| 1st | 23 | Long / Rockenfeller / Luhr | Crawford DP03 Porsche | Alex Job Racing/Emory Motorsports | 1:44.009 | 1:44.0090 | 1:44.2990 | 1:46.4980 | 1:44.1790 | no time |
| 2nd | 10 | Taylor / Collard / Angelelli / Briscoe | Riley Mk XI Pontiac | SunTrust Racing | 1:44.395 | 1:44.3950 | 1:46.0030 | 1:45.8460 | 1:44.6340 | 1:59.2210 |
| 3rd | 12 | Fernandez / Haberfeld / Sharp | Riley Mk XI Pontiac | Lowe's Fernandez Racing | 1:44.456 | 1:44.8380 | 1:46.9650 | 1:47.3950 | 1:44.4560 | no time |
| 4th | 02 | Dixon / Wheldon / Mears | Riley Mk XI Lexus | Target Chip Ganassi with Felix Sabates | 1:44.609 | 1:44.6090 | 1:45.9020 | 1:45.5170 | 1:44.6260 | no time |
| 5th | 99 | Gurney / Stallings / Vasser / Moran, Jr. | Riley Mk XI Pontiac | Gainsco/Blackhawk Racing | 1:44.675 | 1:44.6750 | 1:46.7150 | 1:47.4100 | 1:45.8770 | no time |
| 6th | 78 | Zacharias / Bourdais / Boesel | Doran JE4 Ford | Doran Racing | 1:44.691 | 1:44.6910 | 1:47.3780 | 1:46.7070 | 1:45.6680 | no time |
| 7th | 60 | Negri / Patterson / Allmendinger / Wilson | Riley Mk XI Lexus | Michael Shank Racing | 1:44.771 | 1:44.7710 | 1:45.7400 | 1:45.7180 | 1:46.1500 | 1:48.4210 |
| 8th | 19 | Gidley / McDowell / Barron | Crawford DP03 Ford | Playboy/Uniden Racing | 1:44.827 | 1:44.8270 | 1:45.6670 | 1:45.8610 | 1:45.8710 | no time |
| 9th | 6 | Tracy / Mears, Jr. / Borkowski / Wilden | Riley Mk XI Lexus | Graydon Elliott Fusion Racing with MSR | 1:44.933 | 1:45.0150 | 1:45.9480 | 1:44.9330 | 1:45.6300 | no time |
| 10th | 28 | Valiante / Finlay / Herta / Rice | Crawford DP03 Ford | Finlay Motorsports | 1:44.933 | 1:44.9330 | 1:46.1650 | no time | 1:45.4670 | no time |
| 11th | 3 | Lewis / Szekeres / LaJoie / Burgess | Riley Mk XI BMW | Southard Motorsports | 1:44.944 | 1:44.9440 | 1:47.2900 | 1:46.6690 | 1:45.9750 | no time |
| 12th | 01 | Pruett / Diaz / Papis | Riley Mk XI Lexus | CompUSA Chip Ganassi with Felix Sabates | 1:44.969 | 1:44.9690 | 1:45.5750 | no time | 1:45.3960 | no time |
| 13th | 59 | France / Barbosa / Christopher / Haywood | Fabcar FDSC/03 Porsche | Brumos Racing | 1:44.983 | 1:44.9830 | 1:46.4480 | 1:49.2520 | 1:47.7930 | no time |
| 14th | 8 | Frisselle / Frisselle / Field / Huisman | Doran JE4 Porsche | Synergy Racing | 1:44.996 | 1:44.9960 | 1:46.4930 | 1:48.5180 | 1:46.0370 | no time |
| 15th | 39 | Fittipaldi / Cheever, Jr. / Carpentier | Crawford DP03 Lexus | Cheever Racing | 1:45.189 | 1:45.1890 | 1:46.2300 | 1:46.6040 | 1:45.9220 | no time |
| 16th | 58 | Donohue / Law / Maassen | Fabcar FDSC/03 Porsche | Red Bull/Brumos Porsche | 1:45.197 | 1:45.1970 | 1:46.5560 | 1:45.9540 | 1:45.4530 | 1:46.9680 |
| 17th | 89 | Dalziel / Fogarty / Figge / Empringham | Riley Mk XI Pontiac | Pacific Coast Motorsports | 1:45.424 | 1:45.4240 | 1:46.0240 | no time | 1:47.5060 | 1:45.9840 |
