1973 AMA Pro Motocross Championship Rio Bravo MX Park: 500MX Results
November 4, 1973
500MX Results
| Rider | Hometown | Bike | |
|---|---|---|---|
| 1 |  Jim Weinert | Middletown, NY  | Kawasaki |
| 2 |  Gary Jones | Hacienda Heights, CA | Maico |
| 3 |  Rich Thorwaldson | Cerritos, CA | Suzuki |
| 4 | Gary Semics | Lisbon, OH | Husqvarna |
| 5 | Kent Howerton | San Antonio, TX | CZ |
| 6 | Mike Hartwig | Hadley, MI | Husqvarna |
| 7 | Marty Tripes | Santee, CA | Honda |
| 8 | Tim Hart | Torrance, CA | Yamaha |
| 9 | Peter Lamppu | Los Angeles, CA | Kawasaki |
| 10 | Gary Chaplin | Cayucos, CA | Honda |
| 11 |  Brad Lackey | Lafayette, CA | Kawasaki |
| 12 | Mark Blackwell | Mission Viejo, CA | Husqvarna |
| 13 | Mike Runyard | West Covina, CA | Suzuki |
| 14 | Jim West | Pasadena, CA | Husqvarna |
| 15 | Pierre Karsmakers | The Netherlands  | Yamaha |
| 16 | Robert Harris | Windsor, NY | Bultaco |
| 17 | Jim Cooke | Huntington Beach, CA | Kawasaki |
| 18 | John DeSoto | Honolulu, HI | CZ |
| 19 | Jack O'Leary | Austin, TX | Yamaha |
| 20 | Sonny DeFeo | Port Washington, NY | Maico |
