| 11 | Highland Hills | 250MX 450 Class | August 25, 1974 | Maico |
| 13 | Moto-Masters Park | 250MX 450 Class | August 18, 1974 | Maico |
| 17 | Delta Motorsport Park | 250MX 450 Class | August 11, 1974 | Maico |
| 11 | RedBud Track 'n Trail | 250MX 450 Class | April 28, 1974 | Maico |
| 20 | Lake Whitney Cycle Ranch | 250MX 450 Class | June 17, 1973 | CZ |
| 10 | Cycle Trails Moto Park | 250MX 450 Class | June 10, 1973 | CZ |
| 20 | Opelousas, LA | 250MX 450 Class | May 6, 1973 | CZ |
| 14 | Moto-sports Racing Circus Ltd | 250MX 450 Class | July 23, 1972 | Husqvarna |
| 16 | Los Angeles Memorial Coliseum | 250MX 450 Class | July 8, 1972 | Husqvarna |
| 13 | Straddle Line Park | 250MX 450 Class | July 2, 1972 | Husqvarna |
| 15 | Owyhee M/C Clubgrounds | 250MX 450 Class | June 25, 1972 | Husqvarna |
| 4 | Carlsbad Raceway | 250MX 450 Class | May 28, 1972 | CZ |
| 7 | Saddleback Park | 250MX 450 Class | May 21, 1972 | CZ |
| 4 | Cal-Expo | 250MX 450 Class | May 14, 1972 | CZ |