| 18th | 7 | Franchitti / Duno / Franchitti / McGarrity | Riley Mk XI Pontiac | CITGO Racing by SAMAX | 1:45.673 | 1:45.6730 | 1:46.3890 | 1:47.0660 | 1:46.0520 | no time |
| 19th | 2 | Lammers / Patrick / McNish / Wallace | Crawford DP03 Pontiac | Howard - Boss Motorsports | 1:45.953 | 1:45.9530 | 1:46.4430 | 1:48.3450 | 1:46.5690 | 1:48.1810 |
| 20th | 51 | Johansson / Hughes / Erdos | Crawford DP03 Lexus | Cheever Racing | 1:46.074 | 1:46.0740 | 1:46.7640 | no time | 1:46.8340 | no time |
| 21st | 77 | Barber / Borcheller / Jourdain / Brix | Doran JE4 Ford | Feeds The Need/Doran Racing | 1:46.254 | 1:46.2540 | 1:46.9060 | 1:47.5240 | 1:47.2270 | no time |
| 22nd | 4 | Wallace / Leitzinger / Stewart | Crawford DP03 Pontiac | Howard - Boss Motorsports | 1:46.255 | 1:46.3930 | 1:47.2840 | 1:46.7030 | 1:46.2550 | 1:49.1970 |
| 23rd | 40 | Fellows / Ruhlman / Bingham / Bell | Riley Mk XI Pontiac | Derhaag Motorsports | 1:46.260 | 1:46.7420 | 1:47.7440 | 1:49.0470 | 1:46.2600 | 1:48.1810 |
| 24th | 16 | Dyson / Dyson / Gavin / Smith | Crawford DP03 Pontiac | Howard - Boss Motorsports | 1:46.511 | 1:48.0360 | 1:46.9890 | 1:48.1140 | 1:47.1620 | 1:46.5110 |
| 25th | 84 | Dallenbach, Jr. / Robinson / Dallenbach / Brassfield | Riley Mk XI Pontiac | Robinson Racing | 1:46.613 | 1:46.6130 | 1:47.2700 | 1:48.6760 | 1:47.5720 | no time |
| 26th | 75 | Krohn / Jönsson / Bergmeister / Braun | Riley Mk XI Pontiac | Krohn Racing | 1:46.649 | no time | 1:47.4010 | 1:47.8160 | 1:46.6490 | 1:46.6540 |
| 27th | 5 | Dayton / Knoop / DeVries / Matthews / Gue | Crawford DP03 Ford | Essex Racing | 1:46.981 | 1:46.9810 | 1:47.5250 | 1:50.9660 | 1:50.1240 | no time |
| 28th | 11 | Tuttle / Petty / Said | Riley Mk XI BMW | Tuttle Team Racing/SAMAX | 1:47.010 | 1:51.4860 | 1:47.0100 | 1:48.2160 | 1:47.3400 | no time |
| 29th | 50 | Zogaib / James / Nastasi / Gleason | Crawford DP03 Ford | Blackforest Motorsports | 1:47.221 | 1:47.2210 | 1:49.6220 | no time | 1:48.0140 | 1:47.4950 |
| 30th | 09 | Goad / Primat / Labonte / Oberto | Crawford DP03 Pontiac | Spirit of Daytona Racing | 1:47.634 | 1:47.6340 | 1:47.9540 | 1:49.0180 | 1:48.2880 | 1:48.0620 |
| 31st | 72 | Henzler / Liddell / Van Overbeek / Rahal | Porsche 997 GT3 Cup | Tafel Racing | 1:53.336 | 1:53.3360 | 1:53.8660 | no time | 1:53.4640 | 1:54.3900 |
| 32nd | 74 | Davis / Espenlaub / Lux / Tafel / Cawley | Porsche 997 GT3 Cup | Tafel Racing | 1:53.461 | 1:53.4610 | 1:55.1360 | no time | 1:53.8750 | 1:57.3820 |
| 33rd | 82 | Werner / Peter / Quester / Riccitelli | Porsche 997 GT3 Cup | Farnbacher Racing/Farnbacher Loles | 1:53.726 | 1:53.7260 | 1:54.0470 | 1:55.3390 | 1:54.3120 | 1:54.6810 |
