| Pos. | No. | Driver / Nationality | Car | Entrant | Laps | Time/retired | Grp Pos | Group | Grid | Qual Time |
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 14 | Chip Robinson (USA)
Derek Bell (GB) Al Unser Jr (USA) Al Holbert (USA) |
Porsche 962 103 | Al Holbert | 753 | 24h01m14.670 | 1 | GTP | 10 | 1:45.296 |
| 2 | 3 | Oscar Larrauri (RA)
Gianfranco Brancatelli (I) Massimo Sigala (I) Frank Jelinski (D)* |
Porsche 962 128 | Walter Brun | 745 | 2 | GTP | 9 | 1:44.795 | |
| 3 | 16 | Price Cobb (USA)
Rob Dyson (USA) Vern Schuppan (AUS) |
Porsche 962 120 | Rob Dyson | 742 | 3 | GTP | 4 | 1:42.773 | |
| NRF | 1 | A.J.Foyt (USA)
Al Unser Sr (USA) Danny Sullivan (USA) |
Porsche 962 (Holbert-Fabcar) HR4 | A.J.Foyt | 723 | engine | 4 | GTP | 8 | 1:44.465 |
| 5 | 10 | John Hotchkis Sr (USA)
Jim Adams (USA) John Hotchkis Jr (USA) |
Porsche 962 (Holbert-Fabcar) HR3F | John Hotchkis Sr | 719 | 5 | GTP | 5 | 1:43.304 | |
| 6 | 5 | Hans-Joachim Stuck Jr (D)
James Weaver (GB) Bob Akin (USA) |
Porsche 962 113 | Bob Akin | 700 | 6 | GTP | 12 | 1:45.677 | |
| 7 | 11 | Tom Gloy (USA)
Bill Elliott (USA) Lyn St. James (USA) Scott Pruett (USA) |
Ford Mustang (Roush) | Jack Roush | 685 | 1 | GTO | 18 | 1:51.533 | |
| 8 | 98 | Chris Cord (USA)
Steve Millen (NZ) Dennis Aase (USA)* |
Toyota Celica (AAR) | Dan Gurney | 681 | 2 | GTO | 24 | 1:53.493 | |
| 9 | 22 | Deborah Gregg (USA)
Bobby Akin Jr (USA) Scott Pruett (USA) Scott Goodyear (USA) Bruce Jenner (USA)* Kim Baker (USA)* Gary Baker (USA)* |
Ford Mustang (Roush) | Jack Roush | 649 | 3 | GTO | 66 | no time | |
| 10 | 71 | Amos Johnson (USA)
Dennis Shaw (USA) Bob Lazier (USA) |
Mazda RX-7 (Highball) | Amos Johnson | 642 | 1 | GTU | 49 | 2:04.678 | |
| 11 | 01 | Bob Earl (USA)
Don Bell (USA) Jeff Kline (USA) Cor Euser (NL)* |
Spice-Pontiac Fiero GTP | Spice Engineering | 630 | 1 | GTP Lights | 14 | 1:49.719 | |
| 12 | 42 | Howard Cherry (USA)
John Higgins (USA) James King (USA) Chip Mead (USA) |
Fabcar-Porsche | John Higgins | 626 | 2 | GTP Lights | 42 | 2:01.813 | |
| 13 | 82 | Mike Mees (USA)
Dick Grer (USA) John Finger (USA) |
Mazda RX-7 (Chassis Dynamics) | Dick Greer | 622 | 2 | GTU | 60 | 2:11.759 | |
| 14 | 36 | John Grooms (USA)
Tom Bagley (USA) Frank Jellinek Jr (USA) Augie Pabst (USA) |
Lola-Badger Mazda BB | Frank Jellinek Jr | 621 | 3 | GTP Lights | 40 | 2:01.263 | |
| 15 | 30 | Buz McCall (USA)
Walt Bohren (USA) Paul Dallenbach (USA) Tom Sheehy (USA)* |
Chevrolet Camaro (Timmons) | Buz McCall | 616 | 4 | GTO | 29 | 1:56.629 | |
| 16 | 19 | Jim Brown (USA)
Scott Schubot (USA) Linda Ludemann (USA) |
Tiga-Mazda GT285 | Schubot/Ludemann | 597 | 4 | GTP Lights | 39 | 2:00.499 | |
| NRF | 99 | Ricky Rudd (USA)
Jerrill Rice (USA) Juan Manuel Fangio II (RA) |
Toyota Celica (AAR) | Dan Gurney | 591 | engine | 5 | GTO | 25 | 1:53.607 |
| 18 | 09 | Peter Uria (USA)
Larry Figaro (USA) John Hayes-Harlow (GB) Kyle Rathbun (USA) |
Porsche 911 Carrera RSR | Peter Uria | 580 | 3 | GTU | 51 | 2:04.816 | |
