Race Calendar in Colorado, United States

The Long View Marathon

Fort Collins, Colorado, United States

10 Oct, 2026 (Sat)

$35.00 - $100.00

Running

Marathon Half-Marathon 5K

Suffer Better 10th Annual Fall Trail Runs

Pine, Colorado, United States

10 Oct, 2026 (Sat)

$25.00 - $90.00

Trail running

Ultra 25K 5K

Dialysis Dash 5K

Grand Junction, Colorado, United States

10 Oct, 2026 (Sat)

$20.00

Running

5K

Breckenridge RunFest

Breckenridge, Colorado, United States

10 Oct, 2026 (Sat) – 11 Oct, 2026

$25.00 - $110.00

Running

10K 5K 1.6K Marathon +1

Manitou 5K

Manitou Springs, Colorado, United States

10 Oct, 2026 (Sat)

$25.00 - $40.00

Running

5K

Westy Half & 5k

Westminster, Colorado, United States

11 Oct, 2026 (Sun)

$40.00 - $65.00

Running

Half-Marathon 5K

Durango Marathon

Durango, Colorado, United States

11 Oct, 2026 (Sun)

$30.00 - $140.00

Running

Marathon Half-Marathon 5K

Blue Sky Trail Marathon & Half Marathon

Fort Collins, Colorado, United States

17 Oct, 2026 (Sat) – 18 Oct, 2026

$100.00 - $120.00

Trail running

43K 22.2K

The Great Trailhead Foot Race 5 & 10 Miler

Lakewood, Colorado, United States

17 Oct, 2026 (Sat)

$65.00 - $70.00

Running

8K 16.1K

Indian Creek Trail Runs

Sedalia, Colorado, United States

17 Oct, 2026 (Sat)

$50.00 - $160.00

Trail running

8.9K 24.1K Ultra

Living Water 5K Fun Run

Denver, Colorado, United States

17 Oct, 2026 (Sat)

$30.00

Running

5.1K

Witch Paddle

Littleton, Colorado, United States

17 Oct, 2026 (Sat)