| Pos. | No. | Driver / Nationality | Car | Entrant | Laps | Time/retired | Grp Pos | Group | Grid | Qual Time |
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 86 | Hans-Joachim Stuck (D)
Klaus Ludwig (D) |
Porsche 962 121 | Bruce Leven | 318 | 12h00m57.782 | 1 | GTP | 4 | 1:56.116 |
| 2 | 0 | "John Winter" (D)
Frank Jelinski (D) Paolo Barilla (I) |
Porsche 962 116IM | Reinhold Joest | 309 | 2 | GTP | 9 | 2:03.652 | |
| 3 | 16 | Price Cobb (USA)
James Weaver (GB) Rob Dyson (USA)^ |
Porsche 962 122 | Rob Dyson | 307 | 3 | GTP | 2 | 1:55.864 | |
| 4 | 1 | Hurley Haywood (USA)
A.J.Foyt (USA) |
Porsche 962 (Holbert-Fabcar) HR4 | A.J.Foyt | 304 | 4 | GTP | 7 | 2:02.366 | |
| 5 | 10 | Jim Adams (USA)
John Hotchkis Sr (USA) John Hotchkis Jr (USA) |
Porsche 962 (Holbert-Fabcar) HR5/F02 | John Hotchkis Sr | 303 | 5 | GTP | 8 | 2:03.042 | |
| 6 | 5 | Wally Dallenbach Jr (USA)
John Jones (CDN) Tommy Riggins (USA)^ |
Chevrolet Corvette (Protofab) | Protofab | 289 | 1 | GTO | 19 | 2:11.263 | |
| 7 | 61 | Jan Lammers (NL)
Davy Jones (USA) Danny Sullivan (USA) John Nielsen (DK) |
Jaguar XJR-9 (Advanced) 288 | Tom Walkinshaw | 283 | 6 | GTP | 5 | 1:56.402 | |
| 8 | 6 | Lyn St. James (USA)
Deborah Gregg (USA) Pete Halsmer (USA)^ |
Merkur XR4Ti (Roush) | Jack Roush | 282 | 2 | GTO | 15 | 2:10.840 | |
| 9 | 9 | Thomas Hessert (USA)
David Loring (USA) David Simpson (USA)* |
Tiga-Buick GT288 | Mike Gue | 282 | 1 | GTP Lights | 22 | 2:13.594 | |
| 10 | 33 | Les Delano (USA)
Andy Petery (USA) Craig Carter (USA) |
Lincoln-Mercury Capri (Roush) | Jack Roush | 278 | 3 | GTO | 30 | 2:17.825 | |
| 11 | 11 | Scott Pruett (USA)
Pete Halsmer (USA) |
Merkur XR4Ti (Roush) | Jack Roush | 275 | 4 | GTO | 18 | 2:11.191 | |
| 12 | 76 | John Morton (USA)
P.J.Jones (USA) Parnelli Jones (USA) |
Mazda RX-7 (Cunningham) | Clayton Cunningham | 273 | 5 | GTO | 31 | 2:18.175 | |
| 13 | 40 | Angelo Pallavicini (CH)
Paolo Guaitamacchi (I) Uli Bieri (CDN) Martino Finotto (I) |
Tiga-Ferrari GT286 | Gaston Andrey | 269 | 2 | GTP Lights | 37 | 2:22.661 | |
| NRF | 63 | Jim Downing (USA)
Howard Katz (USA) Hiro Matsushita (J) |
Argo-Mazda JM19 | Jim Downing | 268 | overheating | 3 | GTP Lights | 29 | 2:17.521 |
| 15 | 71 | Dennis Shaw (USA)
Amos Johnson (USA) Al Bacon (USA)^ |
Mazda RX-7 (Highball) | Amos Johnson | 267 | 1 | GTU | 43 | 2:26.827 | |
| 16 | 38 | Roger Mandeville (USA)
Kelly Marsh (USA) Don Marsh (USA) |
Mazda RX-7 (Chassis Dynamics) | Roger Mandeville | 266 | 6 | GTO | 28 | 2:17.437 | |
| 17 | 75 | Bart Kendall (USA)
Tom Frank (USA) |
Mazda RX-7 (Cunningham) | Clayton Cunningham | 265 | 2 | GTU | 50 | 2:27.207 | |
| 18 | 80 | Martino Finotto (I)
Ruggero Melgrati (I) Guido Dacco (I) Carlo Facetti (I)* |
Alba-Ferrari AR6 | Gaston Andrey | 264 | 4 | GTP Lights | 16 | 2:10.951 | |
| 19 | 09 | Steve Durst (USA)
