Результаты первого заезда четвертого этапа Чемпионата Америки по Мотокроссу 2010 года в классе 450
|       Поз     |           №     |           Гонщик     |           Нац     |           Мотоцикл     |      Интервал     |       Кол. очков     | 
| 1 | 29 | Short, Andrew |  | Honda | 17 кругов | 25
 | 
| 2 | 800 | Alessi, Mike |  | KTM | +5.310 | 22
 | 
| 3 | 5 | Dungey, Ryan |  | Suzuki | +6.189 | 20
 | 
| 4 | 1 | Reed, Chad |  | Kawasaki | +10.097 | 18
 | 
| 5 | 33 | Grant, Josh |  | Yamaha | +15.640 | 16
 | 
| 6 | 24 | Metcalfe, Brett |  | Honda | +20.934 | 15
 | 
| 7 | 46 | Sipes, Ryan |  | Yamaha | +57.230 | 14
 | 
| 8 | 55 | Chisholm, Kyle |  | Yamaha | +1:04.036 | 13
 | 
| 9 | 32 | Cunningham, Kyle |  | Kawasaki | +1:07.261 | 12
 | 
| 10 | 23 | Brayton, Justin |  | Yamaha | +1:09.158 | 11
 | 
| 11 | 41 | Regal, Kyle |  | Honda | +1:20.933 | 10
 | 
| 12 | 27 | Wey, Nicholas |  | Kawasaki | +1:21.940 | 9
 | 
| 13 | 712 | Moss, Matt |  | Suzuki | +1:34.769 | 8
 | 
| 14 | 101 | Townley, Ben |  | Honda | +1:39.582 | 7
 | 
| 15 | 42 | Evans, Benjamin |  | Suzuki | +1:40.682 | 6
 | 
| 16 | 134 | Sewell, Travis |  | Yamaha | +1:47.464 | 5
 | 
| 17 | 58 | Peick, Weston |  | Yamaha | +1:51.990 | 4
 | 
| 18 | 196 | Wharton, Tyler |  | Honda | +1:54.280 | 3
 | 
| 19 | 43 | Clarke, Steven |  | Suzuki | +1:55.111 | 2
 | 
| 20 | 251 | Clark, Joshua |  | Kawasaki | +2:27.039 | 1
 | 
| 21 | 79 | Sipes, Justin |  | Kawasaki | 16 кругов | 0
 | 
| 22 | 88 | Renner, Ricky |  | KTM | +12.687 | 0
 | 
| 23 | 771 | O'Dell, Terren |  | Yamaha | +21.736 | 0
 | 
| 24 | 167 | Mills, Ryan |  | KTM | +42.088 | 0
 | 
| 25 | 687 | Toth, Garret |  | Honda | +43.656 | 0
 | 
| 26 | 261 | Morrison, Jacob |  | Honda | +44.967 | 0
 | 
| 27 | 241 | Anderson, Derek |  | Kawasaki | +57.168 | 0
 | 
| 28 | 209 | Harrison, Heath |  | Kawasaki | +1:10.013 | 0
 | 
| 29 | 774 | Marshall, Robert |  | Kawasaki | +1:40.838 | 0
 | 
| 30 | 606 | Stewart, Ronnie |  | Suzuki | +1:48.019 | 0
 | 
| 31 | 587 | Kendall, Dustin |  | Yamaha | +1:57.652 | 0
 | 
| 32 | 418 | Hayes, Nicholas |  | Kawasaki | 15 кругов | 0
 | 
| 33 | 597 | Dougherty, Mitchell |  | Honda | +23.945 | 0
 | 
| 34 | 388 | Wallace, Bryan |  | KTM | +26.560 | 0
 | 
| 35 | 57 | Browne, Jarred |  | Kawasaki | 12 кругов | 0
 | 
| 36 | 18 | Millsaps, David |  | Honda | 9 кругов | 0
 | 
| 37 | 122 | Reardon, Daniel |  | Yamaha | 6 кругов | 0
 | 
| 38 | 10 | Hahn, Thomas |  | Suzuki | 4 круга | 0
 | 
| 39 | 35 | Goerke, Matthew |  | Yamaha | 2 круга | 0
 | 
| 40 | 8 | Langston, Grant |  | Yamaha | 1 круг | 0
 |