Thunderhill Raceway Park

Thunderhill Raceway Park is a motorsports complex located 7 miles West of Willows, California, United States, in the Sacramento Valley. It is the venue for the longest automobile race in the United States, the 25 Hours of Thunderhill, held annually during the first weekend in December.

Thunderhill Raceway Park

Location	Glenn County, west of Willows, California, United States
Coordinates	39°32′25.2″N 122°19′50.5″W
Address	5250 Highway 162
Major events	National Auto Sport Association

Thunderhill has two tracks: the original 3 mile track known as Thunderhill East, and a new 2 mile track known as Thunderhill West. The two tracks can also be combined to offer a 5-mile track, the longest road course in America. Thunderhill also offers a large skid pad area as well for drifting and car control events.

The venue is available for a wide variety of events or functions. It can be rented for racing events, lapping day events, drifting events, go kart events, driving schools, ride and drive programs, corporate events, commercials, a movie location, trade shows, weddings, receptions, swap meets etc.

San Francisco Region Properties, Inc., dba Thunderhill Park is the wholly owned subsidiary of the San Francisco Region Sports Car Club of America. Thunderhill Raceway has its own board of directors and is operated completely independently of the non-profit subsidiary.