| Pos. | No. | Driver / Nationality | Car | Entrant | Laps | Time/retired | Grp Pos | Group | Grid | Qual Time |
|---|---|---|---|---|---|---|---|---|---|---|
| 1. | 0 | Ted Field (USA)
Danny Ongais (USA) Hurley Haywood (USA) |
Porsche 935/79 930 990 0029 | Interscope Racing | 684 | 24:00:24,870 | 1. | GTX | 8. | 1:54,072 |
| 2. | 65 | John Morton (USA)
Tony Adamowicz (USA) John Cannon (CDN)* |
Ferrari 365 GTB/4 16407 | Otto Zipper | 635 | 24:01:23,344 | 1. | GTO | 24. | 2:05,791 |
| 3. | 11 | Bruce Canepa (USA)
Rick Mears (USA) Monte Shelton (USA) Gregg Pickett (USA)* |
Porsche 935 009 00029 | Bruce Canepa | 627 | 2. | GTX | 19. | 2:00,386 | |
| 4. | 94 | Don Whittington (USA)
Bill Whittington (USA) Jürgen Barth (D) Preston Henn (USA)* |
Porsche 935/79 930 990 0026 | Whittington Brothers Racing | 622 | 3. | GTX | 6. | 1:49,397 | |
| 5. | 7 | Yoshimi Katayama (J)
Yojiro Terada (J) Takashi Yorino (J) |
Mazda RX-7 | Mazda Auto Tokyo | 617 | 1. | GTU | 32. | 2:05,955 | |
| 6. | 77 | Walt Bohren (USA)
Amos Johnson (USA) Roger Mandeville (USA) |
Mazda RX-7 | Mazda Auto Tokyo | 615 | 2. | GTU | 34. | 2:06,804 | |
| 7. | 60 | Rusty Bond (USA)
Ren Tilton (USA) |
Porsche 911 | E. J. Pruitt | 612 | 3. | GTU | 50. | 2:12,729 | |
| 8. | 54 | Tony Garcia (USA)
Juan Montalvo (C) Alberto Vadia (USA) |
Porsche Carrera | Montura Racing | 587 | 2. | GTO | 33. | 2:06,274 | |
| 9. | 98 | Lance Van Every (USA)
Ash Tisdelle (USA) Robert Overby (USA) |
Porsche Carrera RSR | Van Every Racing | 579 | 3. | GTO | 30. | 2:04,607 | |
| 10. | 03 | Angelo Pallavicini (CH)
Enzo Calderari (CH) Marco Vanoli (CH) |
Porsche 934 930 670 0162 | Angelo Pallavicini | 577 | 4. | GTO | 40. | 2:09,383 | |
| 11. | 75 | Mike Ramirez (PR)
Manuel Villa (PR) Luis Gordillo (PR) |
Porsche 911 | Mike Ramirez | 560 | 4. | GTU | 49. | 2:12,600 | |
| 12. | 37 | Honorato Espinosa (CO)
Francisco Lopez (CO) Jorge Cortes (CO) |
Porsche Carrera | Luis Botero | 551 | 5. | GTO | 27. | 2:02,649 | |
| 13. | 33 | Peter Welter (USA)
Richard Aten (USA) Jack Refenning (USA) |
Porsche 911 | Peter Welter | 550 | 5. | GTU | 55. | 2:13,905 | |
| 14. | 58 | Diego Febles (PR)
Phil Currin (USA) |
Porsche Carrera | Diego Febles | 543 | 6. | GTO | 25. | 2:02,178 | |
| NRF | 5 | Charles Mendez (USA)
Johnny Rutherford (USA) Paul Miller (USA) |
Porsche 935 | Busch Beer Racing | 529 | Rear suspension | 4. | GTX | 12. | 1:53,028 |
| NRF | 27 | Ray Mummery (USA)
Tom Sheehy (USA) Luis Sereix (USA) |
Porsche 911S | Ray Mummery | 522 | Differential | 6. | GTU | 44. | 2:10,219 |
| NRF | 62 | Bill Koll (USA)
Jim Cook (USA) Dennis Aase (USA)* |
