| 1st | 02 | Dixon / Wheldon / Mears | Riley Mk XI Lexus | Target Chip Ganassi with Felix Sabates | 734 | 24:00:40.031 | 175.1385 | | 1st | DP | 1:45.9020 | 34 |
| 2nd | 60 | Negri / Patterson / Allmendinger / Wilson | Riley Mk XI Lexus | Michael Shank Racing | 733 | 24:01:33.585 | 174.7925 | | 2nd | DP | 1:45.7400 | 136 |
| 3rd | 23 | Long / Rockenfeller / Luhr | Crawford DP03 Porsche | Alex Job Racing/Emory Motorsports | 731 | 24:00:43.496 | 174.4159 | | 3rd | DP | 1:44.2990 | 295 |
| 4th | 58 | Donohue / Law / Maassen | Fabcar FDSC/03 Porsche | Red Bull/Brumos Porsche | 730 | 24:01:45.973 | 174.0522 | | 4th | DP | 1:46.5560 | 461 |
| 5th | 75 | Krohn / Jönsson / Bergmeister / Braun | Riley Mk XI Pontiac | Krohn Racing | 717 | 24:00:40.207 | 171.0829 | | 5th | DP | 1:47.4010 | 466 |
| 6th | 19 | Gidley / McDowell / Barron | Crawford DP03 Ford | Playboy/Uniden Racing | 716 | 24:00:44.723 | 170.8351 | | 6th | DP | 1:45.6670 | 588 |
| 7th | 77 | Barber / Borcheller / Jourdain / Brix | Doran JE4 Ford | Feeds The Need/Doran Racing | 703 | 24:01:28.263 | 167.6486 | | 7th | DP | 1:46.9060 | 615 |
| 8th | 7 | Franchitti / Duno / Franchitti / McGarrity | Riley Mk XI Pontiac | CITGO Racing by SAMAX | 695 | 24:00:57.812 | 165.7995 | | 8th | DP | 1:46.3890 | 319 |
| 9th | 36 | Pobst / Pumpelly / Levitas / Baas | Porsche 996 GT3 Cup | TPC Racing | 691 | 24:02:16.339 | 164.6954 | | 1st | GT | 1:54.8040 | 561 |
| 10th | 65 | Lally / Bunting / Valentine / O'Connell | Pontiac GTO.R | TRG | 688 | 24:03:11.576 | 163.8763 | | 2nd | GT | 1:54.3800 | 511 |
| 11th | 28 | Valiante / Finlay / Herta / Rice | Crawford DP03 Ford | Finlay Motorsports | 684 | 24:00:48.453 | 163.1923 | | 9th | DP | 1:46.1650 | 518 |
| 12th | 82 | Werner / Peter / Quester / Riccitelli | Porsche 997 GT3 Cup | Farnbacher Racing/Farnbacher Loles | 683 | 24:02:37.329 | 162.7497 | | 3rd | GT | 1:54.0470 | 153 |
| 13th | 66 | Ortelli / Nearn / Sauvage / Johnson | Porsche 997 GT3 Cup | TRG | 678 | 24:03:03.966 | 161.5073 | | 4th | GT | 1:55.7180 | 373 |
| 14th | 16 | Dyson / Dyson / Gavin / Smith | Crawford DP03 Pontiac | Howard - Boss Motorsports | 675 | 24:01:16.856 | 160.9923 | | 10th | DP | 1:46.9890 | 219 |
| 15th | 83 | Farnbacher / Fitzgerald / Ehret / Basseng | Porsche 997 GT3 Cup | Farnbacher Loles/Orbit Racing | 671 | 24:02:12.140 | 159.9366 | | 5th | GT | 1:54.7620 | 245 |
| 16th | 72 | Henzler / Liddell / Van Overbeek / Rahal | Porsche 997 GT3 Cup | Tafel Racing | 670 | 24:01:49.005 | 159.7403 | | 6th | GT | 1:53.8660 | 264 |
| 17th | 39 | Fittipaldi / Cheever, Jr. / Carpentier | Crawford DP03 Lexus | Cheever Racing | 669 | 21:58:10.896 | 174.4625 | Engine | 11th | DP | 1:46.2300 | 49 |
