| Pos. | No. | Driver / Nationality | Car | Entrant | Laps | Time/retired | Grp Pos | Group | Grid | Qual Time |
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 18 | John Paul Sr (USA)
John Paul Jr (USA) |
Porsche 935JLP-2 (Kremer) 000 00025 | John Paul Sr | 125 | 4h59m48.99 | 1 | GTX | 7 | 2:14.495 |
| 2 | 6 | John Fitzpatrick (GB)
Dick Barbour (USA) |
Porsche 935K3 (Kremer) | Dick Barbour | 125 | 5h01m51.18 | 2 | GTX | 1 | 2:09.700 |
| 3 | 9 | Bobby Rahal (USA)
Bob Garretson (USA) |
Porsche 935K3 (Kremer) 0910-DBR1 | Dick Barbour | 122 | 3 | GTX | 2 | 2:12.628 | |
| 4 | 09 | Dale Whittington (USA)
Preston Henn (USA) |
Porsche 935K3 (Kremer) 9308900024 | Preston Henn | 121 | 4 | GTX | 6 | 2:13.777 | |
| 5 | 5 | Brian Redman (GB)
Bob Akin (USA) Paul Miller (USA) |
Porsche 935K3 (Kremer) | Mendez/Woods/Akin | 120 | 5 | GTX | 9 | 2:16.801 | |
| 6 | 25 | David Cowart (USA)
Kenper Miller (USA) |
BMW M1 | David Cowart | 115 | 6 | GTX | 14 | 2:26.051 | |
| 7 | 44 | Bob Tullius (USA)
Bill Adam (CDN) |
Triumph TR8 | Bob Tullius | 115 | 1 | GTO | 16 | 2:26.600 | |
| 8 | 83 | Don C. Devendorf (USA)
Tony Adamowicz (USA) |
Datsun 280ZX | Don C. Devendorf | 114 | 1 | GTU | 19 | 2:27.624 | |
| 9 | 64 | Dennis Aase (USA)
Bob Bergstrom (USA) Alan Johnson (USA)* |
Porsche 911 | Alan L. Johnson | 113 | 2 | GTO | 15 | 2:26.030 | |
| 10 | 54 | Terry Herman (USA)
Tony Garcia (USA) Albert Naon (USA)^ |
Porsche 911 Carrera | Montura Racing | 113 | 3 | GTO | 18 | 2:27.373 | |
| 11 | 7 | Walt Bohren (USA)
Jeff Kline (USA) |
Mazda RX-7 | Mederer/Oku | 113 | 2 | GTU | 24 | 2:29.072 | |
| 12 | 73 | Ernesto Soto (YV)
Pierre Honegger (USA) |
Mazda RX-7 | Pierre Honegger | 111 | 3 | GTU | 33 | 2:34.584 | |
| 13 | 91 | Roger Schramm (USA)
Ted Klint (USA) Werner Frank (USA) |
Porsche 911 Carrera RSR | Frank/Schramm | 111 | 4 | GTO | 27 | 2:32.447 | |
| 14 | 32 | Brett Lunger (USA)
George Alderman (USA) |
Datsun 240Z | George Alderman | 111 | 4 | GTU | 35 | 2:35.404 | |
| 15 | 30 | Gianpiero Moretti (I)
Jim Busby (USA) Derek Bell (GB)* |
Porsche 935J (Joest) 9308900014 | Gianpiero Moretti | 110 | 7 | GTX | 3 | 2:12.700 | |
| 16 | 56 | Craig Carter (USA)
Murray Edwards (CDN) |
Chevrolet Camaro (Peerless) | Rick Hendrick | 107 | 5 | GTO | 21 | 2:28.299 | |
| 17 | 68 | Luis Mendez (DR)
Jaime Rodriguez (DR) |
Porsche 911 Carrera | Luis Mendez | 103 | 6 | GTO | 17 | 2:27.056 | |
| 18 | 34 | George Drolsom (USA)
Bill Johnson (USA) |
Porsche 911 | George Drolsom | 103 | 5 | GTU | 42 | 2:42.090 | |
| 19 | 82 | John Casey (USA)
Steve Dietrich (USA) |
