| 1st | 40 | Bell / Wilden / Bell / Gregg | Chevrolet Corvette C5 | Derhaag Motorsports | 1:49.394 | 1:49.3940 | 1:52.7100 | 1:53.4280 | 1:57.3110 |
| 2nd | 48 | Riggins / Machavern / *Lepage / *Lagasse | Ford Mustang | Heritage Motorsports | 1:50.163 | 1:50.1630 | 1:54.0910 | 1:54.7880 | 1:57.1190 |
| 3rd | 58 | Donohue / Borkowski / Pobst / Bye | Fabcar FDSC/03 Porsche | Brumos Porsche | 1:50.176 | 1:50.7750 | 1:51.5920 | 1:51.3660 | 1:50.1760 |
| 4th | 88 | Maxwell / Brabham / Empringham | Multimatic MDP1 Ford Focus | Multimatic | 1:50.512 | 1:50.5120 | 1:51.2240 | 1:51.8980 | 1:51.5600 |
| 5th | 59 | France / Haywood / Goodyear / Sharp | Fabcar FDSC/03 Porsche | Brumos Porsche | 1:50.618 | 1:52.8430 | 1:50.6180 | 1:52.5010 | 1:51.2530 |
| 6th | 7 | Konrad / Seiler / Dare / Yvon | Saleen S7-R | Konrad Motorsport | 1:50.650 | 1:52.9260 | 1:50.6500 | 1:53.5400 | 1:51.9340 |
| 7th | 05 | Conway / Metcalf / Carelli / Liniger | Chevrolet Corvette | RE/MAX Racing | 1:50.892 | 1:50.8920 | 1:54.0100 | 1:52.3980 | 1:59.0110 |
| 8th | 8 | Said / Law / Quester / Riccitelli | Picchio DP2 BMW | G&W Motorsports | 1:51.495 | no time | 1:51.4950 | 1:52.4100 | 1:52.7490 |
| 9th | 24 | Policand / Barbosa / Neugarten / Wallace | Mosler MT900R | Perspective Racing | 1:51.658 | 1:51.9440 | 1:51.6580 | 1:52.0960 | 1:55.3780 |
| 10th | 54 | Theys / Barber / Borcheller / Fittipaldi | Doran JE4 Chevrolet | Bell Motorsports | 1:51.689 | no time | 1:51.6890 | 2:02.5180 | 1:56.2850 |
| 11th | 46 | Morgan / Norick / Pace / Morgan | Chevrolet Corvette | Morgan-Dollar Motorsports | 1:52.145 | 1:52.4330 | 1:53.1360 | 1:52.1450 | 1:55.2280 |
| 12th | 66 | Buckler / Schrom / Bernhard / Bergmeister | Porsche 996 GT3-RS | The Racer's Group | 1:52.354 | 1:54.8650 | 1:52.3540 | 1:55.0150 | 1:53.3240 |
| 13th | 3 | Grala / Negri / Rehm / Cosmo | Fabcar FDSC/03 Toyota | Cegwa Sport | 1:52.530 | 1:55.9810 | 1:52.5300 | 1:54.3980 | 1:53.7170 |
| 14th | 43 | Baron / Hindery / Lieb / Petty | Porsche 996 GT3-RS | Orbit Racing | 1:52.661 | 1:53.3860 | 1:53.1940 | 1:52.6610 | 1:53.9860 |
| 15th | 98 | Maassen / Snow / Luhr / Schumacher | Porsche 996 GT3-RS | Schumacher Racing | 1:53.330 | 1:54.2640 | 1:54.3490 | 1:53.3300 | 1:53.9970 |
| 16th | 44 | Fitzgerald / Matos / Policastro / Policastro, Jr. | Porsche 996 GT3-RS | Orbit Racing | 1:53.721 | 1:56.4990 | 1:54.2970 | 1:56.4220 | 1:53.7210 |
| 17th | 83 | Murry / Standridge / Van Overbeek / Steranka | Porsche 996 GT3-R | Rennwerks Motorsports | 1:53.752 | 1:53.7520 | 1:54.3270 | 1:55.2570 | 1:54.4370 |
| 18th | 09 | Goad / Menard / Mears, Jr. / Briody | Chevrolet Corvette | Flis Motorsports | 1:53.907 | 1:53.9070 | 1:54.6340 | 1:55.3140 | 1:55.3040 |
| 19th | 19 | Puleo / Hitt / Dubler / Kennedy | Chevrolet Corvette | ACP Motorsports | 1:54.121 | 1:54.1210 | 1:54.2850 | 1:58.7160 | |
| 20th | 97 | Savoldi / Peroni / Francioni | Lucchini SR2002 Nissan | Lucchini Engineering | 1:54.294 | 2:04.9870 | 1:54.2940 | 1:54.8850 | 1:54.7540 |
| 21st | 20 | Farfus / Collard / Papis / Garbagnati | Ferrari 360 Modena N-GT | JMB USA Racing | 1:54.307 | 1:58.6440 | 1:54.3070 | 1:55.6340 | 1:56.6560 |
| 22nd | 33 | Wagner / Martini / Tremblay / Wellman | Ferrari 360 Modena GT | Scuderia Ferrari of Washington | 1:54.403 | 1:55.1240 | 1:55.8240 | 1:56.9260 | 1:54.4030 |
| 23rd | 67 | Davis / Julien / Nastasi / Lacey | Porsche 996 GT3-RS | The Racer's Group | 1:54.436 | 1:54.4360 | 1:55.7860 | 1:56.6550 | 1:55.1920 |
