| Fin | St | Driver | # | Owner | Car | Laps | Money | Status | Laps Led |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 1 | Ken Miles Lloyd Ruby | 98 | Shelby American Inc. | Ford Mk II 1015 | 678 | 15,500 | running | |
| 2 | 11 | Jerry Grant Dan Gurney | 97 | Shelby American Inc. | Ford Mk II 1012 | 670 | running | ||
| 3 | 3 | Mark Donohue Walt Hansgen | 95 | Holman & Moody | Ford Mk II 1031 | 669 | running | ||
| 4 | 4 | Pedro Rodríguez de la Vega Mario Andretti | 21 | North American Racing Team | Ferrari 365 P2 0838 | 664 | running | ||
| 5 | 7 | Chris Amon Bruce McLaren | 96 | Shelby American Inc. | Ford Mk II 1011 | 651 | running | ||
| 6 | 18 | Hans Herrmann Herbert Linge | 15 | Porsche System Engineering | Porsche 906 017 | 623 | running | ||
| 7 | 24 | Gerhard Mitter Joe Buzzetta | 16 | Porsche System Engineering | Porsche 904 GTS 005 | 612 | running | ||
| 8 | 26 | Günther Klass Udo Schütz | 17 | Porsche System Engineering | Porsche 904 GTS 091 | 610 | running | ||
| 9 | 14 | Jochen Rindt Bob Bondurant | 22 | North American Racing Team | Ferrari 250 LM 5893 | 591 | running | ||
| 10 | 28 | Peter Gregg George Drolsom | 14 | Brumos Porsche Florida | Porsche 904 GTS 068 | 589 | running | ||
| 11 | 22 | Sam Posey Jim Haynes Harry Theodoracopulos | 20 | Sam Posey | Porsche 904 GTS 014 | 577 | running | ||
| 12 | 21 | Dick Guldstrand Ben Moore George Wintersteen | 6 | Roger Penske | 1966 Chevrolet Corvette Stingray | 575 | running | ||
| 13 | 32 | Mark Konig Peter Clarke Bob Hurt | 23 | Peter Clarke | Ferrari 250 LM 5895 | 574 | running | ||
| 14 | 19 | Peter Sutcliffe Bob Grossman | 86 | Ford Advanced Vehicles | Ford GT40 GT/105 | 571 | running | ||
| 15 | 12 | David Piper Richard Attwood | 27 | David Piper | Ferrari 250 LM 5897 | 556 | running | ||
| 16 | 39 | Jack Ryan E. Linley Coleman Bill Bencker | 18 | John Ryan | 1966 Porsche 911 | 548 | running | ||
| 17 | 15 | Peter Revson Masten Gregory Ed Lowther | 92 | Essex Wire Corporation | Ford GT40 1010 | 531 | running | ||
| 18 | 34 | Don Kearney Michael Reina | 90 | Michael Reina | 1966 Ford Mustang | 527 | running | ||
| 19 | 33 | Larry B. Perkins Jack Slottag Russell Beazell | 30 | Jack Slottag | Ferrari 250 GTO 3223GT | 526 | running | ||
| 20 | 38 | George Cornelius Dick Boo Robert Ryan Brown | 67 | Cannon Auto | 1966 Chevrolet Corvette Stingray | 501 | running | ||
| 21 | 54 | Ike Maxwell Jr. Bill Martin | 56 | William J. Martin | 1964 Volvo P1800 | 496 | running | ||
| 22 | 45 | Hugh Kleinpeter Harry Fry George Parsons | 41 | E. P. Drescher | 1964 Triumph LM | 490 | running | ||
| 23 | 50 | Dana Kelder Ara Dube Red Wilson | 43 | Cannon Auto | 1966 Triumph TR4A | 487 | running | ||
| 24 | 43 | Herb Byrne Milo Vega | 45 | John Kingham | 1966 Triumph TR4A | 482 | running | ||
| 25 | 55 | Ben Scott Peter Flanagan Roger Chastain | 84 | Pompano Sports Cars | 1966 Alfa Romeo Giulia Sprint | 474 | running | ||
| 26 | 41 | Ray Stoutenberg Gene Jones Larry Isley | 54 | Raymond Stoutenburg | 1966 Plymouth Barracuda | 466 | running | ||
| 27 | 37 | Art Riley Russ MacGrotty | 75 | Russ MacGrotty | Yenko Stinger | 448 | running | ||
| 28 | 56 | George Waltman Arthur Swanson Nick Cone | 40 | Genser Forman | 1966 Triumph TR4 | 432 | running | ||
| 29 | 46 | John Bolander Bob Winkleman John Olson | 7 | John Olson | 1966 Ford Cortina | 416 | running | ||
