAA Sprint Car (Eastern) | Ted Horn |
| April 18, 1948 | | Trenton International Speedway, Trenton, NJ | AAA Sprint Car (Eastern) | Ted Horn |
| April 18, 1948 | | Speedway Park, Jacksonville, FL | NASCAR Modified | Skimp Hersey |
| April 18, 1948 | | Greensboro Fairgrounds, Greensboro, NC | NASCAR Modified | Fonty Flock |
| April 18, 1948 | | Cherry Park Speedway, Avon, CT | ARDC Midget | Ted Tappett |
| April 19, 1948 | | Westboro Speedway, Westborough, MA | Midget | Bill Randall |
| April 25, 1948 | H.H. Wheler Memorial Cup | Arlington Downs Raceway, Arlington, TX | AAA Indy Car | Ted Horn |
| April 25, 1948 | 9o Grande Prêmio da Cidade de Rio de Janeiro | Gávea, Rio de Janeiro, Brazil | Temporada Formula Libre | Francisco Sacco Landi |
| April 25, 1948 | 3e Grand Prix du Roussillon | Circuit de Perpignan, Perpignan, France | FIA Formula 2 | Maurice Trintignant |
| April 25, 1948 | | North Wilkesboro Speedway, North Wilkesboro, NC | NASCAR Modified | Red Byron |
| April 25, 1948 | | Salem Speedway, Salem, IN | AAA Sprint Car (Midwest) | Spider Webb |
| April 25, 1948 | | Cherry Park Speedway, Avon, CT | ARDC Midget | Bill Schindler |
| April 29, 1948 | 2nd JCC Jersey Road Race | Jersey Street Circuit, St. Helier, Jersey | FIA Formula One | Bob Gerard |
| May 1, 1948 | | Allentown Fairgrounds, Allentown, PA | AAA Sprint Car (Eastern) | Bill Randall |
| May 1, 1948 | | West Springfield Speedway, West Springfield, MA | Midget | Bill Schindler |
| May 1, 1948 | | Danbury Fairgrounds, Danbury, CT | ARDC Midget | Ted Tappett |
| May 2, 1948 | | Reading Fairgrounds, Reading, PA | AAA Sprint Car (Eastern) | Ted Horn |
| May 2, 1948 | 2e Grand Prix des Nations | Circuit des Nations, Geneva, Switzerland | FIA Formula One | Giuseppe Farina |
| May 2, 1948 | 2e Grand Prix de Genève | Circuit des Nations, Geneva, Switzerland | FIA Formula 2 | Raymond Sommer |
| May 2, 1948 | | Lakeview Speedway, Lexington, NC | NASCAR Modified | Red Byron |
| May 2, 1948 | Mille Miglia | Mille Miglia, Bresda, Italy | Sports Car | Giuseppe Navone
Clemente Biondetti |
| May 2, 1948 | | Winchester Speedway, Winchester, IN | AAA Sprint Car (Midwest) | Spider Webb |
| May 2, 1948 | | Cherry Park Speedway, Avon, CT | ARDC Midget | Lloyd Christopher |
| May 3, 1948 | | Candlelight Stadium, Bridgeport, CT | ARDC Midget | Ted Tappett |
| May 4, 1948 | | Hinchliffe Stadium, Paterson, NJ | Midget | Bill Schindler |
| May 6, 1948 | | Yellow Jacket Speedway, Philadelphia, PA | Midget | Tony Bonadies |
| May 6, 1948 | | West Haven Speedway, West Haven, CT | ARDC Midget | George Rice |
| May 8, 1948 | | West Springfield Speedway, West Springfield, MA | Midget | Al Keller |
| May 8, 1948 | | Danbury Fairgrounds, Danbury, CT | ARDC Midget | Bill Schindler |
| May 9, 1948 | | Dayton Speedway, Dayton, OH | AAA Sprint Car (Midwest) | Spider Webb |
| May 9, 1948 | Gran Premio di Apertura | Circuito delle Terme di Vercelli, Vercelli, Italy | FIA Formula 2 | Felice Bonetto |
| May 9, 1948 | | Wadesboro, Wadesboro, NC | NASCAR Modified | Red Byron |
| May 9, 1948 | Eläintarhan ajot | Djurgårdsloppet, El, Finland | Sports Car | Mangus Knutsson |
| May 9, 1948 | Gran Premio di Apertura | Circuito delle Terme di Vercelli, Vercelli, Italy | Sports Car | Guido Scagliarini |
| May 9, 1948 | | Trenton International Speedway, Trenton, NJ | AAA Sprint Car (Eastern) | Ted Horn |
| May 9, 1948 | | Cherry Park Speedway, Avon, CT | ARDC Midget | George Rice |
| May 9, 1948 | | Hudson Speedway, Hudson, NH | Midget | Bud Tatro |
| May 9, 1948 | | Orange County Fair Speedway, Middletown, NY | ARDC Midget | Tony Bonadies |
| May 10, 1948 | | Yellow Jacket Speedway, Philadelphia, PA | Midget | Dutch Schaefer |
| May 10, 1948 | | Candlelight Stadium, Bridgeport, CT | ARDC Midget | Ted Tappett |
| May 11, 1948 | | Rhinebeck Speedway, Rhinebeck, NY | ARDC Midget | Ted Tappett |
| May 11, 1948 | | Hinchliffe Stadium, Paterson, NJ | Midget | Bill Schindler |
| May 12, 1948 | | Empire Raceway, Menands, NY | ARDC Midget | Al Keller |
| May 15, 1948 | | West Springfield Speedway, West Springfield, MA | Midget | Ted Tappett |
| May 15, 1948 | | Danbury Fairgrounds, Danbury, CT | ARDC Midget | Bill Schindler |
| May 16, 1948 | 10e Grand Prix de Monaco | Circuit de Monaco, Monte Carlo, Monaco | FIA Formula One | Giuseppe Farina |
| May 16, 1948 | | Richmond International Raceway, Richmond, VA | NASCAR Modified | Red Byron |
| May 16, 1948 | 18e Grand Prix des Frontières | Les Rues de Chimay, Chimay, Belgium | Sports Car S1.1 | Raymond de Saugé Destrez |
| May 16, 1948 | 18e Grand Prix des Frontières | Les Rues de Chimay, Chimay, Belgium | Sports Car S2.0 | Raymond de Saugé Destrez |
| May 16, 1948 | 18e Grand Prix des Frontières | Les Rues de Chimay, Chimay, Belgium | Sports Car S+2.0 | Guy Mairesse |
| May 16, 1948 | | Salem Speedway, Salem, IN | AAA Sprint Car (Midwest) | Ted Horn |
| May 17, 1948 | | Yellow Jacket Speedway, Philadelphia, PA | Midget | Larry Bloomer |
| May 18, 1948 | | Hinchliffe Stadium, Paterson, NJ | Midget | Dee Toran |
| May 18, 1948 | | Princess Anne Speedway, Norfolk, VA | Midget | Lloyd Christopher |
| May 19, 1948 | | Empire Raceway, Menands, NY | ARDC Midget | Al Keller |
| May 19, 1948 | | Richmond International Raceway, Richmond, VA | ARDC Midget | Shorty McAndrews |
| May 20, 1948 | | Dracut Speedway, Dracut, MA | Midget | Bud Tatro |
| May 20, 1948 | | Yellow Jacket Speedway, Philadelphia, PA | Midget | Mike Josephs |
| May 20, 1948 | | Orange County Fair Speedway, Middletown, NY | ARDC Midget | Mike Nazaruk |
| May 20, 1948 | | West Haven Speedway, West Haven, CT | ARDC Midget | Bill Schindler |
| May 21, 1948 | | Freeport Speedway, Freeport, NY | ARDC Midget | Ted Tappett |
| May 21, 1948 | | Hinchliffe Stadium, Paterson, NJ | Midget | Bill Schindler |
| May 22, 1948 | | Richmond International Raceway, Richmond, VA | AAA Sprint Car | Ted Horn |
| May 22, 1948 | | West Springfield Speedway, West Springfield, MA | Midget | Chet Gibbons |
| May 22, 1948 | | Danbury Fairgrounds, Danbury, CT | ARDC Midget | Rex Records |
| May 23, 1948 | | Williams Grove Speedway, Mechanicsburg, PA | AAA Sprint Car (Eastern) | Ted Horn |
