Season results
Overall winner in bold.
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Three circuits were added to the 2004 schedule, replacing three events which did not return from 2003. The sprint event at Road Atlanta along with Circuit Trois-Rivières and the Miami, Florida street circuit were removed, while Mid-Ohio Sports Car Course and Portland International Raceway both returned once again. These were joined by the addition of Lime Rock Park. The removal of Trois-Rivières rendered Mosport as the only race outside the United States.
| Rnd | Race | Circuit | Date |
|---|---|---|---|
| 1 | Mobil 1 12 Hours of Sebring | Sebring Raceway | March 20 |
| 2 | American Le Mans at Mid-Ohio | Mid-Ohio | June 27 |
| 3 | New England Grand Prix | Lime Rock Park | July 5 |
| 4 | Infineon Grand Prix of Sonoma | Infineon Raceway | July 18 |
| 5 | Portland Grand Prix | Portland International Raceway | July 25 |
| 6 | Toronto Grand Prix of Mosport | Mosport | August 8 |
| 7 | Road America 500 | Road America | August 22 |
| 8 | Chevy presents Petit Le Mans | Road Atlanta | September 25 |
| 9 | Audi Sports Car Championships | Mazda Raceway Laguna Seca | October 16 |
| Sources: [1] [2] | |||
Overall winner in bold.
Points are awarded to the top 10 finishers in the following order: [4]
Exceptions were for the 4 Hour Monterey Sports Car Championships was scored in the following order:
And for the 12 Hours of Sebring and Petit Le Mans which award the top 10 finishers in the following order:
Cars failing to complete 70% of the winner's distance are not awarded points. Teams only score the points of their highest finishing entry in each race.
| Pos | Team | Chassis | Engine | Rd 1 | Rd 2 | Rd 3 | Rd 4 | Rd 5 | Rd 6 | Rd 7 | Rd 8 | Rd 9 | Total |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 |  ADT Champion Racing | Audi R8 | Audi 3.6L Turbo V8 | 22 | 20 | 20 | 20 | 20 | 16 | 20 | 26 | 19 | 183 |
| 2 | Dyson Racing | MG-Lola EX257 | MG (AER) XP20 2.0L Turbo I4 | 14 | 16 | 16 | 16 | 16 | 20 | 19 | 16 | 133 | |
| 3 |  Audi Sport UK Team Veloqx | Audi R8 | Audi 3.6L Turbo V8 | 26 | 26 | ||||||||
| 4 | Intersport Racing | Riley & Scott Mk III C Lola B01/60 | Élan 6L8 6.0L V8 Judd KV675 3.4L V8 | 9 | 16 | 25 | |||||||
| 5 | Rollcentre Racing | Dallara SP1 | Judd GV4 4.0L V10 | 16 | 16 | ||||||||
| 6 | Autocon Motorsports | Riley & Scott Mk III C | Lincoln (Élan) 5.0L V8 | 12 | 12 | ||||||||
| 7 |  Larbre Compétition | Panoz GTP | Élan 6L8 6.0L V8 | 10 | 10 |
| Pos | Team | Chassis | Engine | Rd 1 | Rd 2 | Rd 3 | Rd 4 | Rd 5 | Rd 6 | Rd 7 | Rd 8 | Rd 9 | Total |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Miracle Motorsports | Lola B2K/40 Courage C65 | Nissan (AER) VQL 3.0L V6 MG (AER) XP20 2.0L Turbo I4 | 26 | 13 | 20 | 16 | 16 | 16 | 20 | 19 | 146 | |
| 2 | Intersport Racing | Lola B2K/40 | Judd KV675 3.4L V8 | 20 | 20 | 20 | 20 | 26 | 23 | 129 | |||
| 3 | Marshall Cooke Race Car Company | Lola B2K/40 | Ford (Millington) 2.0L Turbo I4 | 16 | 16 | 22 | 54 | ||||||
| 4 | Rand Racing | Lola B2K/40 | Nissan (AER) VQL 3.0L V6 | 22 | 22 | ||||||||
| 5 | Team Bucknum | Pilbeam MP91 | Nissan (AER) VQL 3.0L V6 Willman 3.4L V6 | 13 | 13 |
| Pos | Team | Chassis | Engine | Rd 1 | Rd 2 | Rd 3 | Rd 4 | Rd 5 | Rd 6 | Rd 7 | Rd 8 | Rd 9 | Total |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Corvette Racing | Chevrolet Corvette C5-R | Chevrolet 7.0L V8 | 26 | 20 | 20 | 20 | 20 | 20 | 20 | 26 | 23 | 195 |
| 2 | ACEMCO Motorsports | Saleen S7-R | Ford 7.0L V8 | 19 | 13 | 13 | 13 | 13 | 13 | 16 | 16 | 116 | |
| 3 | Carsport America | Dodge Viper GTS-R | Dodge 8.0L V10 | 10 | 10 | 10 | 10 | 19 | 59 | ||||
| 4 | Krohn-Barbour Racing | Lamborghini Murciélago R-GT | Lamborghini 6.0L V12 | 10 | 16 | 10 | 14 | 50 | |||||
| 5 |  Barron Connor Racing | Ferrari 575-GTC Maranello | Ferrari 6.0L V12 | 22 | 22 |
| Pos | Team | Chassis | Engine | Rd 1 | Rd 2 | Rd 3 | Rd 4 | Rd 5 | Rd 6 | Rd 7 | Rd 8 | Rd 9 | Total |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Alex Job Racing | Porsche 911 GT3-RSR | Porsche 3.6L Flat-6 | 26 | 16 | 13 | 20 | 20 | 20 | 20 | 26 | 23 | 184 |
| 2 | Flying Lizard Motorsports | Porsche 911 GT3-RSR | Porsche 3.6L Flat-6 | 16 | 20 | 16 | 16 | 16 | 13 | 13 | 14 | 16 | 140 |
| 3 | White Lightning Racing | Porsche 911 GT3-RSR | Porsche 3.6L Flat-6 | 19 | 13 | 8 | 1 | 13 | 16 | 16 | 19 | 9 | 114 |
| 4 | The Racer's Group | Porsche 911 GT3-RSR | Porsche 3.6L Flat-6 | 9 | 10 | 6 | 8 | 8 | 8 | 10 | 10 | 11 | 80 |
| 5 | Risi Competizione | Ferrari 360GTC Modena | Ferrari 3.6L V8 | 10 | 20 | 10 | 10 | 16 | 13 | 79 | |||
| 6 | J-3 Racing | Porsche 911 GT3-RSR | Porsche 3.6L Flat-6 | 12 | 10 | 6 | 4 | 4 | 8 | 9 | 5 | 58 | |
| 7 | British American Motorsports (BAM!) | Porsche 911 GT3-RSR | Porsche 3.6L Flat-6 | 14 | 3 | 2 | 4 | 12 | 6 | 41 | |||
| 8 | P.K. Sport | Porsche 911 GT3-RS | Porsche 3.6L Flat-6 | 6 | 3 | 4 | 3 | 1 | 17 | ||||
| 9 | Panoz Motor Sports | Panoz Esperante GT-LM | Ford (Élan) 5.0L V8 | 2 | 3 | 7 | 12 | ||||||
| 10= | Morgan Works Race Team | Morgan Aero 8-R | BMW (Mader) 4.5L V8 | 7 | 7 | ||||||||
| 10= | Cirtek Motorsport | Porsche 911 GT3-RSR Ferrari 360GTC Modena | Porsche 3.6L Flat-6 Ferrari 3.6L V8 | 7 | 7 |
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