| 00 | Abergel / Collard / Jones / Lisa / Pompidou | Aten Motorsports | Tony Dowe | Ferrari | F430 | Challenge | Ferrari | GT |
| 01 | Pruett / Rojas / Rahal / Hand | Chip Ganassi Racing with Felix Sabates (USA) | Mike Hull | Riley | Mk XX | | BMW | DP |
| 02 | Dixon / Montoya / Franchitti / McMurray | Chip Ganassi Racing with Felix Sabates (USA) | Mike Hull | Riley | Mk XX | | BMW | DP |
| 07 | Ledoux / Curran / Schaldach / Gavin | Banner Racing | Leighton Reese | Chevrolet | Camaro | GT.R | Chevrolet | GT |
| 2 | Popow / Potolicchio / Iannetta / Viso | Starworks Motorsport | Peter Baron | Riley | Mk XI | | Ford | DP |
| 4 | Eversley / Graeff / Wallace / Yarab, Jr. / Zahn | TRG (USA) | Kevin Buckler | Porsche | 997 GT3 Cup | | Porsche | GT |
| 5 | Law / Donohue / Rice / Frisselle | Action Express Racing | Robert Johnson | Riley | Mk XI | | Porsche | DP |
| 6 | Allmendinger / McDowell / Wilson | Michael Shank Racing with Curb/ Agajanian | Michael Shank | Dallara | DP01 | | Ford | DP |
| 7 | Peterson / Valentine / Beyer / Mayer / Heylen | Starworks Motorsport | Peter Baron | Riley | Mk XX | | Ford | DP |
| 8 | Forest / Dalziel / Lowe / Braun / Enge | Starworks Motorsport | Peter Baron | Riley | Mk XX | | Ford | DP |
| 9 | France / Barbosa / Borcheller / Fittipaldi / Papis | Action Express Racing | Robert Johnson | Riley | Mk XI | | Porsche | DP |
| 10 | Angelelli / Taylor / Briscoe / *Taylor | SunTrust Racing | Simon Hodgson | Dallara | DP01 | | Chevrolet | DP |
| 11 | Empringham / Maxwell / Nastasi / Russell | TPN Racing/Blackforest | Tom Nastasi | Ford | Mustang | Boss 302 | Ford | GT |
| 17 | Burtin / Ragginger / Tandy / Armindo / *Baldwin | Burtin Racing | Claudio Burtin | Porsche | 997 GT3 Cup | | Porsche | GT |
| 18 | Thomas / Ludwig / von Moltke / Friedman | Muehlner Motorsport | Bernard Muehlner | Porsche | 997 GT3 Cup | | Porsche | GT |
| 22 | O'Young / Walker / Wong / Lux | Bullet Racing | Steve Paquette | Porsche | 997 GT3 Cup | | Porsche | GT |
| 23 | Brundle / Brown / Patterson / Blundell | United Autosports with Michael Shank Racing | Michael Shank | Riley | Mk XX | | Ford | DP |
| 30 | Rettich / Jensen / Marsal / Jensen / Buford | Racers Edge Motorsports | Jon Mirachi | Mazda | RX-8 | | Mazda | GT |
| 32 | Cheng / Papadopoulos / Lewis / Hyatt | PR1 Motorsports | Bobby Oergel | BMW | M6 | | BMW | GT |
| 36 | Hacquard / Cumming / Miller / Marks | Yellow Dragon Motorsports | Jack Smith | Mazda | RX-8 | | Mazda | GT |
| 40 | Foster / Dempsey / Espenlaub / Long | Dempsey Racing | Joe Foster | Mazda | RX-8 | | Mazda | GT |
| 41 | Gue / Cameron / James / Lacey / *Kitch | Dempsey Racing | Joe Foster | Mazda | RX-8 | | Mazda | GT |
| 42 | Nonnamaker / Nonnamaker / Nonnamaker / Gidley / *Sahlen | Team Sahlen | Jon Chapman | Mazda | RX-8 | | Mazda | GT |
| 43 | Sahlen / *Nonnamaker / *Nonnamaker / *Nonnamaker / *Gidley | Team Sahlen | Jon Chapman | Mazda | RX-8 | | Mazda | GT |
| 44 | Potter / Holzer / Stanton / Lietz | Magnus Racing | John Potter | Porsche | 997 GT3 Cup | | Porsche | GT |
