1972 Lucas Oil AMA Pro Motocross Championship
Rio Bravo MX Park - 500MX Results
Rio Bravo MX Park
Houston, TX US 
October 29, 1972
500MX Results
| Rider | Hometown | Bike | |
|---|---|---|---|
| 1 |  Brad Lackey | Lafayette, CA  | Kawasaki |
| 2 | Mark Blackwell | Mission Viejo, CA | Husqvarna |
| 3 | Gary Jones | Hacienda Heights, CA | Yamaha |
| 4 | Bryan Kenney | Cleveland, OH | Maico |
| 5 | Jim Pomeroy | Yakima, WA | Bultaco |
| 6 | Jim Weinert | Middletown, NY | Yamaha |
| 7 | Jim Cooke | Placentia, CA | Kawasaki |
| 8 | Herbert Lee Miller | Canal Fulton, OH | Maico |
| 9 | Tony Wynn | Sherwood, AR | CZ |
| 10 | Bryar Holcomb | Sunland, CA | Suzuki |
| 11 | Rich Thorwaldson | Cerritos, CA | Suzuki |
| 12 | Mike Runyard | West Covina, CA | CZ |