Porsche 914/6 | Koll Motor Sports | 511 | 7. | GTU | 39. | 2:09,314 | |
| 18. | 95 | Stephen Bond (USA)
Philip Dann (USA) |
Chevrolet Monza | Stephen E. Bond | 509 | 7. | GTO | 66. | no time | |
| 19. | 21 | John Wood (USA)
Tom Bagley (USA) Carl Shafer (USA) Joe Chamberlain (USA)^ |
Chevrolet Camaro | Oftedahl Racing | 493 | 8. | GTO | 14. | 1:57,717 | |
| 20. | 42 | Tom Ashby (USA)
Bill Bean (USA) Bob Beasley (USA) |
Porsche 911 | Bullwinkele Racing | 493 | 8. | GTU | 45. | 2:10,600 | |
| 21. | 08 | Terry Wolters (USA)
Nort Northam (USA) Richard Weiss (USA) |
Porsche 911 911 030 1263 | Moran Construction | 488 | 9. | GTU | 67. | no time | |
| 22. | 34 | George Drolsom (USA)
Mark Greb (USA) John Maffucci (USA) |
Porsche 911 | Drolsom Racing | 482 | 10. | GTU | 47. | 2:11,186 | |
| NC | 64 | C. C. Canada (USA)
Russ Boykin (USA) Tom Ciccone (USA) |
Chevrolet Camaro | Lenton B. McGill | 458 | 9. | GTO | 54. | 2:13,721 | |
| NC | 61 | Al Cosentino (USA)
Dick Starita (USA) Taku Akaike (J) Craig Fisher (CDN)* John Kelly (USA)* Rocky Aoki (USA)* |
Mazda RX-3 | Alfred Cosentino | 444 | 11. | GTU | 48. | 2:11,757 | |
| DNF | 8 | Anatoly Arutunoff (USA)
José Marina (USA) Danny Sullivan (USA) Billy Pryor (USA)* |
Lancia Stratos | Anatoly Arutunoff | 439 | 12. | GTU | 53. | 2:13,226 | |
| DNF | 6 | Dick Barbour (USA)
Brian Redman (GB) Paul Newman (USA) |
Porsche 935/77A 930 890 0024 | Dick Barbour Racing | 410 | Dropped valve | 5. | GTX | 7. | 1:51,625 |
| DNF | 80 | Herb Adams (USA)
Peter Frey (USA) Louis Spoerl (USA) |
Pontiac Firebird | Herb Adams | 408 | Oil pressure | 10. | GTO | 65. | no time |
| DNF | 17 | Jim Mederer (USA)
Don Sherman (USA) Jeff Kline (USA) Ron Reed (USA)* |
Mazda RX-7 | Mederer/Oku | 393 | 13. | GTU | 43. | 2:10,099 | |
| DNF | 93 | Dale Whittington (USA)
R. D. Whittington (USA) Preston Henn (USA) Bill Whittington (USA)* Juergen Barth (D)* |
Porsche 934 930 670 0173 | Whittington Brothers Racing | 389 | Accident | 11. | GTO | 35. | 2:06,847 |
| DNF | 71 | Bill Scott (USA)
Mark Hutchins (USA) Pierre Honegger (USA) |
Porsche 911 | Bill Scott | 388 | 14. | GTU | 41. | 2:09,451 | |
| DNF | 40 | Steve Southard (USA)
William Koch (USA) Earl Roe (USA) |
Porsche 914/6 | Performance Specialists | 385 | 15. | GTU | 59. | 2:15,466 | |
| DNF | 1 | Bob Wollek (F)
Jacky Ickx (B) Peter Gregg (USA) |
Porsche 935/77A 930 890 0015 | Gelo Racing Team | 342 | Valves | 6. | GTX | 3. | 1:47,028 |
| DNF | 69 | Klaus Bytzek (CDN)
Rudy Bartling (CDN) Ludwig Heimrath (CDN) |
Porsche Carrera | Bytzek Automotive | 335 | Oil system | 12. | GTO | 28. | 2:03,995 |
| DNF | 29 | Billy Hagan (USA)
