| Pos. | No. | Driver / Nationality | Car | Entrant | Laps | Time/retired | Grp Pos | Group | Grid | Qual Time |
|---|---|---|---|---|---|---|---|---|---|---|
| 1. | 1 | Jochen Mass (D)
Jacky Ickx (B) |
Porsche 935/77 005 | Martini Racing Porsche System | 173 | 6:01:56,685 | 1. | Gr.5 | 1. | 1:52,518 |
| 2. | 16 | George Follmer (USA)
Brett Lunger (USA) |
Porsche 935 930 770 0913 | Vasek Polak Racing | 170 | 2. | Gr.5 | 3. | 1:56,062 | |
| 3. | 95 | Hurley Haywood (USA)
Bob Hagestad (USA) |
Porsche 934 930 770 0957 | Bob Hagestad Porsche Audi | 169 | 6:02:12,277 | 3. | Gr.5 | 5. | 1:57,824 |
| 4. | 66 | Dick Barbour (USA)
Johnny Rutherford (USA) |
Porsche 934 930 770 0959 | Dick Barbour Performance | 166 | 4. | Gr.5 | 10. | 2:01,831 | |
| 5. | 0 | Danny Ongais (USA)
Ted Field (USA) |
Porsche 934 930 770 0953 | Interscope Racing | 165 | 5. | Gr.5 | 8. | 1:58,380 | |
| 6. | 59 | Peter Gregg (USA)
Claude Ballot-Léna (F) John Gunn (USA) - DNP |
Porsche 934 930 770 0952 | Brumos Racing | 163 | 6. | Gr.5 | 6. | 1:57,879 | |
| 7. | 51 | Robert Frostrom (USA)
Monte Shelton (USA) |
Porsche Carrera RSR | Monte's Motors | 162 | 7. | Gr.5 | 22. | 2:08,323 | |
| 8. | 7 | Ludwig Heimrath (CDN)
Paul Miller (USA) |
Porsche 934 930 770 0958 | Heimrath Racing | 160 | 8. | Gr.5 | 9. | 2:00,460 | |
| 9. | 57 | Bob Lazier (USA)
John Wood (USA) |
Porsche 911 Carrera | John Wood Racing | 158 | - | 30. | 2:11,224 | ||
| 10. | 20 | Janet Guthrie (USA)
Randy Lewis (USA) Howdy Holmes (USA)* |
Porsche 934 930 670 0179? | Vasek Polak Racing | 157 | 9. | Gr.5 | 13. | 2:03,516 | |
| 11. | 98 | John Bauer (USA)
Tom Spalding (USA) |
Porsche 911 | John Bauer Racing | 156 | 1. | GT | 25. | 2:09,759 | |
| 12. | 61 | Jim Busby (USA)
Tom Frank (USA) |
Porsche 935 930 770 0951 | Jim Busby Racing | 156 | 10. | Gr.5 | 7. | 1:58,353 | |
| 13. | 78 | Babe Headley (USA)
Sam Feinstein (USA) |
Chevrolet Corvette | Babe's Garage | 155 | - | 28. | 2:10,242 | ||
| 14. | 44 | Brian Fuerstenau (USA)
Bob Tullius (USA) |
Jaguar XJS | Group 44, Inc. | 154 | - | 21. | 2:08,182 | ||
| 15. | 2 | Gary Belcher (USA)
Roy Woods (USA) |
Porsche 934 930 670 0175??? | Vasek Polak Racing | 153 | 11. | Gr.5 | 14. | 2:03,884 | |
| 16. | 74 | Bruce Jennings (USA)
Bill Bean (USA) |
Porsche 911S | Bruce Jennings | 147 | 2. | GT | 38. | 2:19,538 | |
| 17. | 31 | Warren Agor (USA)
Paul Nichter (USA) |
Chevrolet Monza | Warren Agor | 145 | - | 16. | 2:06,065 | ||
| 18. | 93 | Michael Oleyar (USA)
John Brandt (USA) |
Chevrolet Corvette | Little Foreign Car Shop | 140 | - | 33. | 2:13,378 | ||
| 19. | 45 | William Coykendall (USA)
James Mancuso (USA) |
Chevrolet Corvette/Greenwood | Motion Marketing | 137 | - | 24. | 2:09,286 | ||
| 20. | 79 | Michael Callas (USA)
Peter Papke (USA) |
Porsche Carrera RSR | Michael Callas Rennsport Porsche | 136 | 3. | GT | 29. | 2:10,395 | |
| 21. | 30 | Alex Davidson (USA)
Kerry Hitt (USA) Roger Pierce (USA)* |
Chevrolet Corvette | Alex Davidson Racing | 135 | 4. | GT | 34. | 2:13,652 | |
| 22. | 80 | Nick Engels (USA)
Bob Nagel (USA) |
Chevrolet Corvette | Nagel Racing | 124 | - | 27. | 2:10,079 | ||
| NRF | 9 | John Huber (USA)
Ron Weaver (USA) |
Chevrolet Corvette | Team Apple/Monoca Huber | 121 | Engine | - | 26. | 2:09,839 | |
| DNF | 76 | Paul DePirro (USA)
Buzz Fyhrie (USA) Burt Greenwood (USA)^ |
Chevrolet Corvette/Greenwood GT Greenwood 007 | Rick Mancuso Chevrolet Corvettes | 120 | Engine | - | 15. | 2:05,931 | |
| NC | 18 | David Kicak (USA)
Bob Young (USA) |
Chevrolet Corvette | Free Spirit Racing | 120 | - | 39. | 2:19,680 | ||
| NC | 96 | Neil Kassel (USA)
Rex Franklin (USA) |
