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Country
United States
Location
Sonoma, California
Type
Permanent road course
Length
2.523 (Miles)
Record
Marco Werner (Audi R8), 1m22.041, 110.711 mph, ALMS Sports Cars, 2005
First Race
3,223
Championships
18,316
Results
17,614
Drivers
10,796
Teams
876
Circuits
