Lakewood, CO
Thunder Valley Motocross Park
- June 13, 2026
- June 7, 2025
- June 8, 2024
- June 10, 2023
- June 11, 2022
- June 5, 2021
- October 3, 2020
- June 1, 2019
- June 2, 2018
- June 3, 2017
- June 4, 2016
- May 30, 2015
- June 7, 2014
- May 25, 2013
- June 2, 2012
- June 25, 2011
- June 26, 2010
- June 27, 2009
- June 29, 2008
- July 22, 2007
- July 23, 2006
- July 24, 2005
All-Time Wins
450 Class
| Rider | Hometown | Wins |
|---|---|---|
 Ken Roczen |  Mattstedt, Germany | 5 |
 Ryan Dungey |  Belle Plaine, MN | 4 |
 Jett Lawrence |  Landsborough, Australia | 3 |
 Ricky Carmichael | Havana, FL | 2 |
 James Stewart | Haines City, FL | 2 |
250 Class
| Rider | Hometown | Wins |
|---|---|---|
 Justin Cooper | Cold Spring Harbor, NY | 2 |
 Blake Baggett | Grand Terrace, CA | 2 |
 Jeremy Martin | Millville, MN | 2 |
 Joey Savatgy | Thomasville, GA | 2 |
 Ryan Villopoto | Poulsbo, WA | 2 |