Hoyt Overbagh (USA) Ron Reed (USA) |
Chevrolet Monza | Stratagraph | 331 | 13. | GTO | 18. | 1:59,994 | |
| DNF | 89 | Joseph Hamilton (USA)
Rob Hoskins (USA) Herb Forrest (USA) |
Porsche 911 | Hamilton House Racing | 329 | 16. | GTU | 46. | 2:10,618 | |
| DNF | 51 | Robert Kirby (USA)
John Hotchkis (USA) Howard Meister (USA) |
Porsche Carrera | Casa Blanca Fan | 328 | 14. | GTO | 37. | 2:08,292 | |
| DNF | 15 | Alf Gebhardt (USA)
Sepp Grinbold (USA) Bruno Beilcke (USA)* |
BMW CSL | Bavarian Motors International | 299 | 15. | GTO | 36. | 2:08,166 | |
| DNF | 81 | Ernesto Soto (YV)
Francisco Romero (YV) Oscar Notz (YV) |
Porsche Carrera | Performance Export | 241 | 16. | GTO | 21. | 2:01,072 | |
| DNF | 01 | Dave White (USA)
J. Kurt Roehrig (USA) John Hamilton (USA) |
Porsche 911 | D. R. Racing | 223 | 17. | GTU | 38. | 2:08,508 | |
| DNF | 13 | Hal Shaw, Jr. (USA)
Tom Spalding (USA) Norm Ridgely (CDN) |
Porsche 935 930 670 0180 | Hal Shaw Racing | 222 | Turbocharger | 7. | GTX | 42. | 2:09,852 |
| DNF | 36 | Ron Case (USA)
Dave Panaccione (USA) |
Porsche 911 | Case Racing | 210 | 18. | GTU | 52. | 2:13,041 | |
| NC | 53 | Guy Thomas (USA)
Milton Moise (USA) Tom Nehl (USA) |
Chevrolet Camaro | Guy Thomas | 201 | 8. | GTX | 51. | 2:12,783 | |
| DNF | 06 | Al Levenson (USA)
Gary Baker (USA) Lanny Hester (USA) |
Chevrolet Corvette | Al Levenson | 197 | 17. | GTO | 57. | 2:14,960 | |
| DNF | 23 | Charlie Kemp (USA)
Carson Baird (USA) Kees Nierop (USA) |
Ford Mustang Cobra II | Charlie Kemp | 168 | 9. | GTX | 10. | 1:56,726 | |
| DNF | 3 | Martino Finotto (I)
Carlo Facetti (I) Gianpiero Moretti (I) |
Porsche 935 930 770 0911 | Jolly Club - Sportwagen Racing Team | 164 | Engine | 10. | GTX | 1. | 1:46,113 |
| DNF | 4 | Reinhold Jöst (D)
Rolf Stommelen (D) Volkert Merl (D) |
Porsche 935J 930 890 0014 | LM Joest Porsche | 162 | Engine | 11. | GTX | 4. | 1:47,907 |
| DNF | 90 | Rick Kump (USA)
Bob Lee (USA) Sam Miller (USA) |
AMC AMX | Bob's Speed Products | 156 | 18. | GTO | 56. | 2:14,460 | |
| DNF | 12 | Gerry Wellik (USA)
Tom Bagley (USA) Joe Chamberlain (USA) John Wood (USA)^ |
Chevrolet Camaro | Gordon Oftedahl | 147 | 19. | GTO | 26. | 2:02,578 | |
| DNF | 56 | Craig Carter (USA)
Murray Edwards (CDN) Richard Valentine (USA) |
Chevrolet Camaro | Peerless Racing | 144 | 20. | GTO | 17. | 1:59,423 | |
| DNF | 2 | Manfred Schurti (FL)
John Fitzpatrick (GB) Bob Wollek (F) |
Porsche 935/77A 930 890 0020 | Gelo Racing Team | 135 | Valves | 12. | GTX | 2. | 1:46,746 |
| DNF | 57 | John Tremblay (USA)
Bob Lapp (USA) |
Datsun 240Z | John Tremblay | 118 | Gearbox | 19. | GTU | 63. | no time |
