Round	Race name	Date	Circuit	Laps	Winner
1	Mobil 1 12 Hours of Sebring	19/03/2005	Sebring	361	Tom Kristensen Champion Racing
2	Sportsbook.com Grand Prix of Atlanta	17/04/2005	Road Atlanta	112	JJ Lehto Champion Racing
3	American Le Mans at Mid-Ohio	22/05/2005	Mid-Ohio	117	Butch Leitzinger Dyson Racing
4	New England Grand Prix	04/07/2005	Lime Rock	165	JJ Lehto Champion Racing
5	Infineon Grand Prix of Sonoma	17/07/2005	Sears Point	111	Frank Biela Champion Racing
6	American Le Mans Portland Grand Prix	30/07/2005	Portland	137	Frank Biela Champion Racing
7	American Le Mans Generac 500	21/08/2005	Elkhart Lake	72	Frank Biela Champion Racing
8	Labor Day Weekend Grand Prix of Mosport	04/09/2005	Mosport Park	127	Butch Leitzinger Dyson Racing
9	Petit Le Mans	01/10/2005	Road Atlanta	394	Frank Biela Champion Racing
10	Monterey Sports Car Championships	16/10/2005	Laguna Seca	164	Tom Chilton Zytek Engineering

3,128

Championships

12,833

Results

15,933

Drivers

8,248

Teams

856

Circuits