Race Calendar in Colorado, United States

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

Denver, Colorado, United States

Sep 5, 2026 (Sat)

$22.00 - $67.00

Running

5K 10K Half-Marathon 1.6K

Cirque Series - Arapahoe Basin, CO

Keystone, Colorado, United States

Sep 5, 2026 (Sat)

$90.15

Trail running

15.1K

Raising the Barr

Brighton, Colorado, United States

Sep 5, 2026 (Sat)

Recovery Run of the Rockies 5K

Fort Collins, Colorado, United States

Sep 5, 2026 (Sat)

$30.00

Running

5K

Break Your Neck: Walk, Run, or Roll

Pueblo, Colorado, United States

Sep 5, 2026 (Sat)

Free

Running

5K 10K

Demon Dash

Arvada, Colorado, United States

Sep 5, 2026 (Sat)

$25.00

Running

5K

South Fork Alder Ass Race

South Fork, Colorado, United States

Sep 5, 2026 (Sat)

$65.00

Adventure race

17.7K 4.8K

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

Colorado Springs, Colorado, United States

Sep 6, 2026 (Sun)

$22.00 - $54.00

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

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

Fca All-Abilities Labor Day 5K

Loveland, Colorado, United States

Sep 7, 2026 (Mon)

$65.00

Running

5K