| May 23, 1948 | | Central City Speedway, Macon, GA | NASCAR Modified | Gober Sosebee |
| May 23, 1948 | | Danville Speedway, Danville, VA | NASCAR Modified | Bill Blair |
| May 23, 1948 | | Dover Speedway, Dover, NJ | NASCAR Modified | Johnny Rogers |
| May 23, 1948 | | Warner Park, Chattanooga, TN | AAA Sprint Car | Bill Holland |
| May 23, 1948 | | Islip Speedway, Islip, NY | ARDC Midget | Dee Toran |
| May 23, 1948 | | Cherry Park Speedway, Avon, CT | ARDC Midget | Bill Baker |
| May 23, 1948 | | Hudson Speedway, Hudson, NH | Midget | Johnny Thomson |
| May 24, 1948 | | Candlelight Stadium, Bridgeport, CT | ARDC Midget | George Rice |
| May 25, 1948 | 10th British Empire Trophy | Isle of Man Circuit, Douglas, Isle of Man | FIA Formula One | Geoffrey Ansell |
| May 26, 1948 | | Empire Raceway, Menands, NY | ARDC Midget | Tony Bonadies |
| May 27, 1948 | | Dracut Speedway, Dracut, MA | Midget | Herm Delisle |
| May 27, 1948 | | Yellow Jacket Speedway, Philadelphia, PA | Midget | Dutch Schaefer |
| May 27, 1948 | | Orange County Fair Speedway, Middletown, NY | ARDC Midget | Dee Toran |
| May 27, 1948 | | West Haven Speedway, West Haven, CT | ARDC Midget | George Rice |
| May 28, 1948 | | Freeport Speedway, Freeport, NY | ARDC Midget | Ted Tappett |
| May 28, 1948 | | Stafford Motor Speedway, Stafford Springs, CT | ARDC Midget | Bill Dils |
| May 28, 1948 | | Hinchliffe Stadium, Paterson, NJ | Midget | Bill Schindler |
| May 29, 1948 | | Greensboro Fairgrounds, Greensboro, NC | NASCAR Modified | Bob Flock |
| May 29, 1948 | Skarpnäcksloppet | Skarpnäcks Flygplats, Stockholm, Sweden | Sports Car S2.0 | Mangus Knutsson |
| May 29, 1948 | | Langhorne Speedway, Langhorne, PA | AAA Sprint Car (Eastern) | Mark Light |
| May 29, 1948 | | West Springfield Speedway, West Springfield, MA | Midget | Ted Tappett |
| May 30, 1948 | 2e Grand Prix de Paris | L'autodrome de Linas-Montlhéry, Montlhéry, France | FIA Formula One | Yves Giraud-Cabantous |
| May 30, 1948 | 2o Gran Premio di Bari | Circuito di Bari, Bari, Italy | FIA Formula 2 | Francisco Sacco Landi |
| May 30, 1948 | 1 Stockholms Grand Prix | Skarpnäcks Flygplats, Stockholm, Sweden | FIA Formula 2 | Birabongse Bhanudej Bhanubandh |
| May 30, 1948 | | Speedway Park, Jacksonville, FL | NASCAR Modified | Paul Pappy |
| May 30, 1948 | | North Wilkesboro Speedway, North Wilkesboro, NC | NASCAR Modified | Marshall Teague |
| May 30, 1948 | Skarpnäcksloppet | Skarpnäcks Flygplats, Stockholm, Sweden | Sports Car Class C | Karl-Evert Andersson |
| May 30, 1948 | Skarpnäcksloppet | Skarpnäcks Flygplats, Stockholm, Sweden | Sports Car Fiatklassen | Karl-Evert Andersson |
| May 30, 1948 | Skarpnäcksloppet | Skarpnäcks Flygplats, Stockholm, Sweden | Sports Car Class A | Gunnar Olsson |
| May 30, 1948 | | Winchester Speedway, Winchester, IN | AAA Sprint Car (Midwest) | Spider Webb |
| May 31, 1948 | Indianapolis 500 | Indianapolis Motor Speedway, Indianapolis, IN | AAA Indy Car | Mauri Rose |
| May 31, 1948 | | Candlelight Stadium, Bridgeport, CT | ARDC Midget | Ted Tappett |
| June 1, 1948 | | Freeport Speedway, Freeport, NY | ARDC Midget | Dutch Schaefer |
| June 1, 1948 | | Rhinebeck Speedway, Rhinebeck, NY | ARDC Midget | Tony Bonadies |
| June 1, 1948 | | Hinchliffe Stadium, Paterson, NJ | Midget | George Rice |
| June 1, 1948 | | Princess Anne Speedway, Norfolk, VA | Midget | Mike Josephs |
| June 2, 1948 | | Riverside Park Speedway, Agawam, MA | BSMRA Midget | Dick Shuebruk |
| June 2, 1948 | | Empire Raceway, Menands, NY | ARDC Midget | Tony Bonadies |
| June 2, 1948 | | Richmond International Raceway, Richmond, VA | ARDC Midget | Charlie Miller |
| June 3, 1948 | | Dracut Speedway, Dracut, MA | Midget | Joe Sostilio |
| June 3, 1948 | | Orange County Fair Speedway, Middletown, NY | ARDC Midget | Mike Nazaruk |
| June 3, 1948 | | West Haven Speedway, West Haven, CT | ARDC Midget | Bill Schindler |
| June 4, 1948 | | Danville Speedway, Danville, VA | NASCAR Modified | Bob Flock |
| June 4, 1948 | | Freeport Speedway, Freeport, NY | ARDC Midget | Johnny Zeke |
| June 4, 1948 | | Stafford Motor Speedway, Stafford Springs, CT | ARDC Midget | Bob Minor |
| June 4, 1948 | | Seekonk Speedway, Seekonk, MA | Midget | Bill Randall |
| June 4, 1948 | | Hinchliffe Stadium, Paterson, NJ | Midget | Mike Nazaruk |
| June 4, 1948 | | Lanham Speedway, Lanham, MD | ARDC Midget | Mike Josephs |
| June 5, 1948 | | Greensboro Fairgrounds, Greensboro, NC | NASCAR Modified | Red Byron |
| June 5, 1948 | | Polo Grounds, Manhattan, New York City, NY | ARDC Midget | Ray Nestor |
| June 5, 1948 | | West Springfield Speedway, West Springfield, MA | Midget | Walt Fusco |
| June 5, 1948 | | Thompson International Speedway, Thompson, CT | BSMRA Midget | Bill Randall |
| June 5, 1948 | | Dorney Park Speedway, Allentown, PA | ARDC Midget | Charlie Miller |
| June 5, 1948 | | Danbury Fairgrounds, Danbury, CT | ARDC Midget | Stan Disbrow |
| June 6, 1948 | | Milwaukee Mile, West Allis, WI | AAA Indy Car | Emil Andres |
| June 6, 1948 | | Lakeview Speedway, Lexington, NC | NASCAR Modified | Bob Flock |
| June 6, 1948 | | Williams Grove Speedway, Mechanicsburg, PA | AAA Sprint Car (Eastern) | Tommy Hinnershitz |
| June 6, 1948 | | Cherry Park Speedway, Avon, CT | ARDC Midget | Ted Tappett |
| June 6, 1948 | | Hudson Speedway, Hudson, NH | Midget | Chet Gibbons |
| June 8, 1948 | | Freeport Speedway, Freeport, NY | ARDC Midget | Dutch Schaefer |
| June 8, 1948 | | Rhinebeck Speedway, Rhinebeck, NY | ARDC Midget | Ray Nestor |
| June 8, 1948 | | Westboro Speedway, Westborough, MA | Midget | Joe Ross |
| June 8, 1948 | | Hinchliffe Stadium, Paterson, NJ | Midget | Al Keller |
| June 8, 1948 | | Princess Anne Speedway, Norfolk, VA | Midget | Charlie Miller |
| June 9, 1948 | | Lonsdale Sports Arena, Lonsdale, RI | Midget | Jimmy Florian |
| June 9, 1948 | | Richmond International Raceway, Richmond, VA | ARDC Midget | Charlie Miller |
| June 10, 1948 | | West Haven Speedway, West Haven, CT | ARDC Midget | Ted Tappett |
| June 11, 1948 | | Stafford Motor Speedway, Stafford Springs, CT | ARDC Midget | George Flemke |
| June 11, 1948 | | Seekonk Speedway, Seekonk, MA | Midget | Rex Records |
| June 11, 1948 | | Lanham Speedway, Lanham, MD | ARDC Midget | George Fonder |
