| 10 | Taylor / Angelelli / Gordon / Magnussen | Riley Mk XI Pontiac | SunTrust Racing | 1:43.4830 | 199.3108 | 1:43.4830 |
| 99 | Gurney / Fogarty / Stallings / Vasser | Riley Mk XI Pontiac | Gainsco/Bob Stallings Racing | 1:43.7300 | 198.8377 | 1:43.7300 |
| 02 | Dixon / Wheldon | Riley Mk XI Lexus | Target Chip Ganassi with Felix Sabates | 1:43.9970 | 196.9499 | 1:43.9970 |
| 59 | France / Haywood / Barbosa / Moreno | Riley Mk XI Porsche | Brumos Porsche/Kendall | 1:44.1900 | 197.9590 | 1:44.1900 |
| 05 | Auberlen / Alhadeff / Sigal / Wendlinger | Riley Mk XI BMW | Sigalsport BMW | 1:44.2130 | 197.9155 | 1:45.1800 |
| 01 | Scott Pruett | Riley Mk XI Lexus | TELMEX Chip Ganassi with Felix Sabates | 1:44.2590 | 197.8286 | 1:44.2590 |
| 91 | Matthews / Goossens / Johnson / Hunter-Reay | Riley Mk XI Pontiac | Lowe's Riley-Matthews Motorsports | 1:44.2860 | 197.7771 | 1:44.2860 |
| 7 | Kimber-Smith / Enge / Bucknum | Riley Mk XI Pontiac | SAMAX | 1:44.3720 | 197.6146 | 1:44.3720 |
| 76 | Braun / Papis / Lehto | Riley Mk XI Pontiac | Krohn Racing | 1:44.4130 | 197.5357 | 1:44.4130 |
| 58 | Donohue / Law / Rice / Sharp | Riley Mk XI Porsche | Red Bull/Brumos Porsche | 1:44.4640 | 197.4391 | 1:44.4640 |
| 19 | Finlay / Valiante / McDowell / Labonte | Crawford DP03 Ford | Finlay Motorsports | 1:44.5160 | 197.3410 | 1:44.5160 |
| 23 | Bergmeister / Dumas / Long | Crawford DP03 Porsche | Alex Job Racing | 1:44.6050 | 197.1736 | 1:44.6050 |
| 84 | Robinson / Dallenbach, Jr. / Dallenbach / Legge | Riley Mk XI Pontiac | Robinson Racing | 1:44.6600 | 197.0706 | 1:44.6600 |
| 75 | Krohn / Jönsson | Riley Mk XI Pontiac | Krohn Racing | 1:44.6760 | 197.0400 | 1:44.6760 |
| 39 | Fittipaldi / Cheever, Jr. / Collard / Maassen | Crawford DP03 Porsche | Cheever Racing | 1:44.6890 | 197.0159 | 1:44.6890 |
| 60 | Patterson / Negri / Castroneves / Hornish, Jr. | Riley Mk XI Lexus | Michael Shank Racing | 1:44.8410 | 196.7294 | 1:44.8410 |
| 16 | Dyson / Dyson / Smith / Gavin | Crawford DP03 Pontiac | Howard Motorsports | 1:44.8630 | 196.6892 | 1:44.8630 |
| 11 | Duno / Manning / Carpentier / Dalziel | Riley Mk XI Pontiac | SAMAX | 1:45.0210 | 196.3931 | 1:45.0210 |
| 6 | Zogaib / James / Tracy / Allmendinger | Riley Mk XI Lexus | Michael Shank Racing | 1:45.2800 | 195.9103 | 1:45.2800 |
| 47 | Morgan / Morgan / Bernhard / Zacharias | Riley Mk XI Porsche | TruSpeed Motorsports | 1:45.4950 | 195.5096 | 1:45.4950 |
| 00 | Carpenter / Scheckter / George / Foyt | Crawford DP03 Porsche | Vision Racing | 1:45.5250 | 195.4548 | 1:45.5250 |
