| 1st | 99 | Alex Gurney / Jon Fogarty / Jim Vasser / *Bob Stallings | Riley Mk XI Pontiac | Gainsco/Bob Stallings Racing | 1:43.4750 |
| 2nd | 10 | Wayne Taylor / Max Angelelli / Jeff Gordon / Jan Magnussen | Riley Mk XI Pontiac | SunTrust Racing | 1:43.4800 |
| 3rd | 91 | Jim Matthews / Marc Goossens / Jimmie Johnson / Ryan Hunter-Reay | Riley Mk XI Pontiac | Lowe's Riley-Matthews Motorsports | 1:43.5160 |
| 4th | 58 | David Donohue / Darren Law / Buddy Rice / Scott Sharp / Hurley Haywood | Riley Mk XI Porsche | Red Bull/Brumos Porsche | 1:43.5840 |
| 5th | 11 | Milka Duno / Patrick Carpentier / Darren Manning / Ryan Dalziel | Riley Mk XI Pontiac | SAMAX | 1:43.9590 |
| 6th | 05 | Bill Auberlen / Matthew Alhadeff / Gene Sigal / Karl Wendlinger | Riley Mk XI BMW | Luggage Express Team Sigalsport BMW | 1:44.0110 |
| 7th | 19 | Rob Finlay / Michael Valiante / Michael McDowell / Bobby Labonte | Crawford DP03 Ford | Finlay Motorsports | 1:44.1330 |
| 8th | 23 | Jörg Bergmeister / Romain Dumas / Patrick Long | Crawford DP03 Porsche | Ruby Tuesday Championship Racing | 1:44.2050 |
| 9th | 02 | Scott Dixon / Dan Wheldon / Memo Rojas | Riley Mk XI Lexus | Target Chip Ganassi with Felix Sabates | 1:44.3440 |
| 10th | 47 | Charles Morgan / Rob Morgan / Timo Bernhard / B. J. Zacharias | Riley Mk XI Porsche | TruSpeed Motorsports | 1:44.3480 |
| 11th | 6 | Henry Zogaib / Ian James / Paul Tracy / A. J. Allmendinger | Riley Mk XI Lexus | Michael Shank Racing | 1:44.3520 |
| 12th | 75 | Colin Braun / Max Papis / J.J. Lehto | Riley Mk XI Pontiac | Krohn Racing | 1:44.5580 |
| 13th | 01 | Scott Pruett / Salvador Duran / Juan Pablo Montoya | Riley Mk XI Lexus | TELMEX Chip Ganassi with Felix Sabates | 1:44.6740 |
| 14th | 39 | Christian Fittipaldi / Eddie Cheever, Jr. / Emmanuel Collard / Sascha Maassen | Crawford DP03 Porsche | Cheever Racing | 1:44.8900 |
| 15th | 20 | Andy Wallace / Butch Leitzinger / Tony Stewart | Crawford DP03 Porsche | Howard Motorsports | 1:44.9100 |
| 16th | 77 | Memo Gidley / Fabrizio Gollin / Michel Jourdain / Oriol Servia | Doran JE4 Ford | Feeds The Need/Doran Racing | 1:44.9570 |
| 17th | 59 | J. C. France / Hurley Haywood / João Barbosa / Roberto Moreno / David Donohue | Riley Mk XI Porsche | Brumos Porsche/Kendall | 1:45.6800 |
| 18th | 61 | Brian Frisselle / Mark Wilkins / Burt Frisselle / David Empringham | Riley Mk XI Lexus | Exchange Traded Gold AIM Autosport | 1:46.4340 |
| 19th | 00 | Ed Carpenter / Tomas Scheckter / Tony George / Anthony Foyt / Stéphane Grégoire | Crawford DP03 Porsche | Vision Racing | 1:46.4870 |
| 20th | 51 | Mike Newton / Thomas Erdos / Harrison Brix / Eddie Cheever, Jr. | Fabcar FDSC/03 Porsche | Cheever Racing | 1:47.0110 |
| 21st | 18 | Uwe Alzen / Robert Renauer / Terry Borcheller / Gastón Mazzacane | Fabcar FDSC/03 Porsche | VICI Racing | 1:47.6490 |
| 22nd | 12 | Roger Schramm / Jack Baldwin / Bill Lester / Justin Bell / John Heinricy | Riley Mk XI Pontiac | RVO Motorsports | 1:47.8460 |
| 23rd | 76 | Tracy Krohn / Niclas Jönsson / Boris Said | Riley Mk XI Pontiac | Krohn Racing | 1:50.4660 |
| 24th | 81 | Steve Johnson / Richard Westbrook / Richard Lietz / Patrick Huisman | Porsche 997 GT3 Cup | Synergy Racing | 1:51.8000 |