| June 12, 1948 | | Mineola Fairgrounds, Mineola, NY | AAA Sprint Car (Eastern) | Ted Horn |
| June 12, 1948 | | Islip Speedway, Islip, NY | ARDC Midget | Steve McGrath |
| June 12, 1948 | | West Springfield Speedway, West Springfield, MA | Midget | Ted Tappett |
| June 12, 1948 | | Danbury Fairgrounds, Danbury, CT | ARDC Midget | Stan Disbrow |
| June 13, 1948 | 2o Coppa Giorgio e Alberto Nuvolari | Circuito di Mantova, Mantova, Italy | FIA Formula 2 | Felice Bonetto |
| June 13, 1948 | | Wadesboro, Wadesboro, NC | NASCAR Modified | Fonty Flock |
| June 13, 1948 | | Dayton Speedway, Dayton, OH | AAA Sprint Car (Midwest) | Ted Horn |
| June 13, 1948 | Circuito di Mantova | Circuito di Mantova, Mantova, Italy | Sports Car | Adolfo Macchieraldo |
| June 13, 1948 | | Charlotte Speedway, Charlotte, NC | AAA Sprint Car (Eastern) | Mark Light |
| June 14, 1948 | | Norwood Arena Speedway, Norwood, MA | Midget | Johnny Bernardi |
| June 14, 1948 | | Yellow Jacket Speedway, Philadelphia, PA | Midget | George Fonder |
| June 14, 1948 | | Candlelight Stadium, Bridgeport, CT | ARDC Midget | Ted Tappett |
| June 15, 1948 | | Freeport Speedway, Freeport, NY | ARDC Midget | Ted Tappett |
| June 15, 1948 | | Westboro Speedway, Westborough, MA | Midget | Johnny Thomson |
| June 15, 1948 | | Hinchliffe Stadium, Paterson, NJ | Midget | Al Keller |
| June 15, 1948 | | Hinchliffe Stadium, Paterson, NJ | Midget | Bill Schindler |
| June 15, 1948 | | Princess Anne Speedway, Norfolk, VA | Midget | Charlie Miller |
| June 16, 1948 | | Riverside Park Speedway, Agawam, MA | Midget | Bob Minor |
| June 16, 1948 | | Lonsdale Sports Arena, Lonsdale, RI | Midget | Bud Tatro |
| June 16, 1948 | | Empire Raceway, Menands, NY | ARDC Midget | Ray Nestor |
| June 16, 1948 | | Richmond International Raceway, Richmond, VA | ARDC Midget | Charlie Miller |
| June 17, 1948 | | Dracut Speedway, Dracut, MA | Midget | Dick Shuebruk |
| June 17, 1948 | | Yellow Jacket Speedway, Philadelphia, PA | Midget | Charlie Miller |
| June 17, 1948 | | Orange County Fair Speedway, Middletown, NY | ARDC Midget | Vernon Land |
| June 17, 1948 | | West Haven Speedway, West Haven, CT | ARDC Midget | Art Cross |
| June 18, 1948 | | Freeport Speedway, Freeport, NY | ARDC Midget | Ted Tappett |
| June 18, 1948 | | Stafford Motor Speedway, Stafford Springs, CT | ARDC Midget | Walt Fusco |
| June 18, 1948 | | Hinchliffe Stadium, Paterson, NJ | Midget | Bill Schindler |
| June 19, 1948 | | West Springfield Speedway, West Springfield, MA | Midget | Ted Tappett |
| June 19, 1948 | | Thompson International Speedway, Thompson, CT | Midget | Johnny Thomson |
| June 19, 1948 | | Danbury Fairgrounds, Danbury, CT | ARDC Midget | Tony Bonadies |
| June 20, 1948 | National Convention Sweepstakes | Langhorne Speedway, Langhorne, PA | AAA Indy Car | Walt Brown |
| June 20, 1948 | | Fairgrounds Raceway, Birmingham, AL | NASCAR Modified | Fonty Flock |
| June 20, 1948 | | Columbus Speedway, Columbus, GA | NASCAR Modified | Bob Flock |
| June 20, 1948 | | Greensboro Fairgrounds, Greensboro, NC | NASCAR Modified | Tim Flock |
| June 20, 1948 | | Cherry Park Speedway, Avon, CT | ARDC Midget | Bill Schindler |
| June 20, 1948 | | Hudson Speedway, Hudson, NH | Midget | Chet Gibbons |
| June 21, 1948 | | Polo Grounds, Manhattan, New York City, NY | ARDC Midget | Chet Gibbons |
| June 21, 1948 | | Norwood Arena Speedway, Norwood, MA | Midget | Bud Tatro |
| June 21, 1948 | | Candlelight Stadium, Bridgeport, CT | ARDC Midget | Ted Tappett |
| June 22, 1948 | | Freeport Speedway, Freeport, NY | ARDC Midget | Tony Bonadies |
| June 22, 1948 | | Rhinebeck Speedway, Rhinebeck, NY | ARDC Midget | Stan Disbrow |
| June 22, 1948 | | Westboro Speedway, Westborough, MA | Midget | Chet Gibbons |
| June 25, 1948 | | Freeport Speedway, Freeport, NY | ARDC Midget | Henry Renard |
| June 25, 1948 | | Stafford Motor Speedway, Stafford Springs, CT | ARDC Midget | Chet Conklin |
| June 25, 1948 | | Mohawk Midget Stadium, Lunenburg, MA | Midget | Johnny Bernardi |
| June 25, 1948 | | Seekonk Speedway, Seekonk, MA | Midget | Bill Randall |
| June 25, 1948 | | Hinchliffe Stadium, Paterson, NJ | Midget | Bill Schindler |
| June 26, 1948 | | West Springfield Speedway, West Springfield, MA | Midget | Bill Schindler |
| June 26, 1948 | | Thompson International Speedway, Thompson, CT | Midget | Chet Gibbons |
| June 26, 1948 | | Dorney Park Speedway, Allentown, PA | Midget | Lou Volk |
| June 26, 1948 | | Danbury Fairgrounds, Danbury, CT | ARDC Midget | Don Morris |
| June 27, 1948 | | Williams Grove Speedway, Mechanicsburg, PA | AAA Sprint Car (Eastern) | Ted Horn |
| June 27, 1948 | 3o Gran Premio di San Remo | Autodromo di Ospedaletti, Ospedaletti, Italy | FIA Formula One | Alberto Ascari |
| June 27, 1948 | | Occoneechee Speedway, Hillsboro, NC | NASCAR Modified | Fonty Flock |
| June 27, 1948 | | Salem Speedway, Salem, IN | AAA Sprint Car (Midwest) | Spider Webb |
| June 27, 1948 | | Cherry Park Speedway, Avon, CT | ARDC Midget | George Rice |
| June 28, 1948 | | Manchester Motordrome, Londonberry, NH | Midget | Rex Records |
| June 28, 1948 | | Norwood Arena Speedway, Norwood, MA | Midget | Bill Schindler |
| June 28, 1948 | | Candlelight Stadium, Bridgeport, CT | ARDC Midget | George Flemke |
| June 29, 1948 | Giro Dell'Umbria | Giro Dell'Umbria, Umbria, Italy | Sports Car | Inico Bernabei |
| June 29, 1948 | | Freeport Speedway, Freeport, NY | ARDC Midget | Tony Bonadies |
| June 29, 1948 | | Rhinebeck Speedway, Rhinebeck, NY | ARDC Midget | Bob Disbrow |
| June 29, 1948 | | Westboro Speedway, Westborough, MA | Midget | Jimmy Florian |
| June 29, 1948 | | Hinchliffe Stadium, Paterson, NJ | Midget | Art Cross |
| June 29, 1948 | | Princess Anne Speedway, Norfolk, VA | Midget | George Fonder |
| June 29, 1948 | | Princess Anne Speedway, Norfolk, VA | Midget | Lloyd Christopher |
| June 30, 1948 | | Hudson Speedway, Hudson, NH | Midget | Jimmy Florian |
| June 30, 1948 | | Medford Bowl, Medford, MA | Midget | Johnny Thomson |
| June 30, 1948 | | Empire Raceway, Menands, NY | ARDC Midget | Mike Nazaruk |
| July 1, 1948 | | Yellow Jacket Speedway, Philadelphia, PA | Midget | Lloyd Christopher |