Michael Brackman (USA) Jeff Kline (USA) Tony Belcher (USA)^ |
Spice-Pontiac Firebird GTP | Durst/Brockman | 262 | 7 | GTP | 12 | 2:05.710 | |
| 20 | 82 | Dick Greer (USA)
Matt Mnich (USA) John Finger (USA) Mike Mees (USA) |
Mazda RX-7 (Chassis Dynamics) | Dick Greer | 261 | 3 | GTU | 60 | 2:33.248 | |
| 21 | 23 | Rex McDaniel (USA)
George Petrilak (USA) Scott Livingston (USA) |
Argo-Buick JM16 | George Petrilak | 259 | 5 | GTP Lights | 40 | 2:24.333 | |
| 22 | 55 | Paul Lewis (USA)
Terry Visger (USA) Jon Woodner (USA) |
Spice-Pontiac Fiero GTP | Joe Huffaker Jr | 251 | 6 | GTP Lights | 27 | 2:16.831 | |
| 23 | 53 | Jack Broomall (USA)
Tim Evans (USA) Garth Ullom (USA) |
Dodge Daytona | Carroll Shelby | 250 | 4 | GTU | 62 | 2:33.770 | |
| 24 | 94 | Ash Tisdelle (USA)
Lance Van Every (USA) Nort Northam (USA) |
Chevrolet Camaro (Riggins) | Ash Tisdelle | 232 | 7 | GTO | 39 | 2:23.680 | |
| 25 | 20 | Jack Refenning (USA)
Rusty Bond (USA) Freddy Baker (USA) |
Porsche 911 Carrera | Jack Refenning | 232 | 5 | GTU | 54 | 2:30.511 | |
| NRF | 19 | Bill Jacobson (USA)
John Schneider (USA) Jim Brown (USA) Ron McKay (USA) |
Tiga-Mazda GT287 | Mike Gue | 229 | gearbox | 7 | GTP Lights | 44 | 2:27.156 |
| 27 | 01 | Charles Morgan (USA)
Don Bell (USA) Hendrick ten Cate (NL) |
Spice-Pontiac Fiero GTP | Spice Engineering USA | 229 | 8 | GTP Lights | 26 | 2:16.726 | |
| 28 | 84 | Craig A. Rubright (USA)
Kermit Upton (USA) Rick Joeschke (USA)^ |
Chevrolet Camaro (Dillon) | Craig A. Rubright | 229 | 8 | GTO | 46 | 2:27.536 | |
| 29 | 89 | Peter Uria (USA)
Larry Figaro (USA) Dennis Winfree (USA) |
Porsche 911 Carrera RSR | Peter Uria | 226 | 6 | GTU | 63 | 2:33.998 | |
| NRF | 03 | Buz McCall (USA)
Paul Dallenbach (USA) Jack Baldwin (USA) Max Jones (USA)^ |
Chevrolet Camaro (Riggins) | Buz McCall | 225 | suspension | 9 | GTO | 33 | 2:17.825 |
| 31 | 54 | Bill Auberlen (USA)
Adrian Gong (USA) Gary Auberlen (USA) |
Porsche 911 | Gary Auberlen | 224 | 7 | GTU | 48 | 2:27.685 | |
| NC | 17 | Bob Reed (USA)
Al Bacon (USA) Amos Johnson (USA) Dennis Shaw (USA)* |
Mazda RX-7 (Chassis Dynamics) | Al Bacon | 217 | 8 | GTU | 49 | 2:28.164 | |
| NC | 90 | Rudi Bartling (CDN)
Rainer Brezinka (CDN) Fritz Hochreuter (CDN) Werner Frank (USA) |
Porsche 911 | Fritz Hochreuter | 217 | 9 | GTU | 61 | 2:33.295 | |
| NC | 42 | Howard Cherry (USA)
Charles Monk (CDN) Lorenzo Lamas (USA) Jack Newsom (USA) Tim McAdam (USA) James King (USA)^ John Higgins (USA)* |
Fabcar-Porsche | Lorenzo Lamas | 212 | 9 | GTP Lights | 35 | 2:20.854 | |
| NC | 92 | Del Russo Taylor (USA)
Bob Lee (USA) Gary Myers (USA) Mark Montgomery (USA) |
Pontiac Firebird (Python) | Bob Lee | 205 | 10 | GTO | 41 | 2:24.463 | |
| NC | 7 | Steve W. Roberts (USA)
J. Kurt Roehrig (USA) |
Pontiac Firebird | Highlands Racing | 197 | GTO | 52 | 2:29.103 | ||
| NC | 00 | Kal Showket (USA)
Neil Hanneman (USA) |