| 19 | 38 | Roger Mandeville (USA)
Kelly Marsh (USA) Danny Smith (USA) |
Mazda RX-7 (Chassis Dynamics) | Roger Mandeville | 572 | 6 | GTO | 26 | 1:54.364 | |
| 20 | 33 | Bruce Jenner (USA)
Todd Morici (USA) Gary Baker (USA) Pancho Carter (USA)* Gene Hackman (USA)* |
Ford Mustang (Roush) | Jack Roush | 571 | 7 | GTO | 27 | 1:54.948 | |
| 21 | 27 | David Cowart (USA)
Kenper Miller (USA) Jim Fowells (USA) Mike Meyer (USA)^ |
Argo-Mazda JM19 | MSB Racing | 566 | 5 | GTP Lights | 67 | no time | |
| 22 | 66 | Charles Morgan (USA)
Chris Gennone (USA) Jim Rothbarth (USA) Mike Meyer (USA)^ |
Royale-Mazda RP40 | RM Racing | 554 | 6 | GTP Lights | 32 | 1:57.812 | |
| DNF | 75 | Max Jones (USA)
Bart Kendall (USA) Tommy Kendall (USA) |
Mazda RX-7 (Fabcar) | Clayton Cunningham | 522 | engine | GTU | 44 | 2:02.467 | |
| DNF | 21 | Robert Peters (CDN)
Tom Nehl (USA) Kent Painter (USA) Mike Laws (USA)* |
Chevrolet Camaro (Riggins) | Auriga Racing | 520 | engine | GTO | 53 | 2:05.145 | |
| NC | 20 | Tom Juckette (USA)
Bill McDill (USA) Mike Laws (USA) Richard McDill (USA)^ |
Chevrolet Camaro (Dillon) | Bill McDill | 520 | 9 | GTO | 41 | 2:01.376 | |
| NC | 26 | Ken Bupp (USA)
Guy W. Church (USA) Del Russo Taylor (USA) Mike Hackney (USA) |
Pontiac Firebird (Python) | Bob Lee | 510 | 10 | GTO | 52 | 2:05.139 | |
| NC | 68 | Steve DePuyster (USA)
Mike Jocelyn (USA) Jim Kurz (USA) Bob Schader (USA) |
Mazda RX-7 | Bob Schader | 503 | 5 | GTU | 58 | 2:09.127 | |
| NC | 78 | Dennis Chambers (USA)
Mike Meyer (USA) Tom Burdsall (USA) Joe Hill (USA)* Lance Jones (USA)* Matt Mnich (USA)* |
Mazda RX-7 | Dennis Chambers | 498 | 6 | GTU | 62 | 2:13.555 | |
| NC | 29 | Gene Felton (USA)
Oma Kimbrough (USA) Hoyt Overbagh (USA) Lee Perkinson (USA) |
Chevrolet Camaro (Stock Car Products) | Hoyt Overbagh | 470 | GTO | 34 | 1:59.353 | ||
| NC | 00 | Charles Slater (USA)
Ernie Senator (USA) Davide Duttinger (USA) |
Porsche 911 Carrera RSR | S Squared Engineering | 414 | GTU | 61 | 2:11.975 | ||
| DNF | 28 | Greg Pickett (USA)
Darrell Waltrip (USA) Terry Labonte (USA) Tommy Riggins (USA) |
Chevrolet Camaro (Protofab) | Protofab | 410 | differential | GTO | 15 | 1:50.792 | |
| DNF | 96 | Thomas Hessert (USA)
Keith Rinzler (USA) Eduardo Dibos Jr (PE) William Koll (USA)* |
Tiga-Mazda GT287 | Thomas Hessert | 409 | gearbox | GTP Lights | 43 | 2:02.455 | |
| DNF | 24 | Craig A. Rubright (USA)
Garrett Jenkins (USA) Roy Newsome (USA) |
Chevrolet Corvette | Craig A. Rubright | 404 | GTO | 55 | 2:06.202 | ||
| DNF | 6 | Wally Dallenbach Jr (USA)
John Jones (CDN) Tommy Riggins (USA) Greg Pickett (USA) |
Chevrolet Camaro (Protofab) | Protofab | 402 | engine | GTO | 19 | 1:52.127 | |
| DNF | 47 | Richard Oakley (USA)
Chaunce Wallace (USA) Doug Mills (USA) Tom Burdsall (USA)^ |
Mazda RX-7 | Chaunce Wallace | 386 | engine | GTU | 68 | no time | |
| DNF | 51 | Costas Los (GR)
John Schneider (USA) David Andrews (GB) |
Tiga Ford-Cosworth CC086 | Roy Baker | 354 | gearbox | GTP | 59 | 2:09.142 | |
