| 15 | Lakewood Sports Cycle Park | 500MX 500MX | 16 - 15 | June 15, 1980 | Yamaha |
| 11 | Sunshine Speedway | 500MX 500MX | 10 - 14 | August 26, 1979 | Maico |
| 18 | Metrolina Speedway Park | 500MX 500MX | - 15 | August 19, 1979 | Maico |
| 17 | Broome-Tioga Sports Center | 500MX 500MX | 15 - 16 | August 12, 1979 | Maico |
| 9 | Rio Bravo MX Park | 500MX 500MX | 11 - 11 | August 5, 1979 | Maico |
| 12 | RedBud Track 'n Trail | 500MX 500MX | 15 - 11 | July 1, 1979 | Maico |
| 20 | Lakewood Sports Cycle Park | 500MX 500MX | - 16 | June 24, 1979 | Maico |
| 18 | Sears Point International Raceway | 500MX 500MX | - 12 | June 17, 1979 | Maico |
| 20 | Atlanta International Raceway | 500MX 500MX | 16 | May 27, 1979 | Maico |
| 18 | Moto-X 338 | 500MX 500MX | 12 | May 20, 1979 | Maico |
| 11 | High Point Raceway | 250MX 450 Class | | July 9, 1978 | Honda |
| 10 | Cycle World USA | 250MX 450 Class | | June 18, 1978 | Honda |
| 13 | Sears Point International Raceway | 250MX 450 Class | | June 11, 1978 | Honda |
| 9 | Lake Whitney Cycle Ranch | 250MX 450 Class | | May 28, 1978 | Honda |
| 16 | Moto-X 338 | 250MX 450 Class | | May 7, 1978 | Honda |
| 15 | Rio Bravo MX Park | 250MX 450 Class | | April 23, 1978 | Honda |
| 21 | Sunshine Speedway | 500MX 500MX | 17 - 18 | August 28, 1977 | Penton |
| 14 | Lake Whitney Cycle Ranch | 500MX 500MX | 17 - 14 | July 17, 1977 | Penton |
