St. Peters, MO
Cycle World USA
- June 18, 1978
- July 23, 1977
- July 18, 1976
All-Time Wins
450 Class
| Rider | Hometown | Wins |
|---|---|---|
| Pierre Karsmakers |  The Netherlands | 1 |
 Marty Smith |  San Diego, CA | 1 |
 Bob Hannah | Whittier, CA | 1 |
| Mike Bell | Lakewood, CA | 1 |
250 Class
| Rider | Hometown | Wins |
|---|