May 27, 1956 | | Portland Speedway, Portland, OR | NASCAR Grand National/Pacific Coast | Herb Thomas |
June 24, 1956 | | Portland Speedway, Portland, OR | NASCAR Grand National/Pacific Coast | John Kieper |
August 26, 1956 | | Portland Speedway, Portland, OR | NASCAR Grand National/Pacific Coast | Royce Haggerty |
September 23, 1956 | | Portland Speedway, Portland, OR | NASCAR Grand National/Pacific Coast | Lloyd Dane |
April 28, 1957 | | Portland Speedway, Portland, OR | NASCAR Grand National/Pacific Coast | Art Watts |
May 26, 1957 | | Portland Speedway, Portland, OR | NASCAR Grand National/Pacific Coast | Eddie Pagan |
July 14, 1957 | | Portland Speedway, Portland, OR | NASCAR Grand National/Pacific Coast | Eddie Pagan |
May 29, 1960 | | Portland Speedway, Portland, OR | Sprint Car | Ernie Koch |
May 24, 1964 | | Portland Speedway, Portland, OR | NASCAR Pacific Coast Late Model | Bill Amick |
April 4, 1965 | | Portland Speedway, Portland, OR | NASCAR Pacific Coast Late Model | Bill Amick |
May 16, 1965 | | Portland Speedway, Portland, OR | NASCAR Pacific Coast Late Model | Bill Amick |
June 27, 1965 | | Portland Speedway, Portland, OR | NASCAR Pacific Coast Late Model | Bill Amick |
June 26, 1966 | | Portland Speedway, Portland, OR | NASCAR Pacific Coast Late Model | Kuzie Kuzmanich |
September 18, 1966 | | Portland Speedway, Portland, OR | NASCAR Pacific Coast Late Model | Ray Elder |
May 14, 1967 | | Portland Speedway, Portland, OR | NASCAR Pacific Coast Late Model | Scotty Cain |
June 30, 1968 | | Portland Speedway, Portland, OR | NASCAR Pacific Coast Late Model | Jack McCoy |
September 7, 1969 | | Portland Speedway, Portland, OR | NASCAR Pacific Coast Late Model | Scotty Cain |
July 11, 1971 | Rose City 100 | Portland Speedway, Portland, OR | NASCAR Winston West Series | Hershel McGriff |
June 25, 1972 | | Portland Speedway, Portland, OR | NASCAR Winston West Series | Hershel McGriff |
September 10, 1972 | | Portland Speedway, Portland, OR | NASCAR Winston West Series | Hershel McGriff |
July 1, 1973 | | Portland Speedway, Portland, OR | NASCAR Winston West Series | Hershel McGriff |
September 9, 1973 | | Portland Speedway, Portland, OR | NASCAR Winston West Series | Hershel McGriff |
July 7, 1974 | Pepsi 100 | Portland Speedway, Portland, OR | NASCAR Winston West Series | Jimmy Insolo |
September 8, 1974 | | Portland Speedway, Portland, OR | NASCAR Winston West Series | Jimmy Insolo |
July 4, 1975 | Coca Cola 100 | Portland Speedway, Portland, OR | NASCAR Winston West Series | Ernie Stierly |
September 7, 1975 | Coca Cola 150 | Portland Speedway, Portland, OR | NASCAR Winston West Series | Bill Schmitt |
July 4, 1976 | | Portland Speedway, Portland, OR | NASCAR Winston West Series | Ernie Stierly |
September 12, 1976 | | Portland Speedway, Portland, OR | NASCAR Winston West Series | Harry Jefferson |
July 4, 1977 | | Portland Speedway, Portland, OR | NASCAR Winston West Series | Chuck Bown |
September 11, 1977 | | Portland Speedway, Portland, OR | NASCAR Winston West Series | Art Roth |
July 4, 1978 | Coca Cola 100 | Portland Speedway, Portland, OR | NASCAR Winston West Series | Bill Schmitt |
July 4, 1979 | Kyte Coca-Cola 100 | Portland Speedway, Portland, OR | NASCAR Winston West Series | Roy Smith |
September 3, 1979 | Rose City 100 | Portland Speedway, Portland, OR | NASCAR Winston West Series | Ron Eaton |