| DNF | 9 | Bob Akin (USA)
Rob McFarlin (USA) Roy Woods (USA) |
Porsche 935 930 770 0910 | Dick Barbour Racing | 117 | Engine | 13. | GTX | 9. | 1:54,500 |
| DNF | 66 | Jean-Claude Andruet (F)
Spartaco Dini (I) Claude Ballot-Léna (F) |
Ferrari 512 BB 26681 | Charles Pozzi - JMS | 103 | Withdrawn after Delaunay's accident | 14. | GTX | 15. | 1:58,780 |
| DNF | 67 | Claude Ballot-Léna (F)
Michel Leclére (F) Jean-Claude Andruet (F) |
Ferrari 512 BB 26685 | Charles Pozzi - JMS | 101 | Withdrawn after Delaunay's accident | 15. | GTX | 13. | 1:57,376 |
| DNF | 24 | Graham Shaw (USA)
Don Yenko (USA) Jerry Thompson (USA) |
Chevrolet Monza | Graham Shaw | 86 | 16. | GTX | 62. | no time | |
| DNF | 38 | Bonky Fernandez (PR)
Chiqui Soldevilla (PR) Tato Ferrer (PR) Armando Gonzalez (PR)* |
Porsche Carrera RSR | Boricua Racing | 73 | 21. | GTO | 20. | 2:00,948 | |
| DNF | 68 | Bob Tullius (USA)
Jean-Pierre Delaunay (F) Pat Bedard (USA) Jacques Guerin (F)* |
Ferrari 512 BB 26683 | North American Racing Team | 72 | Accident | 17. | GTX | 16. | 1:58,823 |
| DNF | 43 | Bill McDill (USA)
Stephen Behr (USA) |
Chevrolet Camaro | Mike Meldeau | 59 | 18. | GTX | 31. | 2:05,621 | |
| DNF | 46 | Mauricio DeNarvaez (CO)
Albert Naon (USA) Pedro DeNarvaez (CO) |
Porsche Carrera | de Narvaez Racing | 46 | 22. | GTO | 23. | 2:01,586 | |
| DNF | 07 | Dave Cowart (USA)
David McClain (USA) Kenper Miller (USA) |
Porsche Carrera | Morrison's | 35 | 23. | GTO | 22. | 2:01,412 | |
| DNF | 00 | Preston Henn (USA)
Ted Field (USA)^ Danny Ongais (USA)^ |
Porsche 935/77A 930 890 0019 | Interscope Racing | 29 | Accident | 19. | GTX | 11. | 1:52,807 |
| DNF | 14 | Steve Griswold (USA)
Steve Earle (USA)^ Rick Knoop (USA)^ Wolfgang Nachsel (USA)* |
BMW CSL | Bavarian Motors International | 25 | Cooling system | 20. | GTX | 61. | no time |
| DNF | 96 | Gary Wonzer (USA)
Robert Whitaker (USA)^ George Van Arsdale (USA)^ Richard C. Hughes (USA)^ |
Triumph GT-6 | Gary Wonzer | 20 | Electrics | 20. | GTU | 60. | 2:16,117 |
| DNF | 48 | Frank Leary (USA)
Casey Mollett (USA)^ Steve Cook (USA)^ |
Datsun 240Z | Frank Leary | 13 | Cooling system | 21. | GTU | 58. | 2:15,453 |
| DNF | 18 | John Paul (USA)
Al Holbert (USA)^ Michael Keyser (USA)^ Gianpiero Moretti (I)* |
Porsche 935 JLP-1 JLP-1 | J.L.P. Racing | 12 | Electrics | 21. | GTX | 5. | 1:48,426 |
| DNF | 79 | Bob Bergstrom (USA)
Brad Frisselle (USA)^ |
Mazda RX-7 | Sports Ltd. Racing | 9 | Suspension | 22. | GTU | 64. | no time |
| DNF | 73 | Clark Howey (USA)
Dale Koch (USA)^ Tracy Wolf (USA)^ |
Chevrolet Camaro | Clark Howey | 4 | 22. | GTX | 29. | 2:04,328 | |