| 30 | 58 | Rosemary Smith Smokey Drolet | 78 | Autosport | 1966 Sunbeam Alpine | 416 | running | ||
| 31 | 51 | Fred Opert Bill McKemie Terry Petmecky | 73 | Fred Opert | 1964 Elva Courier Mk.IV | 391 | running | ||
| 32 | 57 | Donna Mae Mims Janet Guthrie Suzy Dietrich | 80 | Autosport | 1966 Sunbeam Alpine | 389 | running | ||
| 33 | 10 | Dick Thompson Skip Scott Peter Revson | 91 | Essex Wire Corporation | Ford GT40 1026 | 500 | brakes | ||
| 34 | 36 | Paul Richards Ray Cuomo | 79 | Autosport | 1966 Austin-Healey Sprite | 491 | running | ||
| 35 | 8 | George Follmer Don Wester Paul Hawkins | 32 | North American Racing Team | Ferrari 250 LM 5901 | 428 | generator | ||
| 36 | 49 | Walter Glenn Ernie Croucher Bill Eve | 44 | Kenneth G. Chambliss | 1965 MGB 1800 GT | 426 | connecting rod | ||
| 37 | 17 | Paul Hawkins Jackie Epstein | 29 | Jack Epstein | Ferrari 250 LM 6051 | 425 | gearbox | ||
| 38 | 35 | Ralph Noseda Grant Clark Bob Thorpe Harry Heuer | 94 | Ralph Noseda | Shelby Cobra | 419 | unknown | ||
| 39 | 47 | Al Weaver John Fraim Chet Freeman | 55 | J. Randall | 1965 Lotus Elan | 383 | did not finish | ||
| 40 | 23 | Harold Keck Oscar Koveleski Ed Lowther | 93 | Scuderia Bear | Shelby Cobra | 371 | drive shaft | ||
| 41 | 6 | Richie Ginther Ronnie Bucknum | 87 | Holman & Moody | Ford Mk II 1016 | 329 | gearbox | ||
| 42 | 25 | Dan Gerber Bob Johnson Peter Lerch | 89 | Dan Gerber | Shelby Cobra CSX2189 | 328 | overheating | ||
| 43 | 2 | Joakim Bonnier Phil Hill | 65 | Chaparral Cars Inc. | Chaparral 2D 001/Chevrolet | 318 | wheel | ||
| 44 | 44 | Wilbur Pickett Bill Bean | 36 | Cannon Auto | 1962 Alfa Romeo Giulia Zagato | 278 | withdrawn | ||
| 45 | 52 | Ken Hughes Fred Salo John Addison | 42 | John Addison | 1964 Triumph TR4 | 244 | rocker arm | ||
| 46 | 40 | Don Yenko John Forte Art Riley | 59 | Art Riley | Volvo P1800 3331 | 216 | unknown | ||
| 47 | 13 | John Fulp Bill Rutan Bruce Jennings | 31 | John Fulp | Ferrari 330 P 0810 | 193 | wheel bearing | ||
| 48 | 27 | William Wonder Herb Wetanson | 88 | Bill Wonder | Ford GT40 GT/103 | 178 | wheel | ||
| 49 | 5 | Lucien Bianchi Gerard Langlois von Ophem Jean Blaton | 25 | Écurie Francorchamps | Ferrari 365 P2 0828 | 171 | piston | ||
| 50 | 29 | Roger West Dick Macon | 99 | Joe Treadwell | 1966 Ford Mustang | 168 | unknown | ||
| 51 | 16 | Innes Ireland Mike Hailwood George Drummond | 24 | Drummond Racing Organisation | Ferrari 250 LM 6053 | 90 | gearbox | ||
| 52 | 42 | Duncan Forlong Leland Dieas Dave McClain | 19 | Dave McClain | Porsche 356B Super 90 | 80 | gearbox | ||
| 53 | 20 | Leon Dernier Jacky Ickx Jean Blaton | 26 | Écurie Francorchamps | Ferrari 250 LM 5843 | 80 | transmission | ||
| 54 | 59 | Larry Hess Tommy Hess | 74 | Larry Hess | 1966 Rambler Marlin | 80 | steering | ||
| 55 | 30 | David Lane Don Sesslar | 47 | David Lane | Porsche 904 GTS 051 | 74 | overheating | ||
| 56 | 48 | John Hill John Bentley | 77 | Space Science | 1965 Sunbeam Tiger | 71 | oil pressure | ||
| 57 | 53 | Spurgeon May Bobby Allison | 5 | Robert Harper | 1965 Chevrolet Corvair | 63 | fuel pipe | ||
| 58 | 9 | Denis Hulme Victor Wilson | 28 | H.G. White | Ferrari 250 LM 5907 | 53 | gearbox | ||
| 59 | 31 | Dave Hull Herb Byrne Bob Kingham | 12 | Jaguar of Florida | 1962 Jaguar XKE | 41 | unknown | ||
| 60 | 60 | Bill Clark H. Bryan Crow Anatoly Arutunoff | 85 | Anatoly Arutunoff | 1964 Alfa Romeo Giulia Sprint | 0 | head gasket |