| DNF | 63 | Jim Downing (USA)
John O'Steen (USA) John Maffucci (USA) |
Argo-Mazda JM19 | Jim Downing | 352 | engine | GTP Lights | 30 | 1:56.726 | |
| NC | 32 | Mark Kennedy (USA)
Karl Keck (USA) Mark Montgomery (USA) Dave Fuller (USA) |
Chevrolet Corvette (Pratt) | Karl Keck | 346 | GTO | 46 | 2:02.768 | ||
| DNF | 87 | Tommy Morrison (USA)
Richard Ceppos (USA) Don Knowles (USA) Stuart Hayner (USA) |
Chevrolet Corvette | Tommy Morrison | 337 | engine | GTO | 65 | 4:54.860 | |
| DNF | 7 | Whitney Ganz (USA)
David Hobbs (GB) Gianpiero Moretti (I) |
Ford Probe GTP (Zakspeed) | Zakowski/Moretti | 328 | engine | GTP | 11 | 1:45.657 | |
| NC | 83 | Tom Gaffney (USA)
Paul Reisman (USA) Richard Stone (USA) Bob Hebert (USA) |
Pontiac Firebird (Watson) | Charlie Gibson | 316 | GTO | 47 | 2:03.378 | ||
| NC | 08 | Vance Swifts (CDN)
John Drew (USA) Dean Hall (USA) Paul Romano (USA) |
Mazda RX-7 | Simms/Romano | 298 | GTU | 57 | 2:06.888 | ||
| DNF | 8 | Brian Redman (GB)
Chris Kneifel (USA) Elliott Forbes-Robinson (USA) Kees Nierop (CDN)^ |
Porsche 962 (Holbert-Fabcar) 123/HR6 | Primus Motorsports | 283 | engine | GTP | 6 | 1:43.449 | |
| DNF | 90 | Andy Petery (USA)
Les Delano (USA) Craig Carter (USA) Tommy Riggins (USA)* |
Buick Somerset (Peerless) | Les Delano | 281 | engine | GTO | 23 | 1:53.217 | |
| DNF | 17 | Al Bacon (USA)
Rod Millen (NZ) Bob Reed (USA) |
Mazda RX-7 (Chassis Dynamics) | Al Bacon | 277 | engine | GTU | 48 | 2:03.641 | |
| DNF | 89 | Steve Durst (USA)
Michael Brockman (USA) Tony Belcher (USA) Mark Abel (USA) |
Spice-Pontiac Fiero GTP | Durst/Brockman | 273 | engine | GTP Lights | 17 | 1:51.468 | |
| DNF | 76 | Jack Baldwin (USA)
Eppie Wietzes (CDN) John Lloyd (USA)^ |
Chevrolet Camaro (Peerless) | Rick Hendrick | 261 | engine | GTO | 21 | 1:52.446 | |
| DNF | 52 | Sarel van der Merwe (ZA)
Doc Bundy (USA) |
Chevrolet Corvette GTP-T710 (Lola) HU8610/01 | Rick Hendrick | 255 | engine | GTP | 3 | 1:42.207 | |
| DNF | 80 | Roger Andrey (USA)
Angelo Pallavicini (CH) Uli Bieri (CDN) |
Alba-Ferrari AR2 | Gaston Andrey | 246 | engine | GTP Lights | 36 | 1:59.664 | |
| DNF | 25 | Jerry Brassfield (USA)
Michael Roe (IRL) John Bauer (USA) Norton Gaston (USA) |
March-Chevrolet 85G | DeAtley Motorsports | 245 | electrics | GTP | 16 | 1:51.347 | |
| DNF | 31 | Stanley Dickins (S)
Frank Jelinski (D) Gary Robinson (USA) Greg Hobbs (GB) |
Gebhardt-BMW JC853 | Alf Gebhardt | 236 | engine | GTP Lights | 35 | 1:59.518 | |
| DNF | 64 | Ken Johnson (USA)
Maurice Hassey (USA) Lanny Hester (USA) |
Ford Mustang (Roush) | Raintree Corporation | 225 | fire | GTO | 28 | 1:56.352 | |
| DNF | 55 | Nort Northam (uSA)
Scott Lagasse (USA) Dennis Krueger (USA) Greg Walker (USA)^ |
Chevrolet Corvette | Jack Wilson | 223 | engine | GTO | 69 | no time | |
| DNF | 44 | Bob Tullius (USA)
Hurley Haywood (USA) John Mortn (USA) |
Jaguar XJR-7 (Fabcar) | Bob Tullius | 216 | engine | GTP | 7 | 1:43.910 | |
| DNF | 92 | Lance Van Every (USA)
Rusty Bond (USA) Ash Tisdelle (USA) |