| DNS | 63 | Al Cosentino (USA)
Craig Fisher (CDN) Stephen Behr (USA)* Taku Akaike (J)* Dick Starita (USA)* |
Mazda RX-3 | Alfred Cosentino | GTU | no time | ||||
| DNS | 78 | Ken Williams (USA)
Wiley Doran (USA) Neil Upchurch (USA) |
Datsun 240Z | Associated Speed & Performance | GTU | no time | ||||
| DNS | T | Yoshimi Katayama (J)
Yojiro Terada (J) Takashi Yorino (J) Walt Bohren (USA) Jim Downing (USA) Roger Mandeville (USA) |
Mazda RX-7 | Mazda Auto Tokyo | GTU | no time | ||||
| DNA | 04 | Rick Thompkins (USA)
Dave Heinz (USA) Tom Cochran (USA) |
Chevrolet Corvette | Rick Thompkins | GTO | |||||
| DNA | 05 | Cliff Gottlob (USA)
Danny Terrill (USA) |
Chevrolet Corvette | Cliff Gottlob | ||||||
| DNA | 20 | Vince DiLella (USA)
Manuel Cueto (USA) Jose Fernandez (USA) |
Porsche 914/6 | Vince DiLella | GTU | |||||
| DNA | 22 | Dale Kreider (USA)
Bruce Davidson (USA) |
Chevrolet Corvette | Dale Kreider | GTO | |||||
| DNA | 25 | Robert LaMay (USA)
Larry Parker (USA) |
Ford Mustang II | Larry Parker | ||||||
| DNA | 31 | Hiram Cruz (USA)
Juan Lopez (DR) Mandy Gonzalez (PR) |
Porsche 911 | Hiram Cruz | GTU | |||||
| DNA | 35 | Pedro DeNarvaez (CO)
Luis Botero (CO) Henning Buff (CO) |
Porsche Carrera | Luis Botero | ||||||
| DNA | 44 | Kent Murry (USA)
George Van Arsdale (USA) Richard Weiss (USA) |
Porsche 911 | Sud Porsche Racing | GTU | |||||
| DNA | 45 | Jan Chudziak (USA)
Paul Cloutier (USA) Lou Timolat (USA) |
Mazda RX-3 | Paul Cloutier | GTU | |||||
| DNA | 83 | Harro Zitza (USA)
John Belperche (USA) Doug Zitza (USA) |
Porsche 914/6 | Zotz Garage | GTU | |||||
| DNA | 85 | John Hulen (USA)
Ron Coupland (USA) Bob Speakman (USA) |
Porsche 914/6 | John E. Hulen | GTU | |||||
| DNA | 86 | Tom Ross (USA)
William Kull (USA) James Southard (USA) |
Ford Pinto | Tom Ross | GTX | |||||
| DNA | 87 | Charles Gano (USA)
Earle Moffitt (USA) Robert Uiterwyk (USA) |
Chevrolet Corvette | Uiterwyk/Moffitt | ||||||
| DNA | 88 | Dave Yerger (USA)
Dario Orlando (USA) Tony Cassata (USA) |
Alfa Romeo GTV | Dave Yerger | GTU |
| Winning Time: 24h00m24.87, 109.409 mph/176.076 kph |
| Fastest Lap: Peter Gregg #1 (Porsche 935-77A), 1m49.477, 126.273 mph/203.217 kph |
| * Driver entered for car, but never drove it at meeting |
| ^ Driver practiced car, but did not race it |
| RES - Reserve (Practiced, on standy-by for start) |
| REE - Reserve Entry |
| DNA - Did Not Arrive |
| DNS - Did Not Start |
| DNF - Did Not Finish |
| DNP - Did Not Practice |
| NC - Not Classified |
| DSQ - Disqualified |
| NRF - Not Running At Finish |
| NAC - Not Accepted |
| REJ - Rejected (Did not pass scrutineering) |