| 34th | 70 | Tremblay / Haskell / Altenburg / Ham | Mazda RX-8 | SpeedSource | 1:53.846 | 1:53.8460 | 1:54.4770 | no time | 1:55.0980 | 1:55.6420 |
| 35th | 64 | Edwards / Collins / Pilgrim / Magnussen | Pontiac GTO.R | TRG | 1:53.861 | 1:53.8610 | 1:54.3690 | 1:55.4280 | 1:54.6680 | 1:55.3870 |
| 36th | 65 | Lally / Bunting / Valentine / O'Connell | Pontiac GTO.R | TRG | 1:53.983 | 1:53.9830 | 1:54.3800 | 1:57.2870 | 1:54.7080 | 1:54.0790 |
| 37th | 83 | Farnbacher / Fitzgerald / Ehret / Basseng | Porsche 997 GT3 Cup | Farnbacher Loles/Orbit Racing | 1:54.003 | 1:54.0030 | 1:54.7620 | no time | 1:55.1920 | 1:55.4770 |
| 38th | 36 | Pobst / Pumpelly / Levitas / Baas | Porsche 996 GT3 Cup | TPC Racing | 1:54.053 | 1:54.0530 | 1:54.8040 | 1:55.0120 | 1:55.1640 | 1:57.0800 |
| 39th | 22 | Dumoulin / Longhi / Assentato / Pechnik / Thornton | Porsche 996 GT3 Cup | Fiorano Racing | 1:54.224 | 1:54.2240 | 1:55.2360 | 1:57.7970 | 1:55.2090 | 1:54.8180 |
| 40th | 17 | Mowlem / Arnold / Sellers / Shep / Seyffarth | Porsche 997 GT3 Cup | SAMAX | 1:54.300 | 1:54.3000 | 1:54.3470 | 1:56.7180 | 1:54.7900 | 1:55.2160 |
| 41st | 05 | Auberlen / Alhadeff / Milner / Marks / Sigal | BMW M3 E46 | Sigalsport BMW | 1:54.322 | 1:54.3220 | 1:55.8650 | 1:55.4070 | 1:56.4460 | no time |
| 42nd | 06 | Archer / Reese / Oasis / Crescentini | Chevrolet Corvette | Banner Racing | 1:54.574 | 1:54.5740 | 1:57.3740 | 1:56.3360 | 1:55.6060 | 1:57.6320 |
| 43rd | 57 | Rice / Riggins / Stevenson / Trenery / Cicero | Chevrolet Corvette | Stevenson Motorsports | 1:54.829 | 1:54.8290 | 1:56.7980 | 1:56.4160 | 2:01.7410 | 1:56.1090 |
| 44th | 80 | Murry / Keen / Stanton / Pompidou | Porsche 996 GT3 Cup | Synergy Racing | 1:54.964 | 1:54.9640 | 1:55.6240 | 1:56.9960 | 1:55.5460 | 1:55.4620 |
| 45th | 71 | Lacey / Martini / Wilkins / Wilkins / Mowlem | Porsche 997 GT3 Cup | SAMAX/Doncaster Racing | 1:55.667 | 1:56.0060 | 1:55.6670 | 1:55.8460 | 1:56.2500 | no time |
| 46th | 66 | Ortelli / Nearn / Sauvage / Johnson | Porsche 997 GT3 Cup | TRG | 1:55.718 | 1:57.4740 | 1:55.7180 | 1:57.0460 | 1:55.7920 | no time |
| 47th | 41 | Nonnamaker / Nonnamaker / Nonnamaker / Gonzalez, Jr. | Porsche 996 GT3 Cup | Team Sahlen | 1:56.016 | 1:56.0160 | 1:57.8090 | no time | 1:57.6790 | 1:58.6700 |
| 48th | 67 | Flanagan / Kroczek / Keith / Bullock | Porsche 996 GT3 Cup | TRG | 1:56.098 | 1:59.7530 | 1:59.2240 | 1:59.9110 | 1:56.0980 | 1:58.9720 |
| 49th | 93 | Ave / Stewart / Stewart / Gilbert / Stewart | Porsche 996 GT3 Cup | TPC Racing | 1:56.810 | 1:57.2550 | 1:56.8100 | 1:57.8960 | 1:58.4720 | 1:56.8500 |
| 50th | 00 | Zitza / Thomasson / Lewis, Jr. / Wheeler | Porsche 996 GT3 Cup | TZ Motorsports | 1:56.816 | 1:56.8160 | 1:57.9400 | 1:58.7630 | 1:57.9800 | 1:58.1990 |
