| 0 | Naspetti / Schiattarella / Papis | Team Olive Garden (I) | | Ferrari | 550 Maranello | | Ferrari | GTS |
| 1 | Pirro / Biela | Audi Sport North America (D) | | Audi | R8 | | Audi | LMP900 |
| 2 | Capello / Kristensen | Audi Sport North America (D) | | Audi | R8 | | Audi | LMP900 |
| 3 | Fellows / O'Connell / Gavin | Corvette Racing (USA) | | Chevrolet | Corvette C5 | -R | Chevrolet | GTS |
| 4 | Collins / Pilgrim / Fréon | Corvette Racing (USA) | | Chevrolet | Corvette C5 | -R | Chevrolet | GTS |
| 7 | Collard / Bernard / *Taylor | Team Cadillac (USA) | | Cadillac | Northstar LMP 02 | | Cadillac | LMP900 |
| 8 | Lehto / Angelelli / *Tinseau | Team Cadillac (USA) | | Cadillac | Northstar LMP 02 | | Cadillac | LMP900 |
| 10 | Gleason / Assentato / Longhi | Alegra Motorsports (USA) | Emil Assentato | BMW | M3 | E46 GT | BMW | GT |
| 11 | Lally / Block / *Knight | KnightHawk Racing, LLC (USA) | | Lola | EX257 | | AER | LMP675 |
| 13 | Devlin / Workman / Forgeois | Archangel Motorsports (USA) | Michael Johnson | Lola | B2K/40 | | Ford | LMP675 |
| 15 | Nielsen / Elgaard | R.N. Motorsports, Ltd. (GB) | | Reynard | 02S | | Zytek | LMP675 |
| 16 | Weaver / Leitzinger / Wallace | Dyson Racing Team, Inc (USA) | | Lola | EX257 | | AER | LMP675 |
| 21 | Derichebourg / Barretto / Perrier | Perspective USA Corporation (F) | | Porsche | 996 GT3-RS | | Porsche | GT |
| 22 | Bernhard / Bergmeister / Lieb | Alex Job Racing (USA) | | Porsche | 996 GT3-RS | | Porsche | GT |
| 23 | Maassen / Luhr | Alex Job Racing (USA) | Alex Job | Porsche | 996 GT3-RS | | Porsche | GT |
| 24 | Daoudi / Downing / Terada | AutoExe Motorsports (J) | | WR | LMP-02 | (AutoExe) | Mazda | LMP675 |
| 25 | Slater / Yvon / Murphy | Konrad Motorsport (D) | | Saleen | S7-R | | Ford | GTS |
| 26 | Seiler / Konrad / Borcheller | Konrad Motorsport (D) | | Saleen | S7-R | | Ford | GTS |
| 27 | Vann / Pompidou / Duno | Chamberlain (GB) | | Dome | S101 | | Judd | LMP900 |
| 29 | von Gartzen / Dean / Hayden | Sebah Automotive Limited (GB) | | Porsche | 996 GT3-R | | Porsche | GT |
| 30 | Field / Neuhaus / Miller | Intersport Racing (USA) | | Lola | B2K/10 | B | Judd | LMP900 |
| 31 | Mowlem / Pobst / *Petersen | Petersen Motorsports (USA) | | Porsche | 996 GT3-RS | | Porsche | GT |
| 33 | Kox / Menu / Enge | Prodrive (GB) | | Ferrari | 550 Maranello | GTS | Ferrari | GTS |
| 34 | Stanton / Plumb / Vannelet | XL Racing (F) | | Ferrari | 550 Maranello | | Ferrari | GT |
| 35 | Lazzaro / Kelleners | Risi Competizione (USA) | | Ferrari | 360 Modena | GT | Ferrari | GT |
| 36 | Goossens / Ave / *Matthews | Riley & Scott Racing (USA) | | Riley & Scott | Mk III C | | Elan | LMP900 |
| 37 | Field / Dayton / Durand | Intersport Racing (USA) | | Lola | EX257 | | AER | LMP675 |
| 38 | Herbert / Johansson | Champion Racing (USA) | Dave Maraj | Audi | R8 | | Audi | LMP900 |
| 40 | Said / Gabel / de Quesada | Alegra Motorsports (USA) | | BMW | M3 | E46 GT | BMW | GT |
| 42 | Schultheis / Policastro / Policastro, Jr. | Orbit (USA) | | Porsche | 996 GT3-RS | | Porsche | GT |
| 43 | Baron / Kester / Hindery | Orbit (USA) | | Porsche | 996 GT3-RS | | Porsche | GT |
| 44 | Bunting / *Weickardt / *Belloc | American Viperacing (USA) | | Dodge | Viper | GTS-R | Dodge | GTS |
| 45 | Hezemans / Babini / Franchitti | American Viperacing (USA) | | Dodge | Viper | GTS-R | Dodge | GTS |
| 50 | Magnussen / Brabham / Donohue | Panoz Motor Sports (USA) | Don Panoz | Panoz | LMP 01 | | Elan | LMP900 |
| 51 | Herta / Auberlen / Jeannette | Panoz Motor Sports (USA) | Don Panoz | Panoz | LMP 01 | | Elan | LMP900 |
| 52 | Burgess / Collin / Willingham | Seikel Motorsport (D) | Peter Seikel | Porsche | 996 GT3-RS | | Porsche | GT |
| 55 | Ehret / Paterson / Olsen | Team Bucknum Racing (USA) | | Pilbeam | MP84 | | Nissan | LMP675 |
| 56 | Bucknum / Willman / McMurry | Team Bucknum Racing (USA) | | Pilbeam | MP84 | | Nissan | LMP675 |
| 60 | Peter / Foster / Anapoli | P.K. Sport LTD (GB) | | Porsche | 996 GT3-R | | Porsche | GT |
| 61 | Liddell / Masarati / *Pickering | P.K. Sport LTD (GB) | Mike Pickup | Porsche | 996 GT3-RS | | Porsche | GT |
| 62 | Grupp / Hampton / *Spencer | Team Spencer Motorsports (USA) | | Lola | B2K/40 | | Mazda | LMP675 |
| 66 | Buckler / Schrom / Cunningham | The Racer's Group (USA) | | Porsche | 996 GT3-RS | | Porsche | GT |
| 67 | Kevin Buckler | The Racer's Group (USA) | | Porsche | 996 GT3-RS | | Porsche | GT |
| 73 | Earl Goddard | Archangel Motorsports (GB) | | Reynard | 01Q | | Ford | LMP675 |
| 74 | Goddard / Mefford / Davis | Archangel Motorsports (GB) | | Reynard | 01Q | | Ford | LMP675 |
| 79 | Fitzgerald / Jackson / *McMurry | J3 Racing (USA) | | Porsche | 996 GT3-RS | | Porsche | GT |
| 83 | Rice / Newton / Balfe | Graham Nash Motorsport (GB) | | Saleen | S7-R | | Ford | GTS |
| 84 | Erdos / Barff / Liddell | Graham Nash Motorsport (GB) | | Saleen | S7-R | | Ford | GTS |
| 87 | Roussel / Schroeder / Mirro | Sezio Florida Racing Team (USA) | | Norma | M2000 | -02 | Ford | LMP900 |
| 98 | Ortelli / Bouchut | Cirtek Motorsport (USA) | | Porsche | 996 GT3-R | | Porsche | GT |