| 1st | 60 | Mark Patterson / Oswaldo Negri / Justin Wilson / Graham Rahal | Riley Mk XX Ford | Michael Shank Racing | 1:40.7930 |
| 2nd | 6 | John Pew / Ian James / A. J. Allmendinger / Burt Frisselle | Riley Mk XX Ford | Michael Shank Racing | 1:40.8020 |
| 3rd | 91 | Jim Matthews / Marc Goossens / Johnny O'Connell / Ryan Hunter-Reay | Riley Mk XX Pontiac | Bob Stallings/Riley-Matthews | 1:41.0410 |
| 4th | 10 | Wayne Taylor / Max Angelelli / Michael Valiante / Ricky Taylor | Riley Mk XI Pontiac | SunTrust Racing | 1:41.1610 |
| 5th | 61 | Brian Frisselle / Mark Wilkins / Andrew Ranger / Colin Braun | Riley Mk XX Ford | AIM Autosport | 1:41.4130 |
| 6th | 01 | Scott Pruett / Memo Rojas / Juan Pablo Montoya / Dario Franchitti | Riley Mk XI Lexus | Chip Ganassi with Felix Sabates | 1:41.5050 |
| 7th | 58 | Darren Law / David Donohue / Buddy Rice | Riley Mk XI Porsche | Brumos Racing | 1:41.7640 |
| 8th | 11 | Ryan Dalziel / Tomáš Enge / Harold Primat / *Milka Duno | Riley Mk XI Pontiac | SAMAX | 1:41.8780 |
| 9th | 7 | Matt Plumb / Quentin Wahl / Stéphane Grégoire / Michael Cullen / Paddy Shovlin | Riley Mk XI BMW | Sigalsport | 1:41.9750 |
| 10th | 02 | Scott Dixon / Dan Wheldon / Salvador Duran / Alex Lloyd | Riley Mk XI Lexus | Chip Ganassi with Felix Sabates | 1:41.9960 |
| 11th | 99 | Alex Gurney / Jon Fogarty / Jim Vasser / Jimmie Johnson | Riley Mk XI Pontiac | Gainsco/Bob Stallings Racing | 1:42.1600 |
| 12th | 23 | Bill Auberlen / Joey Hand / Patrick Long / Andy Wallace | Crawford DP03 Porsche | Alex Job Racing | 1:42.2300 |
| 13th | 9 | Ryan Briscoe / Helio Castroneves / Kurt Busch | Riley Mk XI Pontiac | Penske-Taylor Racing | 1:42.2570 |
| 14th | 2 | Mike Rockenfeller / Allan McNish / Lucas Luhr / *Henry Zogaib | Riley Mk XI Pontiac | SAMAX | 1:42.2710 |
| 15th | 76 | Niclas Jönsson / Ricardo Zonta / Darren Turner | Riley Mk XI Pontiac | Krohn Racing | 1:42.2960 |
| 16th | 77 | Memo Gidley / Brad Jaeger / Fabrizio Gollin / Gabriele Gardel | Doran JE4 Ford | Doran Racing | 1:42.5260 |
| 17th | 59 | J. C. France / João Barbosa / Terry Borcheller / Hurley Haywood | Riley Mk XI Porsche | Brumos Racing | 1:42.8160 |
| 18th | 3 | Shane Lewis / Bill Lester / Ted Christopher / Alex Barron | Riley Mk XI Lexus | Southard Motorsports | 1:42.9360 |
| 19th | 12 | Justin Bell / Tonis Kasemets / *Derek Bell / *Paul Dallenbach / *Roger Schramm | Riley Mk XI Pontiac | RVO Motorsports | 1:43.1350 |
| 20th | 03 | Ed Carpenter / Anthony Foyt / Vítor Meira / John Andretti / *Tony George | Crawford DP03 Porsche | Vision Racing | 1:43.3420 |
| 21st | 16 | Antonio Garcia / Matteo Bobbi / Fabio Babini / Stéphane Ortelli | Coyote CC/08 Pontiac | Cheever Racing | 1:43.6180 |