| 25th | 74 | Eric Lux / Wolf Henzler / Dominik Farnbacher / Jim Tafel | Porsche 997 GT3 Cup | Tafel Racing | 1:52.1990 |
| 26th | 70 | David Haskell / Sylvain Tremblay / Nick Ham / Randy Pobst | Mazda RX-8 | SpeedSource | 1:52.2220 |
| 27th | 66 | Spencer Pumpelly / Richard Valentine / Andy Lally / Mark Greenberg / Kevin Buckler | Porsche 997 GT3 Cup | TRG | 1:52.2370 |
| 28th | 06 | Leighton Reese / Tim Lewis, Jr. / Johnny O'Connell / Paul Edwards | Pontiac GXP.R | Banner Racing | 1:52.4270 |
| 29th | 85 | Leh Keen / Pierre Ehret / Dirk Werner / Jörg Hardt | Porsche 997 GT3 Cup | Farnbacher Loles Motorsports | 1:52.4450 |
| 30th | 69 | Emil Assentato / Nick Longhi / Jeff Segal / Matt Plumb | Mazda RX-8 | SpeedSource | 1:52.4520 |
| 31st | 73 | Lars Nielsen / Brent Martini / Dieter Quester / Philipp Peter | Porsche 997 GT3 Cup | Tafel Racing | 1:52.5420 |
| 32nd | 88 | Craig Stanton / Bryce Miller / Antonín Charouz / Justin Jackson / Tom Pank | Porsche 997 GT3 Cup | Farnbacher Loles Motorsports | 1:52.5640 |
| 33rd | 17 | David Lacey / Greg Wilkins / Johnny Mowlem / Tom Papadopoulos / Lance Arnold | Porsche 997 GT3 Cup | Doncaster Racing | 1:52.7770 |
| 34th | 22 | Carlos de Quesada / Jean-Francois Dumoulin / Scooter Gabel / Marc Basseng | Porsche 997 GT3 Cup | Alegra Motorsports/ Fiorano Racing | 1:52.7900 |
| 35th | 87 | Christian Zugel / John Burke / Gunnar Jeannette / Ryan Eversley | Porsche 997 GT3 Cup | Farnbacher Loles Motorsports | 1:52.8000 |
| 36th | 16 | Chris Dyson / Rob Dyson / Guy Smith / Oliver Gavin | Crawford DP03 Porsche | Howard Motorsports | 1:52.9360 |
| 37th | 84 | George Robinson / Wally Dallenbach, Jr. / Paul Dallenbach / Katherine Legge | Riley Mk XI Pontiac | Robinson Racing | 1:52.9400 |
| 38th | 72 | Andrew Davis / Nathan Swartzbaugh / Dirk Müller / Robin Liddell / Jim Tafel | Porsche 997 GT3 Cup | Tafel Racing | 1:52.9720 |
| 39th | 07 | Paul Edwards / Kelly Collins / Andy Pilgrim / Johnny O'Connell | Pontiac GXP.R | Banner Racing | 1:52.9860 |
| 40th | 86 | Larry Bowman / Don Bell / Lance Willsley / Shawn Price | Porsche 997 GT3 Cup | Farnbacher Loles Motorsports | 1:53.3390 |
| 41st | 28 | Ian Baas / Joel Feinberg / Bruce McQuiston / Joseph Safina | Porsche 997 GT3 Cup | At Speed Motorsports | 1:53.4520 |
| 42nd | 64 | Jim Lowe / Jim Pace / Johannes Van Overbeek / Ralf Kelleners | Porsche 997 GT3 Cup | TRG | 1:53.4810 |
| 43rd | 63 | Dennis Spencer / Scott Spencer / Rich Grupp / Gary Drummond / Charles Espenlaub | Mazda RX-8 | Team Spencer Motorsports | 1:53.8820 |
| 44th | 57 | Dominic Cicero / Marc Bunting / James Gue / John Stevenson / Lou Gigliotti | Chevrolet Corvette | Stevenson Motorsports | 1:54.1110 |
| 45th | 27 | Kevin O'Connell / Mike Speakman / Jason Bowles / Kevin Roush / Lonnie Pechnik | Porsche 996 GT3 Cup | O'Connell Racing | 1:54.1700 |
| 46th | 15 | Tom Nastasi / Alex Tagliani / Guy Cosmo / Valerie Limoges | Ford Mustang Cobra GT | Blackforest Motorsports | 1:54.2300 |
| 47th | 89 | Fraser Wellon / Barry Ellis / Frank Rossi / Michael Grande / Owen Trinkler | Porsche 997 GT3 Cup | Autometrics Motorsports | 1:54.6360 |