| 18th | 17 | Mowlem / Arnold / Sellers / Shep / Seyffarth | Porsche 997 GT3 Cup | SAMAX | 663 | 24:02:21.220 | 158.0134 | | 7th | GT | 1:54.3470 | 399 |
| 19th | 00 | Zitza / Thomasson / Lewis, Jr. / Wheeler | Porsche 996 GT3 Cup | TZ Motorsports | 655 | 24:01:47.403 | 156.1675 | | 8th | GT | 1:57.9400 | 184 |
| 20th | 41 | Nonnamaker / Nonnamaker / Nonnamaker / Gonzalez, Jr. | Porsche 996 GT3 Cup | Team Sahlen | 653 | 24:04:02.748 | 155.4465 | | 9th | GT | 1:57.8090 | 35 |
| 21st | 22 | Dumoulin / Longhi / Assentato / Pechnik / Thornton | Porsche 996 GT3 Cup | Fiorano Racing | 651 | 24:01:15.304 | 155.2711 | | 10th | GT | 1:55.2360 | 431 |
| 22nd | 51 | Johansson / Hughes / Erdos | Crawford DP03 Lexus | Cheever Racing | 645 | 24:02:29.110 | 153.7085 | | 12th | DP | 1:46.7640 | 20 |
| 23rd | 93 | Ave / Stewart / Stewart / Gilbert / Stewart | Porsche 996 GT3 Cup | TPC Racing | 636 | 24:00:56.564 | 151.7257 | | 11th | GT | 1:56.8100 | 354 |
| 24th | 99 | Gurney / Stallings / Vasser / Moran, Jr. | Riley Mk XI Pontiac | Gainsco/Blackhawk Racing | 635 | 24:02:24.655 | 151.3331 | | 13th | DP | 1:46.7150 | 548 |
| 25th | 74 | Davis / Espenlaub / Lux / Tafel / Cawley | Porsche 997 GT3 Cup | Tafel Racing | 634 | 24:05:55.120 | 150.7279 | | 12th | GT | 1:55.1360 | 252 |
| 26th | 64 | Edwards / Collins / Pilgrim / Magnussen | Pontiac GTO.R | TRG | 633 | 24:03:12.318 | 150.7730 | | 13th | GT | 1:54.3690 | 108 |
| 27th | 67 | Flanagan / Kroczek / Keith / Bullock | Porsche 996 GT3 Cup | TRG | 625 | 24:03:05.634 | 148.8804 | | 14th | GT | 1:59.2240 | 206 |
| 28th | 46 | Mason / Baughman / Connolly / Del Vecchio / Collyer | Chevrolet Corvette | Michael Baughman Racing | 623 | 24:02:32.347 | 148.4604 | | 15th | GT | 2:01.5570 | 32 |
| 29th | 40 | Fellows / Ruhlman / Bingham / Bell | Riley Mk XI Pontiac | Derhaag Motorsports | 620 | 24:01:41.618 | 147.8327 | | 14th | DP | 1:47.7440 | 491 |
| 30th | 4 | Wallace / Leitzinger / Stewart | Crawford DP03 Pontiac | Howard - Boss Motorsports | 593 | 24:00:45.417 | 141.4855 | | 15th | DP | 1:47.2840 | 155 |
| 31st | 05 | Auberlen / Alhadeff / Milner / Marks / Sigal | BMW M3 E46 | Sigalsport BMW | 592 | 24:02:02.650 | 141.1218 | | 16th | GT | 1:55.8650 | 36 |
| 32nd | 81 | Pew / Marshall / Prewitt / Marshall / McCrackin | Porsche 996 GT3 Cup | Synergy Racing | 589 | 24:02:21.873 | 140.3750 | | 17th | GT | 2:01.0880 | 490 |
| 33rd | 06 | Archer / Reese / Oasis / Crescentini | Chevrolet Corvette | Banner Racing | 589 | 24:03:14.226 | 140.2897 | | 18th | GT | 1:57.3740 | 38 |
| 34th | 5 | Dayton / Knoop / DeVries / Matthews / Gue | Crawford DP03 Ford | Essex Racing | 585 | 20:23:36.217 | 164.3478 | Accident | 16th | DP | 1:47.5250 | 220 |
