| 20.3.2004 | 12 h Sebring | 7 | B2K/40 | Fitzgerald / Gue / Rand | Rand Racing | 26th |
| 20.3.2004 | 12 h Sebring | 8 | B2K/40 | Franchitti | Rand Racing | 42nd |
| 20.3.2004 | 12 h Sebring | 10 | B2K/40 | James / Macaluso / Borkowski | American Spirit Racing, Inc. | 23rd |
| 20.3.2004 | 12 h Sebring | 11 | B2K/40 | Workman / Bradley / Sak | American Spirit Racing, Inc. | 34th |
| 20.3.2004 | 12 h Sebring | 15 | B2K/10 B | Wilson / Andrews / Duno | Taurus Racing | 22nd |
| 20.3.2004 | 12 h Sebring | 16 | EX257 | Weaver / Wallace / Leitzinger | Dyson Racing Team, Inc. | 6th |
| 20.3.2004 | 12 h Sebring | 19 | B2K/40 | van der Steur | Van der Steur Racing, Inc. | 44th |
| 20.3.2004 | 12 h Sebring | 20 | EX257 | Dyson / Lammers / de Radigues | Dyson Racing Team, Inc. | 35th |
| 20.3.2004 | 12 h Sebring | 30 | B2K/40 | Field / Binnie / Sutherland | Intersport Racing | 27th |
| 20.3.2004 | 12 h Sebring | 37 | B01/60 | Field / Dayton / Connor | Intersport Racing | 17th |
| 25.4.2004 | Le Mans Test | 4 | B2K/10 B | Leuenberger / Vann | Taurus Sports Racing | 15th |
| 25.4.2004 | Le Mans Test | 10 | B2K/10 B | Andrews / Lockie / Goldsborough | Taurus Sports Racing | 50th |
| 25.4.2004 | Le Mans Test | 27 | B01/60 | Field / Dayton / Connor | Intersport Racing | 14th |
| 25.4.2004 | Le Mans Test | 32 | B2K/40 | Field / Binnie / Sutherland | Intersport Racing | 31st |
| 9.5.2004 | 1000 km Monza | 4 | B2K/10 B | Leuenberger / Müller | Taurus Sports | DNS |
| 9.5.2004 | 1000 km Monza | 10 | B2K/10 B | Andrews / Lockie | Taurus Sports | DNS |
| 9.5.2004 | 1000 km Monza | 27 | B01/60 | Field / Dayton | Intersport Racing | DNA |
| 9.5.2004 | 1000 km Monza | 32 | B2K/40 | Field / Binnie / Field | Intersport Racing | DNF |
| 13.6.2004 | 24 h Le Mans | 4 | B2K/10 B | André / Leuenberger / Vann | Taurus Sports Racing | 20th |
| 13.6.2004 | 24 h Le Mans | 10 | B2K/10 B | Andrews / Lockie / Kumpen | Taurus Sports Racing | DNF |
| 13.6.2004 | 24 h Le Mans | 27 | B01/60 | Field / Dayton / Connor | Intersport Racing | DNF |
| 13.6.2004 | 24 h Le Mans | 32 | B2K/40 | Field / Binnie / Sutherland | Intersport Racing | 25th |
| 13.6.2004 | 24 h Le Mans | | B2K/40 | | Rand Racing | DNA |
| 13.6.2004 | 24 h Le Mans | | B2K/40 | | Rand Racing | DNA |
| 27.6.2004 | 2 h 45 min Mid-Ohio | 10 | B2K/40 | James / Gue | Miracle Motorsports | 17th |
| 27.6.2004 | 2 h 45 min Mid-Ohio | 13 | B2K/40 | Lally / Eversley | Race Car Company | 12th |
| 27.6.2004 | 2 h 45 min Mid-Ohio | 16 | EX257 | Leitzinger | Dyson Racing Team | 24th |
| 27.6.2004 | 2 h 45 min Mid-Ohio | 19 | B2K/40 | van der Steur / van der Steur | van der Steur Racing Inc. | 18th |
| 27.6.2004 | 2 h 45 min Mid-Ohio | 20 | EX257 | Wallace / Dyson | Dyson Racing Team | 2nd |
| 27.6.2004 | 2 h 45 min Mid-Ohio | 30 | B2K/40 | Field / Liddell | Intersport Racing | 5th |
| 27.6.2004 | 2 h 45 min Mid-Ohio | 37 | B01/60 | Field / Dayton | Intersport Racing | 20th |
| 3.7.2004 | 1000 km Nürburgring | 4 | B2K/10 B | Leuenberger / Müller / Vann | Taurus Sports | DNA |
| 3.7.2004 | 1000 km Nürburgring | 27 | B2K/40 | Ingram / Gaw / Pearson | Tracsport | 25th |
| 5.7.2004 | 2 h 45 min Lime Rock | 10 | B2K/40 | James / Gue | Miracle Motorsports | 12th |
| 5.7.2004 | 2 h 45 min Lime Rock | 13 | B2K/40 | Lally / Eversley | Race Car Company | 17th |
| 5.7.2004 | 2 h 45 min Lime Rock | 16 | EX257 | Weaver / Leitzinger | Dyson Racing Team | 2nd |
| 5.7.2004 | 2 h 45 min Lime Rock | 19 | B2K/40 | van der Steur / van der Steur | van der Steur Racing, Inc. | 23rd |
| 5.7.2004 | 2 h 45 min Lime Rock | 20 | EX257 | Dyson / Wallace | Dyson Racing Team | 3rd |
| 5.7.2004 | 2 h 45 min Lime Rock | 30 | B2K/40 | Field / Durand | Intersport Racing | 25th |
| 5.7.2004 | 2 h 45 min Lime Rock | 37 | B01/60 | Dayton | Intersport Racing | 24th |