| 24th | 35 | Kelleners / Lazzaro / Mowlem | Ferrari 360 Modena GT | Risi Competizione | 1:54.495 | 1:55.0840 | 1:54.4950 | 1:54.9950 | 1:56.2060 |
| 25th | 30 | Short / Herridge / Burton / Shep | Mosler MT900R | Rollcentre Racing | 1:54.910 | 1:55.8480 | 1:54.9100 | 1:57.4410 | 1:57.3150 |
| 26th | 34 | Baldi / Keen / van de Poele / Hampton | Ferrari 360 Modena GT | Ferri Competizione | 1:54.953 | 1:56.0450 | 1:54.9530 | 1:56.6820 | 1:56.3770 |
| 27th | 77 | Vasiliev / Tanaka / Fomenko / Lechner, Jr. | Porsche 996 GT3-R | RWS Motorsport | 1:54.992 | 2:00.2380 | 1:54.9920 | 1:56.9690 | 1:56.8000 |
| 28th | 21 | Oberto / Bingham / Cope / DeVries | Lola B2K/40 Nissan | Archangel Motorsport Services | 1:55.273 | 1:57.6090 | 1:55.2730 | 1:57.7250 | 1:56.7750 |
| 29th | 57 | Caffi / Rosa / Chiesa / Rosa | Porsche 996 GT3-RS | Seikel Motorsport | 1:55.368 | 1:56.6280 | 1:55.6440 | 1:57.7920 | 1:55.3680 |
| 30th | 10 | Terrien / Delalande / de Lorenzi / Saviozzi | Porsche 996 GT3-R | MAC Racing | 1:55.664 | 1:55.6640 | 1:56.8880 | 1:56.6410 | 1:56.2150 |
| 31st | 31 | Stanton / Barff / Britnell / Sutherland | Mosler MT900R | Rollcentre Racing | 1:55.727 | 1:55.7270 | 1:56.3570 | 1:59.9780 | 1:55.8830 |
| 32nd | 03 | Euser / Knook / Crevels / Van der Kolk | Marcos Mantis Plus | Marcos USA | 1:56.024 | 1:56.0240 | 1:56.3020 | 1:58.5640 | 1:58.2370 |
| 33rd | 51 | Casadei / *Ried / *Ried / *Jurasz | Porsche 911 GT2 | Proton Competition | 1:56.032 | 1:56.0320 | 4:55.5430 | 1:58.9370 | 1:59.4400 |
| 34th | 5 | Bentley / Kitch / Pruskowski / Pruskowski | Lola B2K/40 Nissan | Team Seattle/Essex Racing | 1:56.548 | 1:56.8980 | 1:56.5480 | 1:59.6450 | 1:58.7780 |
| 35th | 69 | Cunningham / Plumb / Friedman / Stanton | BMW M3 | Marcus Racing | 1:56.841 | 1:58.8150 | 1:56.8410 | 1:57.7310 | 1:57.9070 |
| 36th | 73 | Wilson / Newton / Gooding / Konig | Porsche 996 GT3-R | Graham Nash Motorsport | 1:56.926 | 2:01.0450 | 1:56.9260 | 2:00.2500 | 2:01.8850 |
| 37th | 99 | Hamblin / Brensinger / Nelson / Greenberg | Porsche 996 GT3-RS | NETTTS Racing | 1:57.144 | 1:57.1440 | 1:57.7370 | 1:57.1950 | 1:58.1350 |
| 38th | 49 | Orlandi / Merendino / Clark / Atapattu | Porsche 996 GT3-RS | Pit Bull/MAC Racing | 1:57.495 | 1:59.0080 | 1:58.1480 | 1:58.8760 | 1:57.4950 |
| 39th | 6 | Jeannette / *Dayton / *Kitchak / *Zitza | Porsche 911 GT1 | Gunnar Racing | 1:57.591 | 1:57.5910 | 1:59.1680 | 1:58.5000 | 1:57.7880 |
| 40th | 61 | van Merksteijn / Brugman / Munsterhuis / Jacobsen | Porsche 996 GT3-RS | System Force Motorsports | 1:57.829 | 1:58.3360 | | 1:57.8290 | 2:10.1210 |
| 41st | 68 | Michaelian / Valentine / Hessert, III / Hessert | Porsche 996 GT3-RS | The Racer's Group | 1:57.897 | 1:57.8970 | 1:57.9360 | 2:03.6000 | 1:58.8260 |
| 42nd | 15 | Gaughran / Gorriaran / MacLeod / Gaylord | Lola B2K/40 Nissan | Team Seattle/Essex Racing | 1:57.957 | 1:59.5800 | 1:57.9570 | 2:01.2940 | 2:00.9680 |
| 43rd | 22 | Earle / *Shearer / *Grégoire / *Manfredi | Ferrari 360 Modena N-GT | JMB USA Racing | 1:58.289 | 2:00.3850 | 1:58.3120 | 1:59.7910 | 1:58.2890 |
| 44th | 80 | Bayliff / Marshall / Prilika / *Lally | Picchio D-USA BMW | G&W Motorsports | 2:00.047 | no time | 2:00.0470 | 2:19.6210 | 2:15.8420 |
| 45th | 18 | Stiver / *Deware / *Bell / *Kline | Mosler MT900R | Boston Motorsports Group | 2:00.156 | 2:00.2530 | 2:02.8430 | | 2:00.1560 |