| 35th | 09 | Goad / Primat / Labonte / Oberto | Crawford DP03 Pontiac | Spirit of Daytona Racing | 572 | 22:07:50.370 | 148.0822 | Engine, mostly overheating | 17th | DP | 1:47.9540 | 40 |
| 36th | 59 | France / Barbosa / Christopher / Haywood | Fabcar FDSC/03 Porsche | Brumos Racing | 559 | 22:06:57.227 | 144.8120 | Accident | 18th | DP | 1:46.4480 | 319 |
| 37th | 68 | Pace / Greist / Lowe | Porsche 996 GT3 Cup | TRG | 555 | 24:03:04.893 | 132.2060 | | 19th | GT | 1:57.2630 | 219 |
| 38th | 3 | Lewis / Szekeres / LaJoie / Burgess | Riley Mk XI BMW | Southard Motorsports | 548 | 24:01:01.347 | 130.7254 | | 19th | DP | 1:47.2900 | 373 |
| 39th | 01 | Pruett / Diaz / Papis | Riley Mk XI Lexus | CompUSA Chip Ganassi with Felix Sabates | 510 | 17:02:13.334 | 171.5046 | Oil pump | 20th | DP | 1:45.5750 | 466 |
| 40th | 87 | Gaylord / Hill / Hill / Diefenbach | Porsche 997 GT3 Cup | Synergy Racing | 503 | 24:02:23.635 | 119.8768 | | 20th | GT | 1:58.3050 | 8 |
| 41st | 43 | Allen / Hennessy / Michaelian / Matos / Nonnamaker | Porsche 996 GT3 Cup | Team Sahlen | 435 | 24:01:19.213 | 103.7480 | | 21st | GT | 1:58.5690 | 81 |
| 42nd | 11 | Tuttle / Petty / Said | Riley Mk XI BMW | Tuttle Team Racing/SAMAX | 415 | 15:41:40.570 | 151.4940 | Oil pressure | 21st | DP | 1:47.0100 | 101 |
| 43rd | 84 | Dallenbach, Jr. / Robinson / Dallenbach / Brassfield | Riley Mk XI Pontiac | Robinson Racing | 413 | 15:29:38.045 | 152.7171 | Accident | 22nd | DP | 1:47.2700 | 49 |
| 44th | 89 | Dalziel / Fogarty / Figge / Empringham | Riley Mk XI Pontiac | Pacific Coast Motorsports | 301 | 14:34:28.592 | 118.3222 | Overheating | 23rd | DP | 1:46.0240 | 34 |
| 45th | 80 | Murry / Keen / Stanton / Pompidou | Porsche 996 GT3 Cup | Synergy Racing | 299 | 24:02:20.599 | 71.2617 | | 22nd | GT | 1:55.6240 | 125 |
| 46th | 69 | Vargo / Vargo / Herrington / Refenning | Porsche 996 GT3 Cup | TRG | 287 | 11:01:48.690 | 149.0719 | Accident => rolled | 23rd | GT | 1:57.7480 | 60 |
| 47th | 70 | Tremblay / Haskell / Altenburg / Ham | Mazda RX-8 | SpeedSource | 284 | 10:15:40.994 | 158.5670 | Hole in radiator | 24th | GT | 1:54.4770 | 193 |
| 48th | 71 | Lacey / Martini / Wilkins / Wilkins / Mowlem | Porsche 997 GT3 Cup | SAMAX/Doncaster Racing | 278 | 10:09:06.802 | 156.8901 | Broken wheel studs | 25th | GT | 1:55.6670 | 200 |
| 49th | 57 | Rice / Riggins / Stevenson / Trenery / Cicero | Chevrolet Corvette | Stevenson Motorsports | 278 | 11:30:37.730 | 138.3730 | Excessive oil consumption | 26th | GT | 1:56.7980 | 66 |
| 50th | 2 | Lammers / Patrick / McNish / Wallace | Crawford DP03 Pontiac | Howard - Boss Motorsports | 273 | 10:09:29.901 | 153.9708 | Overheating | 24th | DP | 1:46.4430 | 147 |
| 51st | 8 | Frisselle / Frisselle / Field / Huisman | Doran JE4 Porsche | Synergy Racing | 206 | 6:59:20.497 | 168.8685 | Engine | 25th | DP | 1:46.4930 | 47 |
