Colorado Runner

USATF Colorado Announces 2026 Grand Prix Series Featuring Six-Race Lineup and $10,000…

Apr 20, 2026 121

Apr 17, 2026 243

Apr 16, 2026 40

For a full list of race results, click here.

Greenland Trail Races

50K, 25K, 8M and 4M
May 2, 2026
Greenland Open Space | Larkspur, CO
2026 RRCA National 50K Championship

Flamingo Day 5K

5K
June 7, 2026
Sloan’s Lake Park | Denver, CO

Cookie Chase

5K
July 11, 2026
Sloan’s Lake Park | Denver, CO

Labor Day Half Marathon

Half Marathon, 10K and 5K
September 7, 2026
Salisbury Park | Parker, CO

Ghosts & Goblins 5K

5K and 10K
October 25, 2026
City Park | Denver, CO

Pumpkin Pie 5K

5K and 10K
November 21, 2026
City Park | Denver, CO

Ugly Sweater 5K

5K
December 20, 2026
Washington Park | Denver, CO

Donut Dash

5K
April 4, 2027
Washington Park | Denver, CO