| July 1, 1948 | | Orange County Fair Speedway, Middletown, NY | ARDC Midget | Mike Nazaruk |
| July 1, 1948 | | West Haven Speedway, West Haven, CT | ARDC Midget | Bill Schindler |
| July 2, 1948 | | Freeport Speedway, Freeport, NY | ARDC Midget | Steve McGrath |
| July 2, 1948 | | Stafford Motor Speedway, Stafford Springs, CT | ARDC Midget | Johnny Rice |
| July 2, 1948 | | Mohawk Midget Stadium, Lunenburg, MA | Midget | Jimmy Florian |
| July 2, 1948 | | Hinchliffe Stadium, Paterson, NJ | Midget | Al Keller |
| July 3, 1948 | | Thompson International Speedway, Thompson, CT | Midget | Chet Gibbons |
| July 3, 1948 | | Danbury Fairgrounds, Danbury, CT | ARDC Midget | Mike Nazaruk |
| July 4, 1948 | 8e Grand Prix de Suisse | Bremgarten, Berne, Switzerland | FIA Formula One | Carlo Felice Trossi |
| July 4, 1948 | 5e Prix de Berne | Bremgarten, Berne, Switzerland | FIA Formula 2 voiturette | Piero Taruffi |
| July 4, 1948 | | Martinsville Speedway, Martinsville, VA | NASCAR Modified | Fonty Flock |
| July 4, 1948 | | Cherry Park Speedway, Avon, CT | ARDC Midget | Bill Schindler |
| July 5, 1948 | | Forsyth County Fairgrounds, Winston-Salem, NC | stock car | Curtis Turner |
| July 6, 1948 | | Freeport Speedway, Freeport, NY | ARDC Midget | Ted Tappett |
| July 6, 1948 | | Hinchliffe Stadium, Paterson, NJ | Midget | Mike Nazaruk |
| July 7, 1948 | | Hudson Speedway, Hudson, NH | Midget | Dick Shuebruk |
| July 8, 1948 | | Riverside Park Speedway, Agawam, MA | Midget | Bill Randall |
| July 8, 1948 | | Yellow Jacket Speedway, Philadelphia, PA | Midget | Jim DiMarco |
| July 8, 1948 | | Orange County Fair Speedway, Middletown, NY | ARDC Midget | Johnny Zeke |
| July 8, 1948 | | West Haven Speedway, West Haven, CT | ARDC Midget | Ted Tappett |
| July 9, 1948 | | Freeport Speedway, Freeport, NY | ARDC Midget | Ted Tappett |
| July 9, 1948 | | Stafford Motor Speedway, Stafford Springs, CT | ARDC Midget | George Flemke |
| July 9, 1948 | | Mohawk Midget Stadium, Lunenburg, MA | Midget | Lloyd Christopher |
| July 9, 1948 | | Seekonk Speedway, Seekonk, MA | Midget | Tony Bonadies |
| July 9, 1948 | | Hinchliffe Stadium, Paterson, NJ | Midget | Mike Nazaruk |
| July 9, 1948 | | Lanham Speedway, Lanham, MD | ARDC Midget | Shorty McAndrews |
| July 10, 1948 | | Islip Speedway, Islip, NY | ARDC Midget | Joe Barzda |
| July 10, 1948 | | Thompson International Speedway, Thompson, CT | Midget | Joe Ross |
| July 10, 1948 | | Dorney Park Speedway, Allentown, PA | Midget | Walt Fair |
| July 10, 1948 | | Danbury Fairgrounds, Danbury, CT | ARDC Midget | Bob Disbrow |
| July 11, 1948 | | Williams Grove Speedway, Mechanicsburg, PA | AAA Sprint Car (Eastern) | Ted Horn |
| July 11, 1948 | 3e Circuit des Remparts | Circuit des Remparts, Angoulême, France | FIA Formula 2 | Igor Troubetskoy |
| July 11, 1948 | | Charlotte Speedway, Charlotte, NC | NASCAR Modified | Red Byron |
| July 11, 1948 | 24 Heures de Spa | Circuit National de Spa-Francorchamps, Francorchamps, Belgium | Sports Car | Leslie Johnson
John Horsfall |
| July 11, 1948 | | Cherry Park Speedway, Avon, CT | ARDC Midget | Steve McGrath |
| July 11, 1948 | | Lonsdale Sports Arena, Lonsdale, RI | Midget | Bill Schindler |
| July 12, 1948 | | Dracut Speedway, Dracut, MA | Midget | Dick Shuebruk |
| July 12, 1948 | | Norwood Arena Speedway, Norwood, MA | Midget | Bill Schindler |
| July 12, 1948 | | Yellow Jacket Speedway, Philadelphia, PA | Midget | Al Keller |
| July 12, 1948 | | Candlelight Stadium, Bridgeport, CT | ARDC Midget | Steve McGrath |
| July 14, 1948 | | Hudson Speedway, Hudson, NH | Midget | Mike Nazaruk |
| July 14, 1948 | | Empire Raceway, Menands, NY | ARDC Midget | Al Keller |
| July 14, 1948 | | Orange County Fair Speedway, Middletown, NY | ARDC Midget | Steve McGrath |
| July 15, 1948 | | Riverside Park Speedway, Agawam, MA | Midget | Bill Randall |
| July 15, 1948 | | Yellow Jacket Speedway, Philadelphia, PA | Midget | Hawley Kight |
| July 15, 1948 | | West Haven Speedway, West Haven, CT | ARDC Midget | Ted Tappett |
| July 16, 1948 | | Freeport Speedway, Freeport, NY | ARDC Midget | Henry Renard |
| July 16, 1948 | | Stafford Motor Speedway, Stafford Springs, CT | ARDC Midget | Steve McGrath |
| July 16, 1948 | | Seekonk Speedway, Seekonk, MA | Midget | Chet Gibbons |
| July 16, 1948 | | Hinchliffe Stadium, Paterson, NJ | Midget | Al Keller |
| July 17, 1948 | | West Springfield Speedway, West Springfield, MA | Midget | Bill Schindler |
| July 17, 1948 | | Thompson International Speedway, Thompson, CT | Midget | Chet Gibbons |
| July 17, 1948 | | Danbury Fairgrounds, Danbury, CT | ARDC Midget | Bob Disbrow |
| July 18, 1948 | | Milwaukee Mile, West Allis, WI | AAA Sprint Car (Midwest) | Tony Bettenhausen |
| July 18, 1948 | | Charlotte Speedway, Charlotte, NC | AAA Sprint Car (Eastern) | Ted Horn |
| July 18, 1948 | 35e Grand Prix de l'A.C.F. | Circuit de Reims-Gueux, Reims, France | FIA Formula One | Jean-Pierre Wimille |
| July 18, 1948 | 2e Coupe des Petites Cylindrées | Circuit de Reims-Gueux, Reims, France | FIA Formula 2 | Raymond Sommer |
| July 18, 1948 | | North Wilkesboro Speedway, North Wilkesboro, NC | NASCAR Modified | Curtis Turner |
| July 18, 1948 | | Lonsdale Sports Arena, Lonsdale, RI | Midget | Bill Randall |
| July 19, 1948 | | Dracut Speedway, Dracut, MA | Midget | Red Cummings |
| July 19, 1948 | | Yellow Jacket Speedway, Philadelphia, PA | Midget | Dutch Schaefer |
| July 19, 1948 | | Candlelight Stadium, Bridgeport, CT | ARDC Midget | Johnny Zeke |
| July 20, 1948 | | Freeport Speedway, Freeport, NY | ARDC Midget | Ted Tappett |
| July 20, 1948 | | Westboro Speedway, Westborough, MA | Midget | Bill Schindler |
| July 20, 1948 | | Hinchliffe Stadium, Paterson, NJ | Midget | George Rice |
| July 21, 1948 | | Hudson Speedway, Hudson, NH | Midget | Bill Randall |
| July 21, 1948 | | Medford Bowl, Medford, MA | Midget | Johnny Thomson |
| July 22, 1948 | | Riverside Park Speedway, Agawam, MA | Midget | Dick Shuebruk |
| July 22, 1948 | | West Haven Speedway, West Haven, CT | ARDC Midget | Bill Schindler |
| July 24, 1948 | | Islip Speedway, Islip, NY | ARDC Midget | Buddy Chase |
| July 24, 1948 | | West Springfield Speedway, West Springfield, MA | Midget | George Rice |