| 18.7.2004 | 2 h 45 min Sonoma | 10 | B2K/40 | James / Gue | Miracle Motor Sports | 6th |
| 18.7.2004 | 2 h 45 min Sonoma | 16 | EX257 | Leitzinger / Weaver | Dyson Racing Team | 3rd |
| 18.7.2004 | 2 h 45 min Sonoma | 20 | EX257 | Dyson / Wallace | Dyson Racing Team | 2nd |
| 18.7.2004 | 2 h 45 min Sonoma | 30 | B2K/40 | Field / Liddell / Field | Intersport Racing | 5th |
| 18.7.2004 | 2 h 45 min Sonoma | 37 | B01/60 | Field / Dayton | Intersport Racing | DNS |
| 25.7.2004 | 2 h 45 min Portland | 10 | B2K/40 | James / Gue / Macaluso | Miracle Motorsports | 17th |
| 25.7.2004 | 2 h 45 min Portland | 16 | EX257 | Leitzinger / Weaver | Dyson Racing Team | 2nd |
| 25.7.2004 | 2 h 45 min Portland | 20 | EX257 | Dyson / Wallace | Dyson Racing Team | 6th |
| 25.7.2004 | 2 h 45 min Portland | 30 | B2K/40 | Field / Liddell / Field | Intersport Racing | 5th |
| 25.7.2004 | 2 h 45 min Portland | 37 | B01/60 | Jon Field | Intersport Racing | unused |
| 8.8.2004 | 2 h 45 min Mosport | 10 | B2K/40 | James / Gue / Macaluso | Miracle Motorsports | 19th |
| 8.8.2004 | 2 h 45 min Mosport | 16 | EX257 | Weaver / Leitzinger | Dyson Racing Team | 1st |
| 8.8.2004 | 2 h 45 min Mosport | 20 | EX257 | Dyson / Wallace | Dyson Racing Team | 3rd |
| 8.8.2004 | 2 h 45 min Mosport | 30 | B2K/40 | Field / Liddell | Intersport Racing | 6th |
| 8.8.2004 | 2 h 45 min Mosport | 37 | B01/60 | Field | Intersport Racing | 21st |
| 8.8.2004 | Interserie Lausitzring | | B2K/10 | Zajelsnik / Zajelsnik | | DNA |
| 14.8.2004 | 1000 km Silverstone | 10 | B2K/10 B | Andrews / Lockie / Jones | Taurus | DNF |
| 14.8.2004 | 1000 km Silverstone | 27 | B2K/40 | Ingram / Gaw / Pearson | Tracsport | 26th |
| 22.8.2004 | 2 h 45 min Road America | 11 | B2K/40 | Borkowski / Macaluso | Miracle Motorsports | 16th |
| 22.8.2004 | 2 h 45 min Road America | 16 | EX257 | Leitzinger | Dyson Racing Team | 19th |
| 22.8.2004 | 2 h 45 min Road America | 20 | EX257 | Dyson | Dyson Racing Team | 20th |
| 22.8.2004 | 2 h 45 min Road America | 30 | B2K/40 | Field / Liddell | Intersport Racing | DNF |
| 22.8.2004 | 2 h 45 min Road America | 37 | B01/60 | Field / Dayton | Intersport Racing | 2nd |
| 12.9.2004 | 1000 km Spa | 2 | B98/10 | Bob Berridge | Chamberlain Synergy Motorsport | DNA |
| 12.9.2004 | 1000 km Spa | 10 | B2K/10 B | Andrews / Lockie / Jones | Taurus | DNA |
| 12.9.2004 | 1000 km Spa | 27 | B2K/40 | Ingram / Gaw / Pearson | Tracsport | 17th |
| 25.9.2004 | Petit Le Mans | 7 | B2K/40 | Workman / Devlin / Grupp | Marshall Cooke Racing | DNS |
| 25.9.2004 | Petit Le Mans | 13 | B2K/40 | Lally / Pumpelly / Eversley | Marshall Cooke Racing | 18th |
| 25.9.2004 | Petit Le Mans | 16 | EX257 | Weaver / Leitzinger / Wallace | Dyson Racing Team | 9th |
| 25.9.2004 | Petit Le Mans | 19 | B2K/40 | van der Steur / Devlin / van der Steur | van der Steur Racing, Inc. | 31st |
| 25.9.2004 | Petit Le Mans | 20 | EX257 | Lammers / Dyson | Dyson Racing Team | 3rd |
| 25.9.2004 | Petit Le Mans | 30 | B2K/40 | Field / Liddell / Duno | Intersport Racing | 6th |
| 25.9.2004 | Petit Le Mans | 37 | B01/60 | Field / Dayton | Intersport Racing | 30th |
| 25.9.2004 | Petit Le Mans | 56 | B2K/40 | McMurry / Willman / Bucknum | Miracle Motorsports | 25th |
| 16.10.2004 | 4 h Laguna Seca | 16 | EX257 | Leitzinger / Weaver | Dyson Racing Team | 3rd |
| 16.10.2004 | 4 h Laguna Seca | 19 | B2K/40 | van der Steur / van der Steur / Devlin | van der Steur Racing, Inc. | DNS |
| 16.10.2004 | 4 h Laguna Seca | 20 | EX257 | Dyson / Wallace | Dyson Racing Team | 24th |
| 16.10.2004 | 4 h Laguna Seca | 30 | B2K/40 | Field / Sutherland / Liddell | Intersport Racing | 7th |
| 16.10.2004 | 4 h Laguna Seca | 37 | B01/60 | Field / Dayton | Intersport Racing | 22nd |
| 16.10.2004 | 4 h Laguna Seca | 56 | B2K/40 | Bucknum / Willman / McMurry | Miracle Motorsports | 19th |