| 51st | 87 | Gaylord / Hill / Hill / Diefenbach | Porsche 997 GT3 Cup | Synergy Racing | 1:56.854 | 1:56.8540 | 1:58.3050 | 2:00.8670 | 1:58.6160 | no time |
| 52nd | 68 | Pace / Greist / Lowe | Porsche 996 GT3 Cup | TRG | 1:57.263 | 1:57.4400 | 1:57.2630 | 2:00.5280 | 1:58.5170 | 1:59.5540 |
| 53rd | 21 | Van Uitert / Connolly / de Quesada / Sutherland / Sutherland | BMW M3 E46 | Matt Connolly Motorsports | 1:57.266 | 1:57.5330 | 1:57.2660 | 1:58.0280 | 1:58.9180 | 1:58.8690 |
| 54th | 55 | Arnold / Miller / Koselke / Poscente / Montgomery | Chevrolet Corvette | ASC Motorsports | 1:57.266 | no time | 1:58.0840 | no time | 1:57.2660 | 2:07.8370 |
| 55th | 69 | Vargo / Vargo / Herrington / Refenning | Porsche 996 GT3 Cup | TRG | 1:57.560 | 1:57.9710 | 1:57.7480 | 1:58.9410 | 1:57.5600 | 1:57.9970 |
| 56th | 52 | Bertuzzi / Monzón / McCormick / Baron | Ferrari 360 Modena Challenge | Mastercar | 1:57.590 | 1:57.5900 | 1:58.2670 | 1:58.9030 | 1:59.3000 | 1:59.8070 |
| 57th | 04 | Sigal / MacLeod / Konôpka / Rosser | BMW M3 E46 | Sigalsport BMW | 1:57.828 | 1:57.8280 | 2:00.2140 | 2:00.1690 | 2:00.0640 | no time |
| 58th | 43 | Allen / Hennessy / Michaelian / Matos / Nonnamaker | Porsche 996 GT3 Cup | Team Sahlen | 1:57.957 | 2:00.5980 | 1:58.5690 | no time | 1:57.9570 | 2:02.3270 |
| 59th | 63 | Spencer / Spencer / Mandeville / Grupp / Drummond | Mazda RX-8 | Team Spencer Motorsports | 1:58.081 | 1:58.7950 | 1:58.0810 | 2:04.4280 | 2:05.5300 | 2:01.0030 |
| 60th | 14 | | Porsche 996 GT3 Cup | Autometrics Motorsports | 1:58.185 | no time | | | 1:58.1850 | |
| 61st | 15 | Friedman / Small / McGehee / Martin / Herring | Porsche 996 GT3 Cup | Autometrics Motorsports | 1:58.553 | no time | 1:58.5530 | 2:03.3240 | | no time |
| 62nd | 24 | O'Shaughnessy / Cotter / Malloy / Shalit / Johnson | BMW M3 E46 | Matt Connolly Motorsports | 1:58.597 | 1:58.7930 | 2:00.9500 | 2:03.8580 | 1:58.5970 | 2:03.0990 |
| 63rd | 08 | Goldin / Goldin / Finlay / Richards / Thiel | Mazda RX-8 | Goldin Brothers Racing | 1:59.458 | 1:59.4580 | 2:01.2110 | no time | 1:59.7550 | 6:01.1340 |
| 64th | 86 | Kitch / Pennington / Gagne / Pallis | Porsche 997 GT3 Cup | Synergy Racing | 2:00.022 | 2:00.0220 | 2:02.0480 | 2:18.1030 | 2:00.8860 | 2:01.0270 |
| 65th | 81 | Pew / Marshall / Prewitt / Marshall / McCrackin | Porsche 996 GT3 Cup | Synergy Racing | 2:00.191 | 2:00.8870 | 2:01.0880 | 2:01.6000 | 2:00.1910 | 2:01.0450 |
| 66th | 48 | Seiler / Dubler / Hauser / DeFontes / Thiel | Chevrolet Corvette | WTF Engineering | 2:00.865 | 2:00.8650 | 2:03.0820 | 2:08.9970 | 2:06.4200 | no time |
| 67th | 46 | Mason / Baughman / Connolly / Del Vecchio / Collyer | Chevrolet Corvette | Michael Baughman Racing | 2:00.910 | 2:03.0210 | 2:01.5570 | no time | 2:00.9100 | no time |