| July 24, 1948 | | Thompson International Speedway, Thompson, CT | Midget | Johnny Bernardi |
| July 24, 1948 | | Dorney Park Speedway, Allentown, PA | Midget | Mike Josephs |
| July 24, 1948 | | Danbury Fairgrounds, Danbury, CT | ARDC Midget | Steve McGrath |
| July 25, 1948 | | Winchester Speedway, Winchester, IN | AAA Sprint Car (Midwest) | Ted Horn |
| July 25, 1948 | | Greensboro Fairgrounds, Greensboro, NC | NASCAR Modified | Curtis Turner |
| July 25, 1948 | | Columbus Speedway, Columbus, GA | NASCAR Modified | Billy Carden |
| July 25, 1948 | | Selinsgrove Speedway, Selinsgrove, PA | AAA Sprint Car (Eastern) | Tommy Hinnershitz |
| July 25, 1948 | | Cherry Park Speedway, Avon, CT | ARDC Midget | Bill Schindler |
| July 25, 1948 | | Lonsdale Sports Arena, Lonsdale, RI | Midget | Andy Ellis |
| July 26, 1948 | | Norwood Arena Speedway, Norwood, MA | Midget | Johnny Thomson |
| July 26, 1948 | | Yellow Jacket Speedway, Philadelphia, PA | Midget | Charlie Miller |
| July 26, 1948 | | Candlelight Stadium, Bridgeport, CT | ARDC Midget | Steve McGrath |
| July 27, 1948 | | Rhinebeck Speedway, Rhinebeck, NY | ARDC Midget | Ray Nestor |
| July 27, 1948 | | Westboro Speedway, Westborough, MA | Midget | Johnny Bernardi |
| July 27, 1948 | | Hinchliffe Stadium, Paterson, NJ | Midget | Rex Records |
| July 28, 1948 | | Islip Speedway, Islip, NY | ARDC Midget | Tony Martino |
| July 28, 1948 | | Islip Speedway, Islip, NY | ARDC Midget | Steve McGrath |
| July 28, 1948 | | Hudson Speedway, Hudson, NH | Midget | Bill Randall |
| July 28, 1948 | | Medford Bowl, Medford, MA | Midget | Johnny Thomson |
| July 28, 1948 | | Empire Raceway, Menands, NY | ARDC Midget | Art Cross |
| July 28, 1948 | | Orange County Fair Speedway, Middletown, NY | ARDC Midget | Mike Nazaruk |
| July 28, 1948 | | Southside Speedway, Midlothian, VA | ARDC Midget | Ted Tappett |
| July 29, 1948 | | Riverside Park Speedway, Agawam, MA | Midget | Johnny Bernardi |
| July 29, 1948 | | Yellow Jacket Speedway, Philadelphia, PA | Midget | Lloyd Christopher |
| July 29, 1948 | | West Haven Speedway, West Haven, CT | ARDC Midget | Steve McGrath |
| July 30, 1948 | | Freeport Speedway, Freeport, NY | ARDC Midget | Ted Tappett |
| July 30, 1948 | | Stafford Motor Speedway, Stafford Springs, CT | ARDC Midget | George Flemke |
| July 30, 1948 | | Seekonk Speedway, Seekonk, MA | Midget | Johnny Thomson |
| July 30, 1948 | | Hinchliffe Stadium, Paterson, NJ | Midget | Bill Schindler |
| July 30, 1948 | | Lanham Speedway, Lanham, MD | ARDC Midget | George Fonder |
| July 31, 1948 | | Delaware State Fairgrounds, Harrington, DE | AAA Sprint Car (Eastern) | Ted Horn |
| July 31, 1948 | | West Springfield Speedway, West Springfield, MA | Midget | Mike Nazaruk |
| July 31, 1948 | | Thompson International Speedway, Thompson, CT | Midget | Chet Gibbons |
| July 31, 1948 | | Danbury Fairgrounds, Danbury, CT | ARDC Midget | Tony Bonadies |
| August 1, 1948 | 14e Grand Prix du Comminges | Les Rues de St.-Gaudens, Saint-Gaudens, France | FIA Formula One | Luigi Villoresi |
| August 1, 1948 | | Lakeview Speedway, Lexington, NC | NASCAR Modified | Curtis Turner |
| August 1, 1948 | | Cherry Park Speedway, Avon, CT | ARDC Midget | Bill Schindler |
| August 1, 1948 | | Lonsdale Sports Arena, Lonsdale, RI | Midget | Johnny Thomson |
| August 2, 1948 | | Norwood Arena Speedway, Norwood, MA | Midget | Bill Schindler |
| August 2, 1948 | | Yellow Jacket Speedway, Philadelphia, PA | Midget | Andy Furci |
| August 2, 1948 | | Candlelight Stadium, Bridgeport, CT | ARDC Midget | Ted Tappett |
| August 3, 1948 | | Rhinebeck Speedway, Rhinebeck, NY | ARDC Midget | Steve McGrath |
| August 3, 1948 | | Westboro Speedway, Westborough, MA | Midget | Johnny Thomson |
| August 4, 1948 | | Medford Bowl, Medford, MA | Midget | Bill Randall |
| August 4, 1948 | | Empire Raceway, Menands, NY | ARDC Midget | Al Keller |
| August 4, 1948 | | Orange County Fair Speedway, Middletown, NY | ARDC Midget | Bill Schindler |
| August 6, 1948 | | Freeport Speedway, Freeport, NY | ARDC Midget | Henry Renard |
| August 6, 1948 | | Stafford Motor Speedway, Stafford Springs, CT | ARDC Midget | Steve McGrath |
| August 6, 1948 | | Seekonk Speedway, Seekonk, MA | Midget | Red Cummings |
| August 6, 1948 | | Hinchliffe Stadium, Paterson, NJ | Midget | Bob Disbrow |
| August 6, 1948 | | Lanham Speedway, Lanham, MD | ARDC Midget | Len Duncan |
| August 7, 1948 | 1e Grand Prix Zandvoort | Circuit Park Zandvoort, Zandvoort, Netherlands | FIA Formula One | Birabongse Bhanudej Bhanubandh |
| August 7, 1948 | | Islip Speedway, Islip, NY | ARDC Midget | Ray Nestor |
| August 7, 1948 | | West Springfield Speedway, West Springfield, MA | Midget | Bill Schindler |
| August 7, 1948 | | Thompson International Speedway, Thompson, CT | Midget | Chet Gibbons |
| August 7, 1948 | | Dorney Park Speedway, Allentown, PA | Midget | Rex Records |
| August 7, 1948 | | Danbury Fairgrounds, Danbury, CT | ARDC Midget | Bill Baker |
| August 8, 1948 | Buck Mathis Memorial | Daytona Beach Road Course, Daytona Beach, FL | NASCAR Modified | Fonty Flock |
| August 8, 1948 | | Fort Wayne Speedway, Fort Wayne, IN | AAA Sprint Car (Midwest) | Spider Webb |
| August 8, 1948 | | Martinsville Speedway, Martinsville, VA | AAA Sprint Car | Ted Horn |
| August 8, 1948 | | Cherry Park Speedway, Avon, CT | ARDC Midget | Bill Schindler |
| August 8, 1948 | | Lonsdale Sports Arena, Lonsdale, RI | Midget | Ted Tappett |
| August 9, 1948 | | Norwood Arena Speedway, Norwood, MA | Midget | Frankie Simonetti |
| August 9, 1948 | | Yellow Jacket Speedway, Philadelphia, PA | Midget | Tony Bonadies |
| August 9, 1948 | | Candlelight Stadium, Bridgeport, CT | ARDC Midget | Mike Nazaruk |
| August 10, 1948 | | Milwaukee Mile, West Allis, WI | AAA Sprint Car (Midwest) | Rex Mays |
| August 10, 1948 | | Freeport Speedway, Freeport, NY | ARDC Midget | Johnny Zeke |
| August 10, 1948 | | Westboro Speedway, Westborough, MA | Midget | Frankie Simonetti |
| August 10, 1948 | | Hinchliffe Stadium, Paterson, NJ | Midget | Bill Schindler |
| August 11, 1948 | | Milwaukee Mile, West Allis, WI | AAA Sprint Car (Midwest) | Tommy Mattson |
