1978 AMA Pro Motocross Championship Cycle World USA: 500MX Results
June 18, 1978
500MX Results
| Rider | Hometown | Motos | Bike | |
|---|---|---|---|---|
| 1 |  Mike Bell | Lakewood, CA  | 1 - 1 | Yamaha |
| 2 | Tommy Croft | San Diego, CA | 2 - 4 | Honda |
| 3 | Darrell Shultz | Orangevale, CA | 4 - 3 | Suzuki |
| 4 |  Marty Smith | San Diego, CA | 6 - 2 | Honda |
| 5 | Rex Staten | Fontana, CA | 3 - 7 | Yamaha |
| 6 | Gary Semics | Lisbon, OH | 11 - 5 | Can-am |
| 7 | Denny Swartz | Reno, OH | 10 - 8 | Maico |
| 8 | Tony Summey | Forest City, NC | 9 - 9 | Yamaha |
| 9 | Danny Laporte | Yucca Valley, CA | 8 - 10 | Suzuki |
| 10 | Rick Burgett | Sandy, OR | 14 - 6 | Yamaha |
| 11 | Frank Stacy | Cheektowaga, NY | 12 - 11 | KTM |
| 12 | Tony DiStefano | Bristol, PA | 5 | Suzuki |
| 13 | Jim Turner | Woodside, CA | 13 - 14 | Husqvarna |
| 14 | Mickey Kessler | Farmingdale, NJ | 7 | Yamaha |
| 15 | Steve Stackable | Austin, TX | 16 - 13 | Kawasaki |
| 16 | Robert Shoup | Tipp City, OH | 17 - 15 | Suzuki |
| 17 | Pat Moroney | Newburgh, NY | - 12 | Suzuki |
| 18 | Ross Williams | Medina, OH | 15 - 18 | Maico |
| 19 | Martin Murphy | Painesville, OH | 20 - 16 | |
| 20 | Martin Potoczny | Aliquippa, PA | - 17 | |
| 21 | Ray Ritchie | Buchanan, MI | 19 - 19 | |
| 22 | Boo Stichter | Thornton, CO | 18 | |
| 23 | Terrence Martz | East Stroudsburg, PA | - 20 |