| 22nd | 51 | Mike Newton / Thomas Erdos / *Tom Kimber-Smith / *Scott Mayer / *Brent Sherman | Coyote CC/08 Pontiac | Cheever Racing | 1:43.7090 |
| 23rd | 09 | Guy Cosmo / Marc-Antoine Camirand / Michael McDowell | Fabcar FDSC/03 Evo Porsche | Spirit of Daytona Racing | 1:44.9200 |
| 24th | 31 | Seth Ingham / Mirco Schultis / Ettore Contini / Bob Frost / Miro Konôpka | Chase CCE-001 Pontiac | Matt Connolly Motorsports | 1:48.7830 |
| 25th | 70 | David Haskell / Sylvain Tremblay / Nick Ham / Raphael Matos | Mazda RX-8 | SpeedSource | 1:50.7580 |
| 26th | 67 | Spencer Pumpelly / Emmanuel Collard / Bryan Sellers / Romain Dumas / Tim George, Jr. | Porsche 997 GT3 Cup | TRG | 1:50.9450 |
| 27th | 34 | Lance Willsley / Tom Papadopoulos / Mike Fitzgerald / Johnny Mowlem | Porsche 997 GT3 Cup | Orbit | 1:51.3480 |
| 28th | 21 | Karl Reindler / Diego Alessi / Hal Prewitt / Spencer Trenery / Vic Rice | Pontiac GTO.R | Matt Connolly Motorsports | 1:51.4500 |
| 29th | 80 | Mark Greenberg / Damien Faulkner / Jan Heylen / Lance Arnold | Porsche 997 GT3 Cup | Synergy Racing | 1:51.5130 |
| 30th | 62 | Martin Ragginger / Claudio Burtin / Jack Baldwin / Scott Tucker / Ed Zabinski | Porsche 997 GT3 Cup | TRG | 1:51.5730 |
| 31st | 30 | Ken Dobson / Robert Thorne / Drew Staveley / Craig Stone | Mazda RX-8 | Racers Edge Motorsports | 1:51.6060 |
| 32nd | 57 | Robin Liddell / Andrew Davis / Randy Pobst / Gunnar Jeannette | Pontiac GXP.R | Stevenson Motorsports | 1:51.7170 |
| 33rd | 88 | Frank Stippler / Pierre Kaffer / David Lacey / Greg Wilkins / Eric Curran | Porsche 997 GT3 Cup | Farnbacher Loles | 1:51.7230 |
| 34th | 66 | Bryce Miller / Ted Ballou / Andy Lally / Richard Westbrook | Porsche 997 GT3 Cup | TRG | 1:51.8020 |
| 35th | 89 | Luca Drudi / Raffaele Giammaria / Gabrio Rosa / Jörg Hardt / Giacomo Petrobelli | Porsche 997 GT3 Cup | Farnbacher Loles | 1:51.8050 |
| 36th | 87 | Dominik Farnbacher / Pierre Ehret / Timo Bernhard / Dirk Werner | Porsche 997 GT3 Cup | Farnbacher Loles | 1:51.8230 |
| 37th | 86 | Wolf Henzler / Eric Lux / Leh Keen / Sascha Maassen / Jörg Bergmeister | Porsche 997 GT3 Cup | Farnbacher Loles | 1:51.8410 |
| 38th | 15 | Tom Nastasi / David Empringham / Jean-Francois Dumoulin / Boris Said | Ford Mustang | Blackforest Motorsports | 1:51.9470 |
| 39th | 69 | Emil Assentato / Jeff Segal / Nick Longhi / Lonnie Pechnik | Mazda RX-8 | SpeedSource | 1:52.0520 |
| 40th | 07 | Paul Edwards / Kelly Collins / Jan Magnussen | Pontiac GXP.R | Banner Racing | 1:52.0610 |
| 41st | 90 | Jep Thornton / Tom Long / Joe Varde / Dave Russell | BMW M6 | Automatic Racing | 1:52.0650 |
| 42nd | 27 | Kevin O'Connell / Kevin Roush / Hugh Plumb / Kris Wilson | Porsche 997 GT3 Cup | O'Connell Racing | 1:52.0950 |
| 43rd | 22 | Carlos de Quesada / Marc Basseng / Nathan Swartzbaugh / Patrick Pilet | Porsche 997 GT3 Cup | Alegra Motorsports | 1:52.1940 |