| August 11, 1948 | 2o Coppa Internazionale delle Dolomiti | Coppa delle Dolomiti, Cortina, Italy | Sports Car | Giovanni Bracco |
| August 11, 1948 | | Southside Speedway, Midlothian, VA | ARDC Midget | Len Duncan |
| August 13, 1948 | | Freeport Speedway, Freeport, NY | ARDC Midget | Harold Bickelhaupt |
| August 13, 1948 | | Mohawk Midget Stadium, Lunenburg, MA | Midget | Dick Shuebruk |
| August 13, 1948 | | Hinchliffe Stadium, Paterson, NJ | Midget | Dutch Schaefer |
| August 13, 1948 | | Lanham Speedway, Lanham, MD | ARDC Midgt | Charlie Miller |
| August 14, 1948 | | Islip Speedway, Islip, NY | ARDC Midget | Johnny Zeke |
| August 14, 1948 | | West Springfield Speedway, West Springfield, MA | Midget | Mike Nazaruk |
| August 14, 1948 | | Danbury Fairgrounds, Danbury, CT | ARDC Midget | Len Fanelli |
| August 15, 1948 | | Milwaukee Mile, West Allis, WI | AAA Indy Car | Johnny Mantz |
| August 15, 1948 | | Langhorne Speedway, Langhorne, PA | NASCAR Modified | Al Keller |
| August 15, 1948 | Circuito di Pescara | Circuito di Pescara, Pescara, Italy | Sports Car | Alberto Ascari
Giovanni Bracco |
| August 15, 1948 | | Wausau Fairgrounds, Wausau, WI | IMCA Sprint Car | Deb Snyder |
| August 15, 1948 | | Cherry Park Speedway, Avon, CT | ARDC Midget | Dutch Schaefer |
| August 15, 1948 | | Hudson Speedway, Hudson, NH | Midget | Stan Woods |
| August 15, 1948 | | Thompson International Speedway, Thompson, CT | Midget | Len Fanelli |
| August 16, 1948 | | Norwood Arena Speedway, Norwood, MA | Midget | Frankie Simonetti |
| August 16, 1948 | | Yellow Jacket Speedway, Philadelphia, PA | Midget | Jim DiMarco |
| August 17, 1948 | | Freeport Speedway, Freeport, NY | ARDC Midget | Red Marlowe |
| August 17, 1948 | | Rhinebeck Speedway, Rhinebeck, NY | ARDC Midget | Stan Disbrow |
| August 17, 1948 | | Hinchliffe Stadium, Paterson, NJ | Midget | Al Keller |
| August 18, 1948 | | Islip Speedway, Islip, NY | ARDC Midget | Lloyd Christopher |
| August 18, 1948 | | Lonsdale Sports Arena, Lonsdale, RI | Midget | Johnny Thomson |
| August 18, 1948 | | Medford Bowl, Medford, MA | Midget | Joe Ross |
| August 18, 1948 | | Empire Raceway, Menands, NY | ARDC Midget | Al Keller |
| August 18, 1948 | | Empire Raceway, Menands, NY | ARDC Midget | Mike Nazaruk |
| August 19, 1948 | | Riverside Park Speedway, Agawam, MA | Midget | Bob Disbrow |
| August 20, 1948 | | Stafford Motor Speedway, Stafford Springs, CT | ARDC Midget | George Rice |
| August 20, 1948 | | Seekonk Speedway, Seekonk, MA | Midget | Bill Schindler |
| August 21, 1948 | | Illinois State Fairgrounds, Springfield, IL | AAA Indy Car | Ted Horn |
| August 21, 1948 | | West Springfield Speedway, West Springfield, MA | Midget | Mike Nazaruk |
| August 21, 1948 | | Thompson International Speedway, Thompson, CT | Midget | Joe Ross |
| August 21, 1948 | | Danbury Fairgrounds, Danbury, CT | ARDC Midget | Stan Disbrow |
| August 22, 1948 | | Milwaukee Mile, West Allis, WI | Stock Car | Paul Bjork |
| August 22, 1948 | | Dayton Speedway, Dayton, OH | AAA Sprint Car (Midwest) | Ted Horn |
| August 22, 1948 | | Cherry Park Speedway, Avon, CT | ARDC Midget | Tony Bonadies |
| August 22, 1948 | | Hudson Speedway, Hudson, NH | Midget | Bob Foss |
| August 23, 1948 | | Candlelight Stadium, Bridgeport, CT | ARDC Midget | Buddy Chase |
| August 24, 1948 | | Freeport Speedway, Freeport, NY | ARDC Midget | Johnny Zeke |
| August 24, 1948 | | Rhinebeck Speedway, Rhinebeck, NY | ARDC Midget | Johnny Carpenter |
| August 24, 1948 | | Westboro Speedway, Westborough, MA | Midget | Charlie Ethier |
| August 25, 1948 | | Lonsdale Sports Arena, Lonsdale, RI | Midget | Bill Randall |
| August 25, 1948 | | Medford Bowl, Medford, MA | Midget | Bob Foss |
| August 25, 1948 | | Orange County Fair Speedway, Middletown, NY | ARDC Midget | Tony Bonadies |
| August 26, 1948 | | Riverside Park Speedway, Agawam, MA | Midget | John Ross |
| August 26, 1948 | | West Haven Speedway, West Haven, CT | ARDC Midget | Bill Schindler |
| August 27, 1948 | | Freeport Speedway, Freeport, NY | ARDC Midget | Steve McGrath |
| August 27, 1948 | | Stafford Motor Speedway, Stafford Springs, CT | ARDC Midget | Johnny Rice |
| August 27, 1948 | | Seekonk Speedway, Seekonk, MA | Midget | Johnny Bernardi |
| August 27, 1948 | | Hinchliffe Stadium, Paterson, NJ | Midget | Bill Schindler |
| August 28, 1948 | | West Springfield Speedway, West Springfield, MA | Midget | Bill Schindler |
| August 28, 1948 | | Danbury Fairgrounds, Danbury, CT | ARDC Midget | Steve McGrath |
| August 29, 1948 | | Milwaukee Mile, West Allis, WI | AAA Indy Car | Tony Bettenhausen
Myron Fohr |
| August 29, 1948 | 10e Grand Prix de l'Albigeois | Circuit des Planques, Albi, France | FIA Formula One | Luigi Villoresi |
| August 29, 1948 | | Cherry Park Speedway, Avon, CT | ARDC Midget | Lloyd Christopher |
| August 29, 1948 | | Hudson Speedway, Hudson, NH | Midget | Johnny Black |
| August 29, 1948 | | Dorney Park Speedway, Allentown, PA | Midget | Tony Bonadies |
| August 30, 1948 | | Yellow Jacket Speedway, Philadelphia, PA | Midget | Lloyd Christopher |
| August 30, 1948 | | Candlelight Stadium, Bridgeport, CT | ARDC Midget | Buddy Chase |
| August 31, 1948 | | Freeport Speedway, Freeport, NY | ARDC Midget | Tony Bonadies |
| August 31, 1948 | | Rhinebeck Speedway, Rhinebeck, NY | ARDC Midget | Johnny Rice |
| August 31, 1948 | | Westboro Speedway, Westborough, MA | Midget | Johnny Thomson |
| August 31, 1948 | | Hinchliffe Stadium, Paterson, NJ | Midget | Len Fanelli |
| September 1, 1948 | | Islip Speedway, Islip, NY | ARDC Midget | Art Cross |
| September 1, 1948 | | Lonsdale Sports Arena, Lonsdale, RI | Midget | Johnny Thomson |
| September 1, 1948 | | Medford Bowl, Medford, MA | Midget | Johnny Black |
| September 1, 1948 | | Orange County Fair Speedway, Middletown, NY | ARDC Midget | Larry Bloomer |
| September 2, 1948 | | Riverside Park Speedway, Agawam, MA | Midget | Len Fanelli |
| September 2, 1948 | | Yellow Jacket Speedway, Philadelphia, PA | Midget | Tony Bonadies |
| September 2, 1948 | | West Haven Speedway, West Haven, CT | ARDC Midget | Bill Schindler |
| September 3, 1948 | | Freeport Speedway, Freeport, NY | ARDC Midget | Tony Bonadies |