| 52nd | 12 | Fernandez / Haberfeld / Sharp | Riley Mk XI Pontiac | Lowe's Fernandez Racing | 187 | 7:01:50.155 | 152.3872 | Engine, also suspension | 26th | DP | 1:46.9650 | 182 |
| 53rd | 48 | Seiler / Dubler / Hauser / DeFontes / Thiel | Chevrolet Corvette | WTF Engineering | 174 | 7:38:30.091 | 130.4550 | Piston | 27th | GT | 2:03.0820 | 33 |
| 54th | 6 | Tracy / Mears, Jr. / Borkowski / Wilden | Riley Mk XI Lexus | Graydon Elliott Fusion Racing with MSR | 168 | 9:37:21.141 | 100.0272 | Overheating | 27th | DP | 1:45.9480 | 37 |
| 55th | 21 | Van Uitert / Connolly / de Quesada / Sutherland / Sutherland | BMW M3 E46 | Matt Connolly Motorsports | 159 | 8:03:22.267 | 113.0757 | Damage from earlier accident | 28th | GT | 1:57.2660 | 32 |
| 56th | 78 | Zacharias / Bourdais / Boesel | Doran JE4 Ford | Doran Racing | 156 | 5:52:15.220 | 152.2359 | Electrical | 28th | DP | 1:47.3780 | 44 |
| 57th | 10 | Taylor / Collard / Angelelli / Briscoe | Riley Mk XI Pontiac | SunTrust Racing | 123 | 4:06:48.750 | 171.3114 | Accident | 29th | DP | 1:46.0030 | 49 |
| 58th | 52 | Bertuzzi / Monzón / McCormick / Baron | Ferrari 360 Modena Challenge | Mastercar | 118 | 8:02:30.111 | 84.0689 | Hit in rear, repaired--hit in rear again, gave up | 29th | GT | 1:58.2670 | 34 |
| 59th | 15 | Friedman / Small / McGehee / Martin / Herring | Porsche 996 GT3 Cup | Autometrics Motorsports | 104 | 3:54:23.347 | 152.5272 | Flywheel | 30th | GT | 1:58.5530 | 23 |
| 60th | 55 | Arnold / Miller / Koselke / Poscente / Montgomery | Chevrolet Corvette | ASC Motorsports | 103 | 6:42:54.799 | 87.8766 | Engine and accident damage | 31st | GT | 1:58.0840 | 60 |
| 61st | 24 | O'Shaughnessy / Cotter / Malloy / Shalit / Johnson | BMW M3 E46 | Matt Connolly Motorsports | 101 | 4:06:44.491 | 140.7114 | Accident | 32nd | GT | 2:00.9500 | 13 |
| 62nd | 63 | Spencer / Spencer / Mandeville / Grupp / Drummond | Mazda RX-8 | Team Spencer Motorsports | 101 | 5:24:21.498 | 107.0407 | Rear upper arm broken | 33rd | GT | 1:58.0810 | 31 |
| 63rd | 08 | Goldin / Goldin / Finlay / Richards / Thiel | Mazda RX-8 | Goldin Brothers Racing | 48 | 1:57:33.405 | 140.3605 | Differential shaft sheared | 34th | GT | 2:01.2110 | 7 |
| 64th | 04 | Sigal / MacLeod / Konôpka / Rosser | BMW M3 E46 | Sigalsport BMW | 34 | 1:25:56.136 | 136.0057 | Valves | 35th | GT | 2:00.2140 | 3 |
| 65th | 86 | Kitch / Pennington / Gagne / Pallis | Porsche 997 GT3 Cup | Synergy Racing | 17 | 6:27:23.258 | 15.0860 | Overheating, blown engine | 36th | GT | 2:02.0480 | 8 |
| 66th | 50 | Zogaib / James / Nastasi / Gleason | Crawford DP03 Ford | Blackforest Motorsports | 5 | 9:33.223 | 179.9070 | Cam chain | 30th | DP | 1:49.6220 | 3 |