Unadilla Motocross
July 31 1977
500MX Results
| Rider | Hometown | Motos | ||
|---|---|---|---|---|
| 1 |  Marty Smith | San Diego, CA  | 2 - 1 |  |
| 2 | Tommy Croft | San Diego, CA | 4 - 2 | |
| 3 | Rex Staten | Fontana, CA | 3 - 5 | Harley-Davidson |
| 4 | Tony DiStefano | Bristol, PA | 7 - 3 |  |
| 5 | Danny Laporte | Yucca Valley, CA | 8 - 4 | |
| 6 |  Kent Howerton | San Antonio, TX | 6 - 8 |  |
| 7 |  Bob Hannah | Whittier, CA | 1 |  |
| 8 | Rick Burgett | Sandy, OR | 5 - 15 | |
| 9 | Gary Semics | Lisbon, OH | 14 - 7 |  |
| 10 | Frank Stacy | Cheektowaga, NY | 12 - 10 | Penton |
| 11 | Rich Eierstedt | Norwalk, CA | 10 - 12 | Bultaco |
| 12 | Mickey Kessler | Farmingdale, NJ | 11 - 13 | Montesa |
| 13 | Steve Stackable | Austin, TX | - 6 | Maico |
| 14 | Gaylon Mosier | Garden Grove, CA | - 9 | Maico |
| 15 |  Jim Pomeroy | Yakima, WA | 13 - 17 | |
| 16 | Jimmy Ellis | Cobalt, CT | 9 | Can-am |
| 17 | Pat Moroney | Newburgh, NY | - 11 | |
| 18 | Denny Swartz | Reno, OH | 15 - 19 | Maico |
| 19 | Furman Gray | Warrior, AL | - 14 | Maico |
| 20 | Parry Klassen | Reedley, CA | 20 - 16 | |
| 21 | Roger Brown | New Braunfels, TX | 16 | Penton |
| 22 | Chuck Sun | Sherwood, OR | 18 - 20 | |
| 23 | Koji Masuda | Japan  | 17 | |
| 24 | Jim Turner | Woodside, CA | - 18 | |
| 25 | Wayne Boyer | Poway, CA | 19 | |