Running Race Calendar in Colorado, United States

James Test Site

Lyons, Colorado, United States

Aug 30, 2026 (Sun)

Running

5K 10K

Break Your Neck: Walk, Run, or Roll

Pueblo, Colorado, United States

Sep 5, 2026 (Sat)

Free

Running

5K 10K

Recovery Run of the Rockies 5K

Fort Collins, Colorado, United States

Sep 5, 2026 (Sat)

$30.00

Running

5K

Demon Dash

Arvada, Colorado, United States

Sep 5, 2026 (Sat)

$25.00

Running

5K

The Beaver Run

Breckenridge, Colorado, United States

Sep 5, 2026 (Sat)

Free - $50.00

Running

5K 10K 15K 0.2K

Golden Harvest Half Marathon & 5k/10k - Denver

Denver, Colorado, United States

Sep 5, 2026 (Sat)

$22.00 - $73.00

Running

5K 10K Half-Marathon 1.6K

Golden Harvest Half Marathon & 5k/10k - Colorado Springs

Colorado Springs, Colorado, United States

Sep 6, 2026 (Sun)

$22.00 - $60.00

Running

1.6K 5K 10K Half-Marathon

10k at 10,000 Feet

Steamboat Springs, Colorado, United States

Sep 6, 2026 (Sun)

$25.00 - $40.00

Running

12.9K 6.4K

Fca All Abilities Labor Day 5K

Loveland, Colorado, United States

Sep 7, 2026 (Mon)

$65.00

Running

5K

Labor Day Half Marathon

Parker, Colorado, United States

Sep 7, 2026 (Mon)

$33.00 - $75.00

Running

Half-Marathon 10K 5K

Oak Creek No Fun Run

Oak Creek, Colorado, United States

Sep 7, 2026 (Mon)

$25.00

Running

5K

Fca All-Abilities Labor Day 5K

Loveland, Colorado, United States

Sep 7, 2026 (Mon)

$65.00

Running

5K