| September 3, 1948 | | Stafford Motor Speedway, Stafford Springs, CT | ARDC Midget | Johnny Rice |
| September 3, 1948 | | Dracut Speedway, Dracut, MA | Midget | Joe Ross |
| September 3, 1948 | | Seekonk Speedway, Seekonk, MA | Midget | Stan Woods |
| September 3, 1948 | | Hinchliffe Stadium, Paterson, NJ | Midget | Don Morris |
| September 3, 1948 | | Lanham Speedway, Lanham, MD | ARDC Midget | Mike Josephs |
| September 4, 1948 | | DuQuoin State Fairgrounds, DuQuoin, IL | AAA Indy Car | Lee Wallard |
| September 4, 1948 | Coppa Michelin | Parco Valentino, Torino, Italy | Sports Car | Giorgio Giusti |
| September 4, 1948 | | Islip Speedway, Islip, NY | ARDC Midget | Art Cross |
| September 4, 1948 | | West Springfield Speedway, West Springfield, MA | Midget | George Rice |
| September 4, 1948 | | Dorney Park Speedway, Allentown, PA | Midget | Len Duncan |
| September 4, 1948 | | Danbury Fairgrounds, Danbury, CT | ARDC Midget | Steve McGrath |
| September 5, 1948 | 18o Gran Premio d'Italia | Parco Valentino, Torino, Italy | FIA Formula One | Jean-Pierre Wimille |
| September 5, 1948 | | North Wilkesboro Speedway, North Wilkesboro, NC | NASCAR Modified | Curtis Turner |
| September 5, 1948 | | North Wilkesboro Speedway, North Wilkesboro, NC | NASCAR Modified | Curtis Turner |
| September 5, 1948 | | Columbus Speedway, Columbus, GA | NASCAR Modified | Gober Sosebee |
| September 5, 1948 | | Cherry Park Speedway, Avon, CT | ARDC Midget | Dutch Schaefer |
| September 5, 1948 | | Cherry Park Speedway, Avon, CT | ARDC Midget | Dutch Schaefer |
| September 5, 1948 | | Hudson Speedway, Hudson, NH | Midget | Johnny Black |
| September 5, 1948 | | Manchester Motordrome, Londonberry, NH | Midget | Jimmy Florian |
| September 5, 1948 | | Orange County Fair Speedway, Middletown, NY | ARDC Midget | Bill Schindler |
| September 6, 1948 | 26th Pikes Peak Hill Climb | Pikes Peak, Cascade, CO | AAA Indy Car | Al Rogers |
| September 6, 1948 | | Lakewood Speedway, Atlanta, GA | AAA Indy Car | Mel Hansen |
| September 6, 1948 | | Freeport Speedway, Freeport, NY | ARDC Midget | Ted Tappett |
| September 6, 1948 | | Dracut Speedway, Dracut, MA | Midget | Joe Ross |
| September 6, 1948 | | Norwood Arena Speedway, Norwood, MA | Midget | Johnny Bernardi |
| September 6, 1948 | | Yellow Jacket Speedway, Philadelphia, PA | Midget | Mike Josephs |
| September 6, 1948 | | Dorney Park Speedway, Allentown, PA | Midget | Mike Josephs |
| September 6, 1948 | | Candlelight Stadium, Bridgeport, CT | ARDC Midget | Henry Renard |
| September 7, 1948 | | Freeport Speedway, Freeport, NY | ARDC Midget | Johnny Zeke |
| September 7, 1948 | | Rhinebeck Speedway, Rhinebeck, NY | ARDC Midget | Dutch Schaefer |
| September 7, 1948 | | Westboro Speedway, Westborough, MA | Midget | Johnny Thomson |
| September 7, 1948 | | Hinchliffe Stadium, Paterson, NJ | Midget | Bill Schindler |
| September 7, 1948 | | Princess Anne Speedway, Norfolk, VA | Midget | Charlie Miller |
| September 8, 1948 | | Lonsdale Sports Arena, Lonsdale, RI | Midget | Stan Woods |
| September 8, 1948 | | Empire Raceway, Menands, NY | ARDC Midget | Henry Renard |
| September 8, 1948 | | Orange County Fair Speedway, Middletown, NY | ARDC Midget | Dutch Schaefer |
| September 8, 1948 | | Southside Speedway, Midlothian, VA | ARDC Midget | Johnny Ritter |
| September 9, 1948 | | West Haven Speedway, West Haven, CT | ARDC Midget | Ted Tappett |
| September 10, 1948 | | Hamburg Fairgrounds, Hamburg, NY | AAA Sprint Car (Eastern) | Ted Horn |
| September 11, 1948 | | Islip Speedway, Islip, NY | ARDC Midget | Dutch Schaefer |
| September 11, 1948 | | West Springfield Speedway, West Springfield, MA | Midget | Chet Conklin |
| September 11, 1948 | | Dorney Park Speedway, Allentown, PA | Midget | Mike Josephs |
| September 11, 1948 | | Danbury Fairgrounds, Danbury, CT | ARDC Midget | Henry Renard |
| September 12, 1948 | | Charlotte Speedway, Charlotte, NC | NASCAR Modified | Curtis Turner |
| September 12, 1948 | | Charlotte Speedway, Charlotte, NC | NASCAR Modified | Buddy Shuman |
| September 12, 1948 | 12 Heures de Paris | L'autodrome de Linas-Montlhéry, Montlhéry, France | Sports Car | Peter Mitchell-Thomson
Luigi Chinetti |
| September 12, 1948 | | Cherry Park Speedway, Avon, CT | ARDC Midget | Mike Nazaruk |
| September 12, 1948 | | Manchester Motordrome, Londonberry, NH | Midget | Johnny Thomson |
| September 13, 1948 | | Norwood Arena Speedway, Norwood, MA | Midget | Dick Shuebruk |
| September 13, 1948 | | Yellow Jacket Speedway, Philadelphia, PA | Midget | Len Duncan |
| September 13, 1948 | | Candlelight Stadium, Bridgeport, CT | ARDC Midget | George Rice |
| September 14, 1948 | | Freeport Speedway, Freeport, NY | ARDC Midget | Ted Tappett |
| September 14, 1948 | | Rhinebeck Speedway, Rhinebeck, NY | ARDC Midget | Larry Shurter |
| September 14, 1948 | | Westboro Speedway, Westborough, MA | Midget | Johnny Thomson |
| September 14, 1948 | | Hinchliffe Stadium, Paterson, NJ | Midget | Art Cross |
| September 14, 1948 | | Princess Anne Speedway, Norfolk, VA | Midget | Lloyd Christopher |
| September 15, 1948 | | Empire Raceway, Menands, NY | ARDC Midget | Henry Renard |
| September 15, 1948 | | Orange County Fair Speedway, Middletown, NY | ARDC Midget | Johnny Peterson |
| September 16, 1948 | | Riverside Park Speedway, Agawam, MA | Midget | Johnny Ritter |
| September 16, 1948 | | Yellow Jacket Speedway, Philadelphia, PA | Midget | Tony Bonadies |
| September 16, 1948 | Mid Summer Championship | Candlelight Stadium, Bridgeport, CT | ARDC Midget | Nick Fornoro |
| September 17, 1948 | | Freeport Speedway, Freeport, NY | ARDC Midget | Larry Bloomer |
| September 17, 1948 | | Stafford Motor Speedway, Stafford Springs, CT | ARDC Midget | Henry Renard |
| September 17, 1948 | | Seekonk Speedway, Seekonk, MA | Midget | Johnny Thomson |
| September 19, 1948 | | Illinois State Fairgrounds, Springfield, IL | AAA Indy Car | Myron Fohr |
| September 19, 1948 | 1o Gran Premio di Napoli | Posillipo Park, Napoli, Italy | FIA Formula 2 | Luigi Villoresi |
| September 19, 1948 | | Occoneechee Speedway, Hillsboro, NC | NASCAR Modified | Fonty Flock |
| September 19, 1948 | | Occoneechee Speedway, Hillsboro, NC | NASCAR Modified | Fonty Flock |