Dodge Daytona (Showket) | Kal Showket | 183 | GTU | 58 | 2:31.582 | ||
| NC | 69 | Greg Walker (USA)
Scott Lagasse (USA) King Smith (USA) |
Chevrolet Corvette (Lindferer) | Greg Walker | 174 | GTO | 38 | 2:23.136 | ||
| DNF | 49 | Doc Bundy (USA)
Whitney Ganz (USA) Bill Cooper (USA) |
March-Buick 86G | Herbert S. Parks | 173 | fuel system | GTP | 14 | 2:10.454 | |
| NC | 81 | Ken Bupp (USA)
Guy W. Church (USA) Robert Peters (CDN) |
Chevrolet Camaro (Frings) | Ken Bupp | 168 | GTO | 51 | 2:28.730 | ||
| DNF | 12 | Henry Brosnaham (USA)
Kurt Keller (USA) |
Chevrolet Camaro (Howe) | Henry Brosnaham | 161 | gearbox | GTO | 59 | 2:32.986 | |
| NC | 18 | Paul Romano (USA)
Bill McVey (USA) Robert Seaman (USA) William Hornack (USA) |
Mazda RX-7 | Simms/Romano | 161 | GTU | 56 | 2:31.092 | ||
| DNF | 22 | Sarel van der Merwe (ZA)
Elliott Forbes-Robinson (USA) |
Chevrolet Corvette GTP-T710 (Lola) HU/8610/02 | Rick Hendrick | 151 | engine | GTP | 6 | 1:58.861 | |
| DNF | 50 | Dan Ripley (USA)
Alan Freed (USA) Keith Rinzler (USA) Jeff Elghanayan (USA)* |
Pontiac Fiero | Marco Polo Motorsports | 145 | engine | GTU | 45 | 2:27.207 | |
| DNF | 02 | Tommy Kendall (USA)
Max Jones (USA) |
Chevrolet Beretta (Peerless) | Cars and Concepts | 145 | engine | GTU | 66 | no time | |
| DNF | 14 | Chip Robinson (USA)
Al Holbert (USA) Jack Baldwin (USA)^ Derek Bell (GB)* |
Porsche 962 (Holbert) HR1 | Al Holbert | 142 | engine | GTP | 1 | 1:55.846 | |
| DNF | 26 | Richard McDill (USA)
Tom Juckette (USA) Bill McDill (USA) |
March-Pontiac 84G | Bill McDill | 142 | gearbox | GTP | 32 | 2:18.831 | |
| DNF | 97 | Claude Ballot-Lena (F)
Jean-Louis Ricci (F) Skeeter McKitterick (USA) |
Spice-Pontiac Fiero GTP | Paul Gentilozzi | 141 | ignition | GTP Lights | 25 | 2:15.582 | |
| DNF | 30 | Michael Roe (IRL)
Gianpiero Moretti (I) |
March-Buick 87G | Moretti/Dawson | 135 | engine | GTP | 13 | 2:07.204 | |
| DNF | 2 | Greg Pickett (USA)
Tommy Riggins (USA) John Jones (CDN)^ |
Chevrolet Corvette (Protofab) | Protofab | 126 | engine | GTO | 17 | 2:11.079 | |
| DNF | 4 | Jim Miller (USA)
Linda Ludemann (USA) Scott Schubot (USA) |
Spice-Buick SE88P | Schubot/Lunemann | 117 | engine | GTP Lights | 20 | 2:11.774 | |
| DNF | 06 | Bobby Brown (USA)
Billy Hagan (USA) Ron Nelson (USA) Dennis Chambers (USA)^ |
Tiga-Buick GT286 | Bobby Brown | 102 | axle | GTP Lights | 42 | 2:24.750 | |
| DNF | 68 | Luis Mendez (DR)
Kikos Fonseca (CR) Mike Bavaro (USA)^ |
Porsche 911 Carrera | Latino Racing | 100 | engine | GTU | 55 | 2:30.816 | |
| DNF | 98 | Dennis Aase (USA)
Chris Cord (USA) |
Toyota Celica (AAR) | Dan Gurney | 99 | engine | GTO | 23 | 2:14.680 | |
| DNF | 57 | Bill Bean (USA)
Gary Wonzer (USA) Mike Cooper (USA) Brian Cameron (USA)^ Jack Lewis (USA)^ Peter Argetsinger (USA)^ |
Lola-Mazda T616 | Gary Wonzer | 93 | GTP Lights | 64 | 2:34.097 | ||