Chevrolet Camaro (Riggins) | Lance Van Avery | 202 | accident | GTO | 33 | 1:58.515 | |
| DNF | 86 | Klaus Ludwig (D)
Jochen Mass (D) Bruce Leven (USA)* |
Porsche 962 121 | Bruce Leven | 144 | chassis | GTP | 1 | 1:41.005 | |
| DNF | 77 | Bobby Archer (USA)
Tomy Archer (USA) Robert Lappalainen (SF)^ Leo Franchi (USA)^ |
Chevrolet Camaro (Protofab) | Brooks Fryberger | 121 | engine | GTO | 22 | 1:52.901 | |
| DNF | 4 | Scott Pruett (USA)
Pete Halsmer (USA) Tom Gloy (USA) |
Ford Mustang Probe II (Roush) | Jack Roush | 120 | suspension | GTP | 13 | 1:46.183 | |
| DNF | 23 | George Petrilak (USA)
Graham Duxbury (ZA) Bill Jacobson (USA) Helmut Silberberger (USA)^ David Rosenberg (USA)* |
Argo-Buick JM16 | Motion Promotion | 119 | gearbox | GTP Lights | 38 | 2:00.402 | |
| DNF | 9 | Steve Phillips (USA)
Howard Katz (USA) Ron Nelson (USA) Duncan Bain (GB)* |
Tiga-Mazda GT285 | Mike Gue | 111 | engine | GTP Lights | 31 | 1:57.488 | |
| DNF | 13 | Keith Lawhorn (USA)
Vince Gimondo (USA) Ken Grostic (USA) |
Oldsmobile Calais | Vince Gimondo | 104 | chassis | GTO | 54 | 2:05.745 | |
| DNF | 67 | Bob Wollek (F)
Jim Busby (USA) Darin Brassfield (USA) |
Porsche 962 119 | Jim Busby | 89 | engine | GTP | 2 | 1:41.310 | |
| DNF | 50 | Paul Canary (USA)
Jerry WInston (USA) Phil Currin (USA) Richard Bryan (USA)^ Benton Bryan (USA)^ |
Chevrolet Corvette | Paul Canary | 88 | engine | GTO | 56 | 2:06.882 | |
| DNF | 54 | Karl Durkheimer (USA)
Bill Auberlen (USA) Dieter Oest (USA) Gary Auberlen (USA)^ |
Porsche 911 | Gary Auberlen | 87 | engine | GTU | 50 | 2:04.678 | |
| DNF | 88 | John Heinricy (USA)
Bob McConnell (USA) Bill Adam (CDN) Bobby Carradine (USA)^ |
Chevrolet Corvette | Tommy Morrison | 77 | engine | GTO | 64 | 4:28.150 | |
| DNF | 74 | Paul Gentilozzi (USA)
Irv Hoerr (USA)^ Ted Boody (USA)^ |
Oldsmobile Toronado (Rocketsports) | Paul Gentilozzi | 52 | accident | GTO | 20 | 1:52.345 | |
| DNF | 43 | Tom Pumpelly (USA)
Robert Overby (USA) Tim McAdam (USA)^ Thomas Schwietz (USA)^ |
Fabcar-Porsche | John Higgins | 42 | oil leak | GTP Lights | 45 | 2:02.703 | |
| DNF | 41 | Hugo Gralia (USA)
Dennis Dobkin (USA) Carlos Padrera (USA)^ Secondo Tagliero (USA)^ |
Mazda RX-7 | Hugo Gralia | 30 | oil pump | GTU | 63 | 2:25.337 | |
| DNF | 79 | Paul Lewis (USA)
Skeeter McKitterick (USA)^ Tom Winters (USA)^ |
Alba-Chevrolet AR5 | Paul Gentilozzi | 28 | engine | GTP Lights | 37 | 1:59.668 | |
| DNA | 18 | Henning Hagenbauer (D)
Hans Lotec (D) |
BMW M1 | Hans Lotec | GTO | |||||
| DNA | 45 | Jim Crawford (GB)
Tommy Byrne (USA) |
March-Buick 85G Hawk | Phil Conte | GTP | |||||
| DNA | 72 | Robin Donovan (GB) | Bardon-Saab DB2 | John Bartlett | GTP | |||||
| DNA | 97 | Jack Baldwin (USA)
John Lloyd (USA) Eppie Wietzes (CDN) |
Chevrolet Camaro (Peerless) | Rick Hendrick | GTO |
| Winning Time: 24h01m14.670, 111.599 mph/179.600 kph |
| Fastest Lap: Oscar Larrauri #3 (Porsche 962), 1m43.070, 124.343 mph/200.110 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) |