| 48th | 14 | Bransen Patch / Mac McGehee / Wes Allen / Jim Hamblin / Cory Friedman | Porsche 996 GT3 Cup | Autometrics Motorsports | 1:54.8100 |
| 49th | 65 | Murray Marden / Brent Milner / John Peterson / Michael Gomez | Porsche 997 GT3 Cup | TRG | 1:55.2860 |
| 50th | 21 | Matt Connolly / Adam Pecorari / Jason Workman / Ray Mason / Romeo Kapudija | BMW M3 E46 | Matt Connolly Motorsports | 1:55.4810 |
| 51st | 68 | Ted Ballou / Rocco DeSimone II / Brad Jaeger / Chris Gleason | Porsche 997 GT3 Cup | TRG | 1:56.0630 |
| 52nd | 52 | Luca Drudi / Gabrio Rosa / Andrea Ceccato / Pierangelo Masselli / Andrea Montermini | Ferrari 360 Modena Challenge | Mastercar | 1:56.0920 |
| 53rd | 83 | Dave Gaylord / Don Pickering / Hal Hilton / Ben McCrackin | Porsche 997 GT3 Cup | Synergy Racing | 1:56.4500 |
| 54th | 67 | Tom Cloet / Piere Bourque / Mike Solley / Auston Harris | Porsche 997 GT3 Cup | TRG | 1:56.8620 |
| 55th | 08 | Steve Goldin / Keith Goldin / John Finger / Ron Zitza | Mazda RX-8 | Goldin Brothers Racing | 1:57.0790 |
| 56th | 46 | Michael Baughman / Bryan Collyer / John Connolly / Mike Yeakle / Frank Del Vecchio | Chevrolet Corvette | Michael Baughman Racing | 1:58.1740 |
| 57th | 43 | Joe Sahlen / Joe Nonnamaker / Will Nonnamaker / Wayne Nonnamaker | Chevrolet Corvette | Team Sahlen | 1:58.6820 |
| 58th | 48 | Hans Hauser / Robert Dubler / Ed Magner / Michael DeFontes | Chevrolet Corvette | WTF Engineering | 1:58.8640 |
| 59th | 42 | Michael Auriemma / John Mayes / David Kaemmer / Chris Willcox / Matt Varsha | Porsche 996 GT3 Cup | Team Sahlen | 1:58.9920 |
| 60th | 41 | Robb Brent / Tom Malloy / Jim Michaelian / Bob Michaelian / Ernie Becker | Porsche 996 GT3 Cup | Team Sahlen | 2:01.1230 |
| 61st | 24 | Mike Pickett / Bill Cotter / Mark Montgomery / Todd Hanson / Rich Walker | BMW M3 E46 | Matt Connolly Motorsports | 2:01.1400 |
| 62nd | 7 | Chris Festa / Tomáš Enge / Christian Montanari / Roger Yasukawa / Kris Szekeres | Riley Mk XI Pontiac | SAMAX | 3:04.3710 |
| 63rd | 3 | Shane Lewis / Randy Ruhlman / Graham Rahal / Elliot Forbes-Robinson | Riley Mk XI BMW | Southard Motorsports | 3:13.0020 |
| 64th | 60 | Mark Patterson / Oswaldo Negri / Helio Castroneves / Sam Hornish, Jr. | Riley Mk XI Lexus | Michael Shank Racing | no time |
| 65th | 29 | Anthony Puleo / Squeak Kennedy / Ray Webb / Thompson | Nissan 350Z | Extreme Motorsports Group | no time |
| 66th | 30 | Lawson Aschenbach / Justin Lofton / Ross Smith / Mark Pavan | Pontiac GXP.R | Racers Edge Motorsports | no time |
| 67th | 35 | Tommy Constantine / Mike Borkowski / David Murry / Hal Prewitt | Porsche 997 GT3 Cup | Playboy Racing/Unitech | no time |
| 68th | 45 | Rob Wilson / John Lewis / Bryan Sellers / Joey Hand | Infiniti G35 | Howard Motorsports | no time |
| 69th | 49 | Joe Sahlen / Joe Nonnamaker / Will Nonnamaker / Wayne Nonnamaker | Chevrolet Corvette | Team Sahlen | no time |
| 70th | 82 | Don Kitch / Chris Pennington / Chris Pallis / Tony Bawcutt | Porsche 997 GT3 Cup | Synergy Racing | no time |
| 71st | 97 | Vic Rice / Tommy Riggins / John Stevenson / Spencer Trenery / Lou Gigliotti | Chevrolet Corvette | Stevenson Motorsports | no time |