| 77 | Gollin / Gidley / Jourdain / Servia | Doran JE4 Ford | Doran Racing | 1:45.5960 | 195.3229 | 1:45.5960 |
| 20 | Wallace / Leitzinger / Stewart | Crawford DP03 Pontiac | Howard Motorsports | 1:45.6060 | 195.3052 | 1:45.6060 |
| 61 | Wilkins / Empringham / Frisselle / Frisselle | Riley Mk XI Lexus | AIM Autosport | 1:46.3580 | 193.9243 | 1:46.3580 |
| 51 | Newton / Erdos / Brix | Fabcar FDSC/03 Porsche | Cheever Racing | 1:46.4850 | 193.6926 | 1:46.4850 |
| 3 | Lewis / Ruhlman | Riley Mk XI Lexus | Southard Motorsports | 1:46.7030 | 193.2967 | 1:46.7030 |
| 12 | Schramm / Baldwin / Lester | Riley Mk XI Pontiac | RVO Motorsports | 1:47.3350 | 192.1589 | 1:47.3350 |
| 18 | Alzen / Renauer / Borcheller / Mazzacane / Pastorelli | Fabcar FDSC/03 Porsche | VICI Racing | 1:47.5110 | 191.8435 | 1:47.5110 |
| 28 | McQuiston / Feinberg / Safina | Porsche 997 GT3 Cup | At Speed Motorsports | 1:51.9460 | 184.2441 | 1:51.9460 |
| 85 | Keen / Ehret / Werner / Hardt | Porsche 997 GT3 Cup | Farnbacher Loles Motorsports | 1:52.0160 | 184.1283 | 1:52.0160 |
| 66 | Lally / Pumpelly / Valentine / Greenberg / Buckler | Porsche 997 GT3 Cup | TRG | 1:52.7910 | 182.8633 | 1:52.7910 |
| 86 | Bowman / Bell / Willsley / Price | Porsche 997 GT3 Cup | Farnbacher Loles Motorsports | 1:52.8150 | 182.8247 | 1:52.8150 |
| 81 | Johnson / Westbrook / Lietz / Huisman | Porsche 997 GT3 Cup | Synergy Racing | 1:52.9910 | 182.5399 | 1:52.9910 |
| 72 | Davis / Swartzbaugh / Liddell / Tafel | Porsche 997 GT3 Cup | Tafel Racing | 1:53.1090 | 182.3499 | 1:53.1090 |
| 74 | Lux / Henzler / Farnbacher / Tafel | Porsche 997 GT3 Cup | Tafel Racing | 1:53.1680 | 182.2550 | 1:53.1680 |
| 15 | Nastasi / Tagliani / Cosmo / Gigliotti | Ford Mustang Cobra GT | Blackforest Motorsports | 1:53.2860 | 182.0651 | 1:53.2860 |
| 70 | Haskell / Tremblay / Ham / Pobst | Mazda RX-8 | SpeedSource | 1:53.4080 | 181.8688 | 1:53.4080 |
| 88 | Loles / Miller / Pank / Plumb / Stanton | Porsche 997 GT3 Cup | Farnbacher Loles Motorsports | 1:53.4090 | 181.8671 | 1:53.4090 |
| 87 | Zugel / Burke / Jeannette / Eversley | Porsche 997 GT3 Cup | Farnbacher Loles Motorsports | 1:53.5670 | 181.6145 | 1:53.5670 |
| 65 | Gomez / Marden / Milner / Peterson | Porsche 997 GT3 Cup | TRG | 1:53.6880 | 181.4214 | 1:53.6880 |
| 64 | Lowe / Pace / Van Overbeek / Kelleners | Porsche 997 GT3 Cup | TRG | 1:53.9350 | 181.0271 | 1:53.9350 |
| 07 | Edwards / Pilgrim / O'Connell / Collins | Pontiac GXP.R | Banner Racing | 1:54.0450 | 180.8533 | 1:54.0450 |