| 44th | 29 | Jake Rosenzweig / Bob Woodman / Scooter Gabel / Louis-Philippe Dumoulin / *Chris Gleason | Porsche 997 GT3 Cup | Alegra Motorsports | 1:52.2400 |
| 45th | 63 | Duncan Ende / Hima Maher / *Piere Bourque / *Ron Yarab, Jr. | Porsche 997 GT3 Cup | TRG | 1:52.2780 |
| 46th | 14 | Cory Friedman / Mac McGehee / Anthony Lazzaro / Ralf Kelleners | Porsche 997 GT3 Cup | Autometrics Motorsports | 1:52.4730 |
| 47th | 06 | Leighton Reese / Robert Nearn / Andy Pilgrim / Marc Bunting | Pontiac GXP.R | Banner Racing | 1:52.4860 |
| 48th | 40 | Joe Foster / Charles Espenlaub / Patrick Dempsey / Romeo Kapudija / Scott Maxwell | Mazda RX-8 | Hyper Sport | 1:52.5280 |
| 49th | 72 | Lawson Aschenbach / Tim Lewis, Jr. / Craig Stanton / Max Papis | Pontiac GXP.R | Autohaus Motorsports | 1:52.5520 |
| 50th | 50 | John Farano / Carl Jensen / John Cloud / Boris Said / James Bradley | Ford Mustang | Blackforest Motorsports | 1:53.1090 |
| 51st | 83 | Charles Crews / Russell Walker / Peter Ludwig / Ben McCrackin / Tim Bergmeister | Porsche 997 GT3 Cup | Farnbacher Loles | 1:53.1360 |
| 52nd | 65 | Russ Oasis / Tom Atherton / Jim Stout / Jason Daskalos / Tommy Archer | Porsche 997 GT3 Cup | TRG | 1:53.1740 |
| 53rd | 85 | Don Kitch / Ross Bentley / Steve Miller / Chris Pallis | Porsche 997 GT3 Cup | Farnbacher Loles | 1:53.3530 |
| 54th | 43 | Joe Sahlen / Will Nonnamaker / Wayne Nonnamaker / Joe Nonnamaker | Chevrolet Corvette | Team Sahlen | 1:53.5640 |
| 55th | 74 | Derek Skea / Bransen Patch / Jim Hamblin / Joseph Safina / David Murry | Porsche 997 GT3 Cup | Autometrics Motorsports | 1:53.8120 |
| 56th | 84 | Chris Bingham / Don Pickering / Bill Cotter / Chris Pennington | Porsche 997 GT3 Cup | Farnbacher Loles | 1:53.9910 |
| 57th | 17 | Ron Zitza / Gary Jensen / Mark Jensen / Jordan Taylor | Porsche 997 GT3 Cup | Terra Firma Motorsports | 1:54.3090 |
| 58th | 68 | Michael Gomez / Michael Auriemma / John Mayes / Scott Schroeder / Brent Milner | Porsche 997 GT3 Cup | TRG | 1:54.3160 |
| 59th | 52 | Roberto Ragazzi / Ma Chi Min Effiniz / Constantino Bertuzzi / Joe Castellano / Fred Machado | Ferrari F430 Challenge | Mastercar | 1:54.8550 |
| 60th | 64 | Jim Lowe / Jim Pace / Johannes van Overbeek / Tim Sugden / Richard Valentine | Porsche 997 GT3 Cup | TRG | 1:55.2680 |
| 61st | 44 | Steve Paquette / Glenn Nixon / Zach Arnold / Dyrk Van Zanten, Jr. | Porsche 996 GT3 Cup | Bullet Racing | 1:55.4240 |
| 62nd | 26 | Jerome Jacalone / Joe Jacalone / Jim Michaelian / Bob Michaelian / *Scooter Gabel | Porsche 997 GT3 Cup | Gotham Competition | 1:57.4080 |
| 63rd | 08 | Steve Goldin / Keith Goldin / Jim Meassick / Squeak Kennedy | Mazda RX-8 | Goldin Brothers Racing | 1:58.4000 |