| September 19, 1948 | | Cherry Park Speedway, Avon, CT | ARDC Midget | George Rice |
| September 20, 1948 | | Candlelight Stadium, Bridgeport, CT | ARDC Midget | Steve McGrath |
| September 21, 1948 | | Freeport Speedway, Freeport, NY | ARDC Midget | Ted Tappett |
| September 21, 1948 | | Rhinebeck Speedway, Rhinebeck, NY | ARDC Midget | Dutch Schaefer |
| September 21, 1948 | | Westboro Speedway, Westborough, MA | Midget | Johnny Thomson |
| September 23, 1948 | | Riverside Park Speedway, Agawam, MA | Midget | Tom Cherry |
| September 23, 1948 | | West Haven Speedway, West Haven, CT | ARDC Midget | George Rice |
| September 24, 1948 | | Freeport Speedway, Freeport, NY | ARDC Midget | Harold Bickelhaupt |
| September 24, 1948 | | Stafford Motor Speedway, Stafford Springs, CT | ARDC Midget | George Rice |
| September 24, 1948 | | Seekonk Speedway, Seekonk, MA | Midget | Johnny Thomson |
| September 25, 1948 | | West Springfield Speedway, West Springfield, MA | Midget | Bill Schindler |
| September 25, 1948 | | Danbury Fairgrounds, Danbury, CT | ARDC Midget | Len Duncan |
| September 26, 1948 | 5o Circuito di Firenze | Parco delle Cascine, Firenze, Italy | FIA Formula 2 | Raymond Sommer |
| September 26, 1948 | | Lakeview Speedway, Lexington, NC | NASCAR Modified | Fonty Flock |
| September 26, 1948 | | Lakeview Speedway, Lexington, NC | NASCAR Modified | Gober Sosebee |
| September 26, 1948 | | Cherry Park Speedway, Avon, CT | ARDC Midget | Rex Records |
| September 26, 1948 | | Manchester Motordrome, Londonberry, NH | Midget | Stan Woods |
| September 27, 1948 | | Norwood Arena Speedway, Norwood, MA | Midget | Johnny Bernardi |
| September 27, 1948 | | Yellow Jacket Speedway, Philadelphia, PA | Midget | Russ Klar |
| September 27, 1948 | | Candlelight Stadium, Bridgeport, CT | ARDC Midget | Mike Nazaruk |
| September 28, 1948 | | Freeport Speedway, Freeport, NY | ARDC Midget | Ted Tappett |
| September 28, 1948 | | Rhinebeck Speedway, Rhinebeck, NY | ARDC Midget | Chet Conklin |
| September 28, 1948 | | Rhinebeck Speedway, Rhinebeck, NY | ARDC Midget | Chet Conklin |
| October 1, 1948 | | Freeport Speedway, Freeport, NY | ARDC Midget | Ted Tappett |
| October 1, 1948 | | Stafford Motor Speedway, Stafford Springs, CT | ARDC Midget | Johnny Rice |
| October 1, 1948 | | Seekonk Speedway, Seekonk, MA | Midget | Johnny Bernardi |
| October 2, 1948 | 1st British Grand Prix | Silverstone Circuit, Towcester, Hamptonshire, England | FIA Formula One | Luigi Villoresi |
| October 2, 1948 | | Watkins Glen International, Watkins Glen, NY | SCCA Formula Libre | Frank Griswold |
| October 2, 1948 | Watkins Glen Grand Prix | Watkins Glen International, Watkins Glen, NY | SCCA Formula Libre | Frank Griswold |
| October 2, 1948 | Springfield Classic | West Springfield Speedway, West Springfield, MA | Midget | Bill Schindler |
| October 2, 1948 | Springfield Classic | West Springfield Speedway, West Springfield, MA | Midget | Bill Schindler |
| October 2, 1948 | | Thompson International Speedway, Thompson, CT | Midget | Lloyd Christopher |
| October 2, 1948 | | Danbury Fairgrounds, Danbury, CT | ARDC Midget | Bob Disbrow |
| October 3, 1948 | | Elkin Speedway, Elkin, NC | NASCAR Modified | Buddy Shuman |
| October 3, 1948 | | Elkin Speedway, Elkin, NC | NASCAR Modified | Curtis Turner |
| October 3, 1948 | | Central City Speedway, Macon, GA | NASCAR Modified | Billy Carden |
| October 3, 1948 | | Central City Speedway, Macon, GA | NASCAR Modified | Red Byron |
| October 3, 1948 | | Empire Raceway, Menands, NY | ARDC Midget | Bob Disbrow |
| October 4, 1948 | | Candlelight Stadium, Bridgeport, CT | ARDC Midget | Bill Schindler |
| October 7, 1948 | Connecticut Classic | West Haven Speedway, West Haven, CT | ARDC Midget | Johnny Rice |
| October 9, 1948 | | West Springfield Speedway, West Springfield, MA | Midget | Ted Tappett |
| October 10, 1948 | | DuQuoin State Fairgrounds, DuQuoin, IL | AAA Indy Car | Johnnie Parsons |
| October 10, 1948 | 4e Grand Prix du Salon | L'autodrome de Linas-Montlhéry, Montlhéry, France | FIA Formula One | Louis Rosier |
| October 10, 1948 | | Greensboro Fairgrounds, Greensboro, NC | NASCAR Modified | Fonty Flock |
| October 10, 1948 | Coupes du Salon de l'Auto | L'autodrome de Linas-Montlhéry, Montlhéry, France | Sports Car | Henri Louveau |
| October 10, 1948 | | Cherry Park Speedway, Avon, CT | ARDC Midget | Bill Schindler |
| October 12, 1948 | | Norwood Arena Speedway, Norwood, MA | Midget | Frankie Simonetti |
| October 12, 1948 | | Westboro Speedway, Westborough, MA | Midget | Chet Gibbons |
| October 15, 1948 | | Freeport Speedway, Freeport, NY | ARDC Midget | Tony Bonadies |
| October 15, 1948 | | Freeport Speedway, Freeport, NY | ARDC Midget | Art Cross |
| October 16, 1948 | | Greensboro Fairgrounds, Greensboro, NC | NASCAR Modified | Fonty Flock |
| October 17, 1948 | 1o Gran Premio di Autodromo | Autodromo Nazionale di Monza, Monza, Italy | FIA Formula One | Jean-Pierre Wimille |
| October 17, 1948 | | North Wilkesboro Speedway, North Wilkesboro, NC | NASCAR Modified | Red Byron |
| October 24, 1948 | | Circuito di Garda, Garda, Italy | FIA Formula One | Giuseppe Farina |
| October 24, 1948 | | Charlotte Speedway, Charlotte, NC | NASCAR Modified | Red Byron |
| October 24, 1948 | | Thompson International Speedway, Thompson, CT | ARDC Midget | Frankie Simonetti |
| October 31, 1948 | 9o Gran Premio de Penya Rhin | Pedralbes, Barcelona, Spain | FIA Formula One | Luigi Villoresi |
| October 31, 1948 | | Forsyth County Fairgrounds, Winston-Salem, NC | NASCAR Modified | Fonty Flock |
| November 11, 1948 | | Arizona State Fairgrounds, Phoenix, AZ | AAA Sprint Car (Pacific) | Rex Mays |
| November 14, 1948 | | Speedway Park, Jacksonville, FL | NASCAR Modified | Red Byron |
| November 21, 1948 | | Carrell Speedway, Gardena, CA | AAA Sprint Car (Pacific) | Johnny Mantz |
| November 21, 1948 | | Cherry Park Speedway, Avon, CT | ARDC Midget | Mike Nazaruk |
| December 4, 1948 | | Kingsbridge Armory, Bronx, NY | Midget | Charlie Ethier |
| December 11, 1948 | | Kingsbridge Armory, Bronx, NY | Midget | Art Cross |
| December 18, 1948 | | Kingsbridge Armory, Bronx, NY | Midget | Stan Disbrow |