| 00 | Bouchut / Goueslard / Dumez / *Chéreau | Larbre Competition (F) | | Porsche | 996 GT3-RS | | Porsche | GT |
| 07 | Peter / Simon / Quester | RWS Motorsport (D) | | Porsche | 996 GT3-R | | Porsche | GT |
| 09 | Alexander / Pickering / Gleason | Cirtek Motorsport (USA) | | Porsche | 996 GT3-R | | Porsche | GT |
| 1 | Capello / Alboreto / Aiello | Audi Sport North America (D) | | Audi | R8 | | Audi | LMP900 |
| 2 | Biela / Pirro / Kristensen | Audi Sport North America (D) | | Audi | R8 | | Audi | LMP900 |
| 3 | Fellows / O'Connell / Kneifel | Corvette Racing (USA) | | Chevrolet | Corvette C5 | -R | Chevrolet | GTS |
| 4 | Collins / Pilgrim / Fréon | Corvette Racing (USA) | | Chevrolet | Corvette C5 | -R | Chevrolet | GTS |
| 5 | | Dick Barbour Racing (USA) | | Porsche | 996 GT3-R | | Porsche | GT |
| 6 | Said / Stuck / Cunningham | Prototype Technology Group (USA) | | BMW | M3 | E46 GT | BMW | GT |
| 10 | Auberlen / Jönsson / *Hand | Prototype Technology Group (USA) | | BMW | M3 | E46 GT | BMW | GT |
| 11 | Hürtgen / Hawkins / Knight | Roock-KnightHawk Racing (USA) | | Lola | B2K/40 | | Nissan | LMP675 |
| 12 | Lewis / Rice / *Mazzuoccola | Aspen Knolls/MCR (USA) | | Callaway | C12-R | | Chevrolet | GT |
| 15 | Willingham / Neuhaus / Wars | Dick Barbour Racing (USA) | | Porsche | 996 GT3-R | | Porsche | GT |
| 16 | Leitzinger / Forbes-Robinson / Weaver | Dyson Racing (USA) | | Riley & Scott | Mk III C | | Lincoln | LMP900 |
| 17 | Trinkler / Lally / Zacharias | Trinkler Racing, LLC (USA) | | Chevrolet | Corvette C5 | LMGT | Chevrolet | GT |
| 18 | Johansson / Smith | Johansson Motorsport (GB) | Stefan Johansson | Audi | R8 | | Audi | LMP900 |
| 22 | Pobst / Menzel / Bernhard | Alex Job Racing (USA) | Alex Job | Porsche | 996 GT3-RS | | Porsche | GT |
| 23 | Maassen / Collard / Luhr | Alex Job Racing (USA) | | Porsche | 996 GT3-RS | | Porsche | GT |
| 26 | Gavin / Konrad / Borcheller | Konrad Team Saleen (D) | | Saleen | S7-R | | Ford | GTS |
| 30 | Wollek / Mowlem / Petersen | Petersen Motorsports (USA) | | Porsche | 996 GT3-RS | | Porsche | GT |
| 34 | Baron / Hindery / Buitoni | Orbit (USA) | | Porsche | 996 GT3-RS | | Porsche | GT |
| 35 | Byrne / Millman / Kester | Orbit (USA) | Rodger Hawley | Porsche | 996 GT3-RS | | Porsche | GT |
| 36 | Alzen / Richter | Jürgen Alzen Motorsport (D) | | Porsche | 996 GT3-RS | | Porsche | GT |
| 37 | Field / Dayton / Sutherland | Intersport Racing (USA) | | Lola | B2K/10 | | Judd | LMP900 |
| 38 | Wallace / Schroeder / Kelleners | Champion Racing (USA) | Dave Maraj | Audi | R8 | | Audi | LMP900 |
| 42 | Lehto / Müller | BMW Motorsport (D) | | BMW | M3 | E46 GTR | BMW | GT |
| 43 | Ekblom / Müller | BMW Motorsport (D) | | BMW | M3 | E46 GT | BMW | GT |
| 44 | Pardoe / Weickardt / Ellis | American Viperacing (USA) | | Dodge | Viper | GTS-R | Dodge | GTS |
| 45 | Messley / Altenburg / Hayner | American Viperacing (USA) | | Dodge | Viper | GTS-R | Dodge | GTS |
| 47 | Warner / Orti / Ziegelman | Broadfoot Racing (USA) | | Porsche | 996 GT3-R | | Porsche | GT |
| 50 | Magnussen / Brabham | Panoz Motor Sports (USA) | Don Panoz | Panoz | LMP07 | | Elan | LMP900 |
| 51 | Graf / Salles | Panoz Motor Sports (USA) | Don Panoz | Panoz | LMP07 | | Elan | LMP900 |
| 52 | Burgess / Bagnall / *Collin | Seikel Motor Sport (D) | Peter Seikel | Porsche | 996 GT3-RS | | Porsche | GT |
| 53 | Caffi / Babini / Rosa | Seikel Motor Sport (D) | Peter Seikel | Porsche | 996 GT3-RS | | Porsche | GT |
| 57 | Smith / Horn | Freisinger Motorsport (D) | | Porsche | 996 GT3-R | | Porsche | GT |
| 58 | Kaufmann / Ortelli | Freisinger Motorsport (D) | | Porsche | 996 GT3-RS | | Porsche | GT |
| 66 | Buckler / McGlynn / Earle | The Racers Group (USA) | Kevin Buckler | Porsche | 996 GT3-RS | | Porsche | GT |
| 69 | Foster / Wankum / Pabst | Kyser Racing (CDN) | | Porsche | 996 GT3-R | | Porsche | GT |
| 72 | Boullion / Bourdais / Redon | Pescarolo Sport (F) | | Courage | C60 | | Peugeot | LMP900 |
| 77 | Jackson / Jeannette / Adam | Gunnar Racing (USA) | | Lola | B2K/40 | | Porsche | LMP675 |
| 98 | Wagner / Law / *Polk | Kelly-Moss Motorsports (USA) | | Porsche | 996 GT3-R | | Porsche | GT |
| 99 | Murry / Lazzaro / *Sospiri | Kelly-Moss Motorsports (USA) | | Porsche | 996 GT3-RS | | Porsche | GT |