Mazda RX-7 | Trinity Racing | 101 | 6 | GTU | 32 | 2:34.134 | |
| NRF | 0 | Ted Field (USA)
Milt Minter (USA) |
Porsche 935K3 (Kremer) 000 00017 | Ted Field | 100 | engine | GTX | 4 | 2:13.490 | |
| 21 | 66 | Jack Dunham (USA)
John Maffucci (USA) Jim Downing (USA)* |
Mazda RX-7 | Jack Dunham | 100 | 7 | GTU | 47 | 2:44.590 | |
| 22 | 24 | Douglas Grunnet (USA)
Glen R. Johnson (USA) |
Mazda RX-7 | Corp Racing | 99 | 8 | GTU | 46 | 2:43.921 | |
| 23 | 84 | Dave Rein (USA)
Richard Rosenmerkel (USA) |
Chevrolet Camaro | Rainbow Racing | 98 | 7 | GTO | 40 | 2:37.986 | |
| 24 | 75 | Billy Hagan (USA)
Dale Kreider (USA) |
Chevrolet Corvette | Dale Kreider | 96 | 8 | GTO | 39 | 2:36.592 | |
| 25 | 38 | Jack Buchinger (USA)
Mike Guffey (USA) |
Datsun 280ZX | John Buchinger | 96 | 9 | GTU | 44 | 2:43.829 | |
| NRF | 57 | Karen Erstad (USA)
Pat Daily (USA) |
Porsche 914/6 | Performance Porsche | 89 | GTU | 45 | 2:43.856 | ||
| NC | 49 | Jim Moyer (USA)
Phillip Pate (USA) |
Chevrolet Corvette | Jim Moyer | 84 | GTX | 26 | 2:30.550 | ||
| NC | 52 | Wayne Baker (USA)
Jeff Scott (USA) |
Porsche 914/6 | Wayne Baker | 83 | GTU | 34 | 2:34.839 | ||
| NC | 23 | Dick Davenport (USA)
Frank Carney (USA) |
Datsun 280ZX | Frank Carney | 83 | GTU | 28 | 2:32.706 | ||
| NRF | 48 | John Carusso (USA)
Phil Currin (USA) |
Chevrolet Corvette | John Carusso | 80 | mechanical | GTO | 22 | 2:28.348 | |
| DNF | 80 | Richard J. Valentine (USA)
Maurice Carter (CDN) |
Chevrolet Camaro (Descon) | Maurice Carter | 79 | GTX | 13 | 2:24.539 | ||
| DNF | 41 | Rusty Schmidt (USA)
Daniel Schott (USA) |
Chevrolet Corvette | Corvettes Unlimited | 63 | GTO | 38 | 2:36.586 | ||
| DNF | 62 | William Koll (USA)
Jim Cook (USA) |
Porsche 911 | William Koll | 58 | GTU | 25 | 2:30.188 | ||
| NC | 37 | Bard Boand (USA)
Ray Irwin (USA) |
Chevrolet Corvette | Bard Boand | 57 | GTO | 31 | 2:33.735 | ||
| DNF | 02 | Paul Canary (USA)
Jim Sanborn (USA) |
Chevrolet Corvette | Paul Canary | 48 | GTO | 29 | 2:32.949 | ||
| DNF | 19 | Chris Cord (USA)
Jim Adams (USA) |
Chevrolet Monza (DeKon) | Chris Cord | 45 | GTX | 8 | 2:16.195 | ||
| DNF | 86 | Hurley haywood (USA)
Bruce Leven (USA) |
Porsche 935-77A 9307700909 | Bruce Leven | 40 | aerodynamics | GTX | 5 | 2:13.537 | |
| DNF | 46 | Mauricio de Narvaez (CO)
Albert Naon (USA) Tony Garcia (USA) |
Porsche 911 Carrera | Mauricio de Narvaez | 38 | accident | GTO | 30 | 2:33.510 | |
| DNF | 33 | Sam Posey (USA)
Paul Newman (USA) |
Datsun 280ZX (Crowe) | Bob Sharp | 38 | engine | GTX | 11 | 2:18.439 | |
| DNF | 81 | Tom Winters (USA)
