| 9 | High Point Raceway | 250MX 450 Class | July 8, 1979 | Yamaha |
| 22 | RedBud Track 'n Trail | 250MX 450 Class | July 1, 1979 | Yamaha |
| 18 | Lakewood Sports Cycle Park | 250MX 450 Class | June 24, 1979 | Yamaha |
| 15 | Sears Point International Raceway | 250MX 450 Class | June 17, 1979 | Yamaha |
| 19 | Atlanta International Raceway | 250MX 450 Class | May 27, 1979 | Yamaha |
| 15 | Moto-X 338 | 250MX 450 Class | May 20, 1979 | Yamaha |
| 11 | Canyon Raceway | 250MX 450 Class | April 8, 1979 | Yamaha |
| 20 | Racing World | 250MX 450 Class | April 1, 1979 | Yamaha |
| 9 | Hangtown Motocross Classic | 250MX 450 Class | March 25, 1979 | Yamaha |
| 15 | Racing World | 250MX 450 Class | April 16, 1978 | Honda |
| 15 | Hangtown Motocross Classic | 250MX 450 Class | April 9, 1978 | Honda |
| 3 | Delta Motorsport Park | 250MX 450 Class | August 11, 1974 | Bultaco |
| 17 | Gran-Am Motocross Park | 250MX 450 Class | May 19, 1974 | Bultaco |
| 3 | RedBud Track 'n Trail | 250MX 450 Class | April 28, 1974 | Bultaco |
| 6 | Hangtown Motocross Classic | 250MX 450 Class | April 8, 1974 | Bultaco |