| 06 | Reese / Pilgrim / Edwards / Collins | Pontiac GXP.R | Banner Racing | 1:54.2140 | 180.5845 | 1:54.2140 |
| 69 | Assentato / Longhi / Segal | Mazda RX-8 | SpeedSource | 1:54.2390 | 180.5459 | 1:54.2390 |
| 63 | Spencer / Spencer / Grupp | Mazda RX-8 | Team Spencer Motorsports | 1:54.3670 | 180.3431 | 1:54.3670 |
| 89 | Ellis / Grande / Rossi / Wellon / Friedman | Porsche 997 GT3 Cup | Autometrics Motorsports | 1:54.8930 | 179.5175 | 1:54.8930 |
| 73 | Nielsen / Martini / Quester / Peter | Porsche 997 GT3 Cup | Tafel Racing | 1:54.9260 | 179.4660 | 1:54.9260 |
| 68 | Ballou / Jaeger / Gleason / DeSimone II | Porsche 997 GT3 Cup | TRG | 1:55.2020 | 179.0363 | 1:55.2020 |
| 67 | Bourque / Cloet / Solley / Harris | Porsche 997 GT3 Cup | TRG | 1:55.6350 | 178.3652 | 1:55.6350 |
| 57 | Cicero / Bunting / Gue / Stevenson | Chevrolet Corvette | Stevenson Motorsports | 1:55.7750 | 178.1496 | 1:55.7750 |
| 21 | Alessi / Connolly / Kapudija | BMW M3 | Matt Connolly Motorsports | 1:55.9550 | 177.8744 | 1:55.9550 |
| 17 | Lacey / Wilkins / Arnold / Mowlem / Papadopoulos | Porsche 997 GT3 Cup | Doncaster Racing | 1:56.1990 | 177.5010 | 1:56.1990 |
| 22 | de Quesada / Dumoulin / Gabel | Porsche 997 GT3 Cup | Alegra Motorsports/Fiorano Racing | 1:56.3850 | 177.2161 | 1:56.3850 |
| 43 | Sahlen / Nonnamaker / Nonnamaker / Nonnamaker | Chevrolet Corvette | Team Sahlen | 1:56.8660 | 176.4871 | 1:56.8660 |
| 14 | Patch / McGehee / Allen / Hamblin / Friedman | Porsche 997 GT3 Cup | Autometrics Motorsports | 1:57.1820 | 176.0107 | 1:57.1820 |
| 83 | Gaylord / Pickering / Hilton / McCrackin | Porsche 997 GT3 Cup | Synergy Racing | 1:58.3320 | 174.3000 | 1:58.3320 |
| 24 | Dennard / Pickett / Cotter | BMW M3 | Matt Connolly Motorsports | 1:59.3530 | 172.8098 | 1:59.3530 |
| 08 | Goldin / Goldin / Finger | Mazda RX-8 | Goldin Brothers Racing | 1:59.6290 | 172.4106 | 1:59.6290 |
| 42 | Mayes / Kaemmer / Auriemma / Willcox | Porsche 996 GT3 Cup | Team Sahlen | 1:59.6740 | 172.3463 | 1:59.6740 |
| 82 | Kitch / Pennington / Pallis / Bawcutt | Porsche 997 GT3 Cup | Synergy Racing | 1:59.7690 | 172.2095 | 1:59.7690 |
| 49 | Sahlen / Nonnamaker / Nonnamaker / Nonnamaker | Pontiac GTO | Team Sahlen | 1:59.8850 | 172.0421 | 1:59.8850 |
| 48 | Hauser / Dubler / Magner / DeFontes | Chevrolet Corvette | WTF Engineering | 2:00.0920 | 171.7460 | 2:00.0920 |
| 46 | Baughman / Collyer / Connolly | Chevrolet Corvette | Michael Baughman Racing | 2:02.3240 | 168.6126 | 2:02.3240 |
| 41 | Brent / Michaelian / Michaelian / Malloy / Becker | Porsche 996 GT3 Cup | Team Sahlen | 2:04.7710 | 165.3054 | 2:04.7710 |