Jim Mullen (USA) |
Mazda RX-7 | Trinity Racing | 36 | accident | GTU | 36 | 2:35.501 | |
| DNF | 87 | Ronald Drew (USA)
John Staab (USA) Bill Porter (USA) |
Chevrolet Corvette | Ronald Drew | 35 | GTO | 53 | no time | ||
| DNF | 85 | Ron Coupland (USA)
John E. Hulen (USA) |
Porsche 914/6 | John E. Hulen | 30 | GTU | 43 | 2:43.058 | ||
| DNF | 40 | Mark Altman (USA)
Steve Southard (USA)^ Gary Altman (USA)^ |
Porsche 914/6 | Steve Southard | 17 | GTU | 37 | 2:36.351 | ||
| DNF | 20 | Bruce Jenner (USA)
Rick Knoop (USA)^ |
Chevrolet Monza (DeKon) | Chris Cord | 13 | GTX | 12 | 2:20.551 | ||
| DNF | 78 | Clark Howey (USA)
Dale Koch (USA) |
Chevrolet Camaro | Clark Howey | 12 | overheating | GTO | 52 | no time | |
| DNF | 8 | Anatoly Arutunoff (USA)
Jose Marina (USA)^ |
Lancia Stratos | Anatoly Arutunoff | 10 | GTU | 41 | 2:41.796 | ||
| DNF | 07 | Ludwig Heimrath (CDN)
Ludwig Heimrath Jr (CDN)^ |
Porsche 935 9307700958 | Ludwig Heimrath | 10 | GTX | 10 | 2:17.025 | ||
| DNF | 29 | Thomas E. Cronin (USA)
Ken Boldt (USA)^ |
Fiat 128 | Thomas E. Cronin | 7 | GTU | 49 | 2:54.505 | ||
| DNF | 47 | Brad Frisselle (USA)
Roger Mandeville (USA)^ |
Mazda RX-7 | Brad Frisselle | 4 | GTU | 20 | 2:28.075 | ||
| DNF | 14 | Mark Leuzinger (USA)
Mike van der Werff (USA)^ |
De Tomaso Pantera | B.R.Racing | 2 | overheating | GTO | 48 | 2:51.844 | |
| DNS | 03 | Werner Frank (USA)
Carlos Moran (ES) |
Porsche 934 | Werner Frank | accident | GTO | 23 | 2:28.409 | ||
| DNS | 31 | Larry Trotter (USA)
Larry Voit (USA) |
Chevrolet Corvette | Midwest Corvette | GTO | 50 | no time | |||
| DNS | 76 | Joe Chamberlain (USA)
John Chamberlain (USA) |
Chevrolet Corvette | Arrow Racing | GTX | 51 | no time | |||
| DNS | 00 | Ted Field (USA)
Milt Minter (USA) |
Porsche 935-77A | Ted Field | GTX | 54 | no time | |||
| DNS | 01 | Don Yenko (USA)
Gene Rutherford (USA) |
Oldsmobile Cutlass | Don Yenko | GTO | 55 | no time | |||
| DNA | 3 | Jim Busby (USA) | Porsche 935 | Jim Busby | GTX | |||||
| DNA | 4 | Skeeter McKitterick (USA) | Porsche 935 9307700959 | Dick Barbour | GTX | |||||
| DNA | 17 | Jeff Kline (USA) | Mazda RX-7 | Mederer/Oku | GTU | |||||
| DNA | 68 | Richard J. Valentine (USA)
David Heinz (USA) |
Chevrolet Corvette (Markle) | Richard J. Valentine | GTX | |||||
| DNA | 71 | Philip Keirn (USA) | Chevrolet Corvette | Philip Keirn | GTO |
| Winning Time: 4h59m48.99, 100.061 mph/161.033 kph |
| Fastest Lap: John Fitzpatrick #6 (Porsche 935K3), 2m12.970, 108.295 mph/174.284 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) |