| 1 | Lehto / Werner / Kristensen | ADT/Champion Racing (USA) | Dave Maraj | Audi | R8 | | Audi | LMP1 |
| 2 | Pirro / Biela / McNish | ADT/Champion Racing (USA) | Dave Maraj | Audi | R8 | | Audi | LMP1 |
| 3 | Fellows / O'Connell / Papis | Corvette Racing (USA) | Doug Fehan | Chevrolet | Corvette C6 | .R Z06 | Chevrolet | GT1 |
| 4 | Gavin / Beretta / Magnussen | Corvette Racing (USA) | Doug Fehan | Chevrolet | Corvette C6 | .R Z06 | Chevrolet | GT1 |
| 5 | Dalziel / Figge / Empringham | Pacific Coast Motorsports (USA) | Tyler Tadevic | Chevrolet | Corvette C5 | -R | Chevrolet | GT1 |
| 10 | Bucknum / McMurry / James | Miracle Motorsports, Inc. (USA) | John Macaluso | Courage | C65 | | AER | LMP2 |
| 12 | Lewis / Drissi / Willman | Autocon Motorsports (USA) | Michael Lewis | Riley & Scott | Mk III C | | Elan | LMP1 |
| 15 | Binnie / *Julien / *Sharpe | Binnie Motorsports (USA) | William Binnie | Lola | B05/40 | -42 | NME | LMP2 |
| 16 | Weaver / Wallace / Leitzinger | Dyson Racing Team (USA) | Rob Dyson | Lola | EX257 | | AER | LMP1 |
| 20 | Smith / Dyson | Dyson Racing Team (USA) | Rob Dyson | Lola | EX257 | | AER | LMP1 |
| 23 | Bernhard / Dumas / Maassen | Alex Job Racing (USA) | Alex Job | Porsche | 996 GT3-RSR | | Porsche | GT2 |
| 24 | Pobst / Baas / Cunningham | Alex Job Racing (USA) | Alex Job | Porsche | 996 GT3-RSR | | Porsche | GT2 |
| 27 | Mitchell / Bennett / Primat | Kruse Motorsport (D) | Kai Kruse | Courage | C65 | | Judd | LMP2 |
| 30 | Field / Halliday / Ridpath | Telessis Intersport Racing (USA) | Jon Field | Lola | B2K/40 | | Judd | LMP2 |
| 31 | Bergmeister / Luhr / Long / *Petersen | Petersen Motorsports/White Lightning Racing (USA) | Michael Petersen | Porsche | 996 GT3-RSR | | Porsche | GT2 |
| 34 | Lally / Pumpelly / Ivankovich | ZIP Racing (USA) | Steve Ivankovich | Porsche | 996 GT3-R | | Porsche | GT2 |
| 35 | Bertolini / de Simone / Babini | Maserati Corse (I) | Claudio Berro | Maserati | MC12 | | Maserati | GT1 |
| 37 | Field / Dayton / Fisken | Telessis Intersport Racing (USA) | Jon Field | Lola | B05/40 | | AER | LMP2 |
| 40 | Kane / Tomlinson / Hughes | Team LNT - Magic (GB) | Lawrence Tomlinson | TVR | Tuscan | T400R | TVR | GT2 |
| 41 | Dean / Pearce / Hynes | Team LNT - Magic (GB) | Lawrence Tomlinson | TVR | Tuscan | T400R | TVR | GT2 |
| 43 | Rockenfeller / Jensen / Burgess | BAM! (USA) | Tim Munday | Porsche | 996 GT3-RSR | | Porsche | GT2 |
| 44 | Pechnik / Murry / *Neiman | Flying Lizard Motorsports (USA) | Johannes van Overbeek | Porsche | 996 GT3-RSR | | Porsche | GT2 |
| 45 | Fogarty / Van Overbeek / Law | Flying Lizard Motorsports (USA) | Johannes van Overbeek | Porsche | 996 GT3-RSR | | Porsche | GT2 |
| 47 | van Merksteijn / *Munsterhuis / *Franchitti | Spyker Squadron (NL) | Victor Muller | Spyker | C8 Spyder GT2R | | Audi | GT2 |
| 48 | Coronel / Goossens / Crevels | Spyker Squadron (NL) | Victor Muller | Spyker | C8 Spyder GT2R | | Audi | GT2 |
| 50 | Auberlen / Liddell / Naspetti | Panoz Motor Sports (USA) | Don Panoz | Panoz | Esperante | GTLM | Ford | GT2 |
| 51 | Jeannette / Sellers / Maxwell | Panoz Motor Sports (USA) | Don Panoz | Panoz | Esperante | GTLM | Elan | GT2 |
| 57 | Turner / Brabham / Ortelli | Aston Martin Racing (GB) | David Richards | Aston Martin | DBR9 | | Aston Martin | GT1 |
| 58 | Lamy / Kox / Sarrazin | Aston Martin Racing (GB) | David Richards | Aston Martin | DBR9 | | Aston Martin | GT1 |
| 63 | Mowlem / Borcheller / Kelleners | ACEMCO Motorsports, LLC. (USA) | Jeff Giangrande | Saleen | S7-R | | Ford | GT1 |
| 66 | Cawley / Sluszny / Krohn | TRG (USA) | Kevin Buckler | Porsche | 996 GT3-RSR | | Porsche | GT2 |
| 67 | Ehret / *Buckler / *Davis | TRG (USA) | Kevin Buckler | Porsche | 996 GT3-RSR | | Porsche | GT2 |
| 71 | Belloc / Rugolo / Weickardt | Carsport America (USA) | Tom Weickardt | Dodge | Viper | GTS-R | Dodge | GT1 |
| 78 | Niclas Jönsson | J3 Racing, Inc. (USA) | Jaye M. Jackson | Porsche | 996 GT3-RS | | Porsche | GT2 |
| 79 | Sugden / Jönsson / *Jackson | J3 Racing, Inc. (USA) | Jaye M. Jackson | Porsche | 996 GT3-RSR | | Porsche | GT2 |
| 83 | Smith / Sutherland / Cole | Graham Nash Motorsport (GB) | Graham Nash | Saleen | S7-R | | Ford | GT1 |
| 86 | Bouchut / Gollin / Bourdais | Care Racing - Larbre (F) | Jack Leconte | Ferrari | 550 Maranello | GTS | Ferrari | GT1 |
| 88 | Barbosa / Theys / Krumm | Rollcentre Racing (GB) | Martin Short | Dallara | SP1 | | Nissan | LMP1 |
| 96 | Vergers / Barazi / Thompson | IN2 Racing (GB) | Alec Dudfield | Porsche | 996 GT3-RSR | | Porsche | GT2 |