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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
18,309
Results
17,594
Drivers
10,768
Teams
876
Circuits
