| 15 | Broome-Tioga Sports Center | 500MX 500MX | 14 - 15 | August 24, 1980 | Yamaha |
| 11 | Washougal Motocross | 500MX 500MX | 15 - 9 | July 6, 1980 | Yamaha |
| 13 | Lakewood Sports Cycle Park | 500MX 500MX | 9 | June 15, 1980 | Yamaha |
| 8 | Atlanta International Raceway | 500MX 500MX | 5 - 13 | June 8, 1980 | Yamaha |
| 15 | RedBud Track 'n Trail | 500MX 500MX | - 10 | June 1, 1980 | Yamaha |
| 18 | High Point Raceway | 500MX 500MX | 15 | May 25, 1980 | Yamaha |
| 8 | Metrolina Speedway Park | 500MX 500MX | 9 - 9 | August 19, 1979 | Yamaha |
| 14 | Broome-Tioga Sports Center | 500MX 500MX | 12 - 15 | August 12, 1979 | Yamaha |
| 15 | Rio Bravo MX Park | 500MX 500MX | 12 - 16 | August 5, 1979 | Yamaha |
| 19 | High Point Raceway | 500MX 500MX | 14 | July 8, 1979 | Yamaha |
| 17 | RedBud Track 'n Trail | 500MX 500MX | 16 - 15 | July 1, 1979 | Yamaha |
| 21 | Lakewood Sports Cycle Park | 500MX 500MX | - 18 | June 24, 1979 | Yamaha |
| 16 | Sears Point International Raceway | 500MX 500MX | - 11 | June 17, 1979 | Yamaha |