Chevrolet Corvette | GTS/Kassel Auto Parts | 117 | - | 43. | no time | ||
| NC | 92 | John Orr (USA)
Bill Jobe (USA) |
Chevrolet Corvette | E. F. Miller | 112 | - | 36. | 2:15,151 | ||
| DNF | 4 | Hans-Joachim Stuck (D)
Benny Parsons (USA) Harald Grohs (D)^ |
BMW 320i | BMW Faltz Assen | 110 | Overheating | Gr.5 | 12. | 2:03,399 | |
| DNF | 64 | Bob Baechle (USA)
Earl Hurlbut (USA) |
Chevrolet Corvette | Auto Barn | 98 | Engine | - | 37. | 2:16,784 | |
| DNF | 28 | Richard Weiss (USA)
Bill Wolfe (USA)^ |
Porsche 911SC | Weiss Motor Racing | 95 | GT | 40. | 2:21,094 | ||
| DNF | 77 | John Greenwood (USA)
Dick Smothers (USA) |
Chevrolet Corvette/Greenwood | John Greenwood Racing | 92 | Valve | - | 4. | 1:56,814 | |
| DNF | 56 | Craig Carter (USA)
David Laughlin (USA) |
Chevrolet Camaro | Carter Brothers Racing | 90 | Off course | - | 19. | 2:07,608 | |
| DNF | 83 | Bill Scott (USA)
Joe Colontonio (USA) |
Porsche 911S | Bill Scott Racing | 89 | Body damage | GT | 35. | 2:13,666 | |
| DNF | 90 | Thomas Rynone (USA)
Neil Wiernicki (USA) Michael Wiernicki (USA)^ |
Chevrolet Corvette | Rynone Industries | 72 | Engine | GT | 32. | 2:13,293 | |
| DNF | 94 | Elliot Forbes-Robinson (USA)
Mike Tillson (USA) |
Porsche 934 930 670 0152 | Mike Tillson Enterprises, Inc. | 68 | Oil leak | GT | 17. | 2:06,120 | |
| DNF | 13 | Hal Shaw, Jr. (USA)
Randolph Townsend (USA) |
Porsche Carrera RSR | Hal Shaw, Jr. | 59 | Unknown | Gr.5 | 31. | 2:12,677 | |
| DNF | 38 | John Paul (USA)
Phil Currin (USA) |
Porsche Carrera RSR | John Paul | 58 | Suspension | - | 18. | 2:07,565 | |
| DNF | 6 | Greg Pickett (USA)
Tom Gloy (USA) Dave Mock (USA)^ |
Chevrolet Monza DeKon 1010 | Pickett Racing | 55 | Accident | - | 11. | 2:02,713 | |
| DNF | 48 | Len LaCue (USA)
Doug Mills (USA) |
Chevrolet Camaro Z28 | LaCue Racing | 52 | Engine failure | - | 23. | 2:09,240 | |
| DNF | 75 | Norm Ridgely (CDN)
Jim Cook (USA) |
Porsche Carrera RSR | Ridgely Racing | 48 | Off course | Gr.5 | 20. | 2:07,692 | |
| DNF | 71 | Ted Sullivan (USA)
David Jones (USA)^ |
Chevrolet Camaro Z28 | Triumph Manufacturing | 40 | Engine failure | T | 42. | no time | |
| DNF | 15 | Bill Schumacher (USA)
Rick Hay (USA)^ |
Chevrolet Corvette | Iroquois Racing Associates | 31 | Transmission | GT | 44. | no time | |
| DNF | 3 | Ronnie Peterson (S)
David Hobbs (GB) |
BMW 320i Turbo | McLaren North America | 20 | Accident, handling | Gr.5 | 2. | 1:52,997 | |
| DNF | 17 | Brian Goellnicht (USA)
Anatoly Arutunoff (USA)^ |
Lancia Stratos | Hallet Motor Racing Circuit | 6 | Throttle linkage | GT | 41. | no time | |
| DNA | 00 | Ted Field (USA)
Danny Ongais (USA) |
Porsche 934 | Interscope Racing | GT | |||||
| DNA | 12 | Ron Brown (USA)
Joe Chamberlain (USA) |
Ron W. Brown Investments | - | ||||||
| DNA | 36 | Brian Hardacre (CDN)
Horst Petermann (CDN) |
Porsche Carrera RSR | Climax Autoquip Inc. | GT | |||||
| DNA | 40 | Dave Heinz (USA)
Robert Schurnberg (USA) |
Chevrolet Corvette Greenwood Greenwood 008 | Robert Schunberg | GT | |||||
| DNA | 50 | Sylvan Cornblatt (USA)
Richard Mandelson (USA) |
Chevrolet Corvette | American 76 Racing | GT | |||||
| DNA | 60 | John Brandt (USA) | Chevrolet Corvette | John Brandt, Jr. | GT | |||||
| DNA | 72 | Bill Arnold (USA)
Billy Hagan (USA) |
Chevrolet Corvette/Greenwood GT | Bill Arnold Racing | GT | |||||
| DNA | 88 | Peter Overing (CDN)
Marcel Talbot (CDN) |
Porsche Carrera RSR | Dicom Corporation | GT |
| Winning Time: 6h01m56.685, 96.847 mph/155.860 kph |
| Fastest Lap: Jochen Mass #1 (Porsche 935-77), 1m53.277, 107.323 mph/172.719 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) |