Sonoma, CA
Sears Point International Raceway
- June 29, 1980
- June 17, 1979
- June 11, 1978
All-Time Wins
450 Class
| Rider | Hometown | Wins |
|---|---|---|
 Bob Hannah |  Whittier, CA | 1 |
| Tommy Croft | San Diego, CA | 1 |
| Marty Tripes | Santee, CA | 1 |
| Gaylon Mosier | Garden Grove, CA | 1 |
| Chuck Sun | Sherwood, OR | 1 |
250 Class
| Rider | Hometown | Wins |
|---|---|---|
 Broc Glover | El Cajon, CA | 1 |