500MX Results
| Rider | Hometown | Machine |
|---|
| 1 | Pierre Karsmakers | Netherlands | Yamaha |
| 2 | Rich Thorwaldson | Cerritos, CA | Suzuki |
| 3 | Brad Lackey | Lafayette, CA | Kawasaki |
| 4 | Steve Stackable | Austin, TX | CZ |
| 5 | Gary Chaplin | Cayucos, CA | Honda |
| 6 | Mike Runyard | West Covina, CA | Suzuki |
| 7 | Tim Hart | Torrance, CA | Yamaha |
| 8 | Gary Semics | Lisbon, OH | Husqvarna |
| 9 | Gary Jones | Hacienda Heights, CA | Maico |
| 10 | Jim West | Pasadena, CA | Husqvarna |
| 11 | Peter Lamppu | Los Angeles, CA | Kawasaki |
| 12 | James Cooke | Huntington Beach, CA | Kawasaki |
| 13 | Mike Hartwig | Hadley, MI | Husqvarna |
| 14 | Tony DiStefano | Bristol, PA | CZ |
| 15 | Rick Burgett | Sandy, OR | Yamaha |
| 16 | Sonny DeFeo | Port Washington, NY | Maico |
| 17 | Robert Harris | Windsor, NY | Bultaco |
| 18 | Mark Blackwell | Mission Viejo, CA | Husqvarna |
| 19 | Rex Staten | Fontana, CA | Maico |
| 20 | John DeSoto | Honolulu, HI | CZ |