Grand Prix of Sonoma

The Grand Prix of Sonoma was a sports car race held at Sonoma Raceway (formerly Sears Point Raceway and Infineon Raceway) in Sonoma, California. It began in 1976 as an IMSA GT Championship race, before joining the American Le Mans Series from 1999 to 2005. It was a Grand-Am Rolex Sports Car Series race from 2006 to 2008.

Winners
* Daytona Prototypes only.