| DNF | 41 | Luis Sereix (USA)
Daniel Urrutia (USA) |
Chevrolet Camaro (Howe) | Luis Sereix | 88 | differential | GTO | 53 | 2:29.912 | |
| DNF | 72 | Lon Bender (USA)
Albert Naon Jr (USA) |
Tiga Ford-Cosworth GC287 | Roy Baker | 81 | gearbox | GTP | 34 | 2:19.980 | |
| DNF | 39 | John Gunn (USA)
Gary Belcher (USA)^ |
Phoenix-Chevrolet JG2 2 | Phoenix | 63 | engine | GTP | 24 | 2:15.152 | |
| DNF | 47 | Richard Oakley (USA)
Doug Mills (USA) |
Mazda RX-7 | Richard Oakley | 37 | engine | GTU | 47 | 2:27.646 | |
| DNF | 60 | Martin Brundle (GB)
John Nielsen (DK)^ Raul Boesel (BR)^ |
Jaguar XJR-9 (Advanced) 388 | Tom Walkinshaw | 31 | engine | GTP | 3 | 1:55.985 | |
| DNF | 07 | Dorsey Schroeder (USA)
Bruce MacInnes (USA) |
Dodge Daytona (Showket) | Kal Showket | 25 | engine | GTU | 65 | 2:35.409 | |
| DNF | 15 | Jim Rothbarth (USA)
Bernard Jourdain (MEX)^ |
Porsche 962 (Holbert) HR2 | John Kalagian | 21 | accident | GTP | 10 | 2:04.580 | |
| DNF | 99 | Willy T. Ribbs (USA)
Juan Manuel Fangio II (RA) |
Toyota Celica (AAR) | Dan Gurney | 16 | engine | GTO | 21 | 2:12.601 | |
| DNF | 31 | Tom Gloy (USA)
Didier Theys (B)^ Steve Phillips (USA)^ Jeff Andretti (USA)* |
March-Buick 86G | Moretti/Dowson | 2 | oil pressure | GTP | 11 | 2:04.781 | |
| DNF | 48 | Chip Mead (USA)
Lorenzo Lamas (USA)^ Tim McAdam (USA)^ Jack Newsum (USA)^ John Higgins (USA)^ |
Fabcar-Porsche | Lorenzo Lamas | 2 | fire | GTP Lights | 36 | 2:21.575 | |
| DNS | 58 | Paul Goral (USA)
Brian Cameron (USA) Gary Wonzer (USA) Peter Argetsinger (USA) |
Lola-Mazda T616 | Gary Wonzer | GTP Lights | 57 | 2:31.106 | |||
| DNQ | 66 | Chaunce Wallace (USA)
Warren Newell (USA) |
Chevrolet Camaro (Riggins) | Chaunce Wallace | GTO | 2:40.197 | ||||
| DNQ | 46 | Mike Guido (USA)
Michael Graham (USA) Alan Crouch (USA) |
BMW 325 | Red Line Racing | GTU | 2:44.966 | ||||
| DNS | 56 | Karl Durkheimer (USA)
Jim Torres (USA) |
Porsche 911 Carrera (Durkheimer) | Karl Durkheimer | GTU | 2:28.179 | ||||
| DNS | 96 | Phil Mahre (USA)
Steve Mahre (USA) Mario Hytten (CH)* |
URD-BMW C82 | Mahre Brothers | GTP Lights | 2:35.820 | ||||
| DNS | 45 | Mark Kennedy (USA)
Karl Keck (USA) Dave Fuller (USA)* |
Chevrolet Corvette (Pratt) | Karl Keck | GTO | 2:36.837 | ||||
| DNS | 28 | Russ Church (USA)
E.J.Generotti (USA) Guy W. Church (USA) |
Mazda RX-7 | Guy W. Church | GTU | 2:45.255 | ||||
| DNS | 51 | Bob Copeman (USA)
Joe Philips (USA) Felix Mancinez (USA)* |
Porsche 911 Carrera RSR | Herbert S. Parks | fatal accident | GTU | no time | |||
| DNA | 3 | Massimo Sigala (I) | Porsche 962 | Walter Brun | GTP | |||||
| DMA | 8 | Tim McAdam (USA)
Chip Mead (SUA) |
Fabcar-Chevrolet | Fabcar | GTP |
| Winning Time: 12h00m52.782, 108.782 mph/175.067 kph |
| Fastest Lap: Price Cobb #16 (Porsche 962), 2m00.716, 122.569 mph/197.255 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) |