August 10, 1980 | G.I. Joe's/Heidelberg Portland 200 | Portland Speedway, Portland, OR | NASCAR Winston West Series | Bobby Allison |
July 5, 1981 | G.I. Joe's Portland 150 | Portland Speedway, Portland, OR | NASCAR Winston West Series | Jim Robinson |
July 4, 1982 | | Portland Speedway, Portland, OR | NASCAR Winston West Series | Ron Eaton |
July 15, 1984 | Permatex 150 | Portland Speedway, Portland, OR | NASCAR Winston West Series | Derrike Cope |
June 15, 1985 | | Portland Speedway, Portland, OR | USAC Supermodified | Jan Sneva |
July 4, 1985 | G.I. Joe's/Valvoline 201 | Portland Speedway, Portland, OR | NASCAR Winston West Series | Jim Bown |
August 31, 1986 | | Portland Speedway, Portland, OR | USAC Supermodified | Jerry Proper |
August 2, 1987 | Mike's Auto Parts 200 | Portland Speedway, Portland, OR | NASCAR Winston West Series | Chad Little |
September 7, 1987 | Coors 150 | Portland Speedway, Portland, OR | NASCAR Northwest Series | Kirk Rogers |
July 10, 1988 | | Portland Speedway, Portland, OR | NASCAR Winston West Series | Derrike Cope |
July 4, 1989 | | Portland Speedway, Portland, OR | NASCAR Winston West Series | Bill Schmitt |
April 14, 1990 | Winston 125 | Portland Speedway, Portland, OR | NASCAR Northwest Series | John Dillon |
July 1, 1990 | | Portland Speedway, Portland, OR | NASCAR Winston West Series | Roy Smith |
June 30, 1991 | Winston 200 | Portland Speedway, Portland, OR | NASCAR Winston West Series | Mike Chase |
June 28, 1992 | Astro 200 | Portland Speedway, Portland, OR | NASCAR Winston West Series | Bill Sedgwick |
July 4, 1993 | Mello Yello 200 | Portland Speedway, Portland, OR | NASCAR Winston West Series | Ken Schrader |
July 31, 1993 | Valvoline 125 | Portland Speedway, Portland, OR | NASCAR Northwest Series | Dan Press |
September 25, 1993 | Valvoline 125 | Portland Speedway, Portland, OR | NASCAR Northwest Series | Tobey Butler |
July 3, 1994 | Talk 'n Toss 200 | Portland Speedway, Portland, OR | NASCAR Winston West Series | Rick Carelli |
August 19, 1994 | | Portland Speedway, Portland, OR | NASCAR SuperTruck | Rob MacCachren |
May 5, 1995 | Maxx Race Cards 200 | Portland Speedway, Portland, OR | NASCAR SuperTruck Series | Mike Skinner |
July 4, 1995 | Reser's Fine Foods 200 | Portland Speedway, Portland, OR | NASCAR Winston West Series | Ernie Cope |
September 17, 1995 | Plaid Pantry 250 | Portland Speedway, Portland, OR | NASCAR Winston West Series | Doug George |
May 4, 1996 | Craftsman 200 | Portland Speedway, Portland, OR | NASCAR Craftsman Truck Series | Ron Hornaday Jr. |
June 1, 1996 | Reser's Fine Foods 200 | Portland Speedway, Portland, OR | NASCAR Winston West Series | Lance Hooper |
May 3, 1997 | Craftsman 200 | Portland Speedway, Portland, OR | NASCAR Craftsman Truck Series | Rich Bickle |
July 11, 1997 | Pontiac Widetrack 200 | Portland Speedway, Portland, OR | NASCAR Winston West Series | Butch Gilliland |
April 25, 1998 | Craftsman 200 | Portland Speedway, Portland, OR | NASCAR Craftsman Truck Series | Stacy Compton |
July 10, 1998 | TCI Digital Cable 200 | Portland Speedway, Portland, OR | NASCAR Winston West Series | Gary Smith |
August 14, 1999 | Grainger Industrial Supply 200 | Portland Speedway, Portland, OR | NASCAR Winston West Series | Bill Sedgwick |
June 23, 2000 | | Portland Speedway, Portland, OR | SRL Supermodified | Lonnie Adamson |
July 4, 2000 | NAPA Auto Parts 200 | Portland Speedway, Portland, OR | NASCAR Winston West Series | Jeff Jefferson |