| 45 | Bergmeister / Van Overbeek / Neiman / Long | Flying Lizard Motorsports | Eric Ingraham | Riley | Mk XI | | Porsche | DP |
| 47 | Earnhardt / Monroe / Harrington / Hull / Sandberg | Rick Ware Racing | Rick Ware | Porsche | 997 GT3 Cup | | Porsche | GT |
| 48 | Miller / Sugden / Bell / Sellers | Paul Miller Racing | Ali Dunn | Porsche | 997 GT3 Cup | | Porsche | GT |
| 53 | Michaelian / Doyle / Mulligan / Castellano / Dobson | TRG/Nadeau Motorsports (USA) | John Potter | Porsche | 997 GT3 Cup | | Porsche | GT |
| 54 | Bleekemolen / Pappas / Pilet / Sofronas / *Curtis | TRG/Black Swan Racing/GMG Racing (USA) | Kevin Buckler | Porsche | 997 GT3 Cup | | Porsche | GT |
| 55 | Tucker / Diaz / Bouchut / Wilkins | Level 5 Motorsports | David Stone | Riley | Mk XX | | BMW | DP |
| 56 | Skeen / Dumoulin / Davidson / Geddie / Harrington / *Allen | Bennett Racing | Skip Bennett IV | Ferrari | F430 | Challenge | Ferrari | GT |
| 57 | Liddell / Bremer / Magnussen | Stevenson Motorsports | John Stevenson | Chevrolet | Camaro | GT.R | Chevrolet | GT |
| 59 | Haywood / Davis / Keen / Lieb | Brumos Racing | Dan Davis | Porsche | 997 GT3 Cup | | Porsche | GT |
| 60 | Pew / Negri / Goossens / Valiante | Michael Shank Racing | Michael Shank | Riley | Mk XX | | Ford | DP |
| 63 | Grupp / Murry / Downing / Trinkler / *Spencer | Team Spencer Motorsports | Ron Doyle | Mazda | RX-8 | | Mazda | GT |
| 65 | Sweedler / Lewis / Sheehan / Pagerey | Chris Smith Racing | Christopher Smith | Porsche | 997 GT3 Cup | | Porsche | GT |
| 66 | Farnbacher / George, Jr. / Luhr / Keating | TRG (USA) | Kevin Buckler | Porsche | 997 GT3 Cup | | Porsche | GT |
| 67 | Pumpelly / Bertheau / Gaughan / Henzler / Lally | TRG (USA) | Kevin Buckler | Porsche | 997 GT3 Cup | | Porsche | GT |
| 69 | Assentato / Segal / Ham / Lazzaro / *Longhi | SpeedSource | Sylvain Tremblay | Mazda | RX-8 | | Mazda | GT |
| 70 | Edwards / Christodoulou / Tremblay / Bomarito | SpeedSource | Sylvain Tremblay | Mazda | RX-8 | | Mazda | GT |
| 76 | Krohn / Jönsson / Zonta / Minassian | Krohn Racing | David Brown | Lola | B08/70 | | Ford | DP |
| 77 | Frisselle / Richard / Bell / Kaiser | Doran Racing (USA) | Kevin Doran | Dallara | DP01 | | Ford | DP |
| 81 | Wagner / Poordad / Baron / Jones | DragonSpeed | Elton Julian | Ferrari | F430 | Challenge | Ferrari | GT |
| 86 | Atterbury / MacNeil / Pobst / Whitis | Mitchum Motorsports | Chris Mitchum | Porsche | 997 GT3 Cup | | Porsche | GT |
| 88 | Taylor / Lester / O'Connell / Marsh | Autohaus Motorsports | Theresa Conder | Chevrolet | Camaro | GT.R | Chevrolet | GT |
| 90 | Garcia / Edwards / Maassen | Spirit of Daytona Racing | Troy Flis | Coyote | CC/09 | | Chevrolet | DP |
| 94 | Auberlen / Said / Dalla Lana / Plumb | Turner Motorsport | Will Turner | BMW | M3 | | BMW | GT |
| 95 | Tucker / Hunter-Reay / Westbrook / Matos | Level 5 Motorsports | David Stone | Riley | Mk XX | | BMW | DP |
| 99 | Gurney / Fogarty / Johnson | GAINSCO/Bob Stallings Racing | Bob Stallings | Riley | Mk XX | | Chevrolet | DP |