Race Calendar in Colorado, United States

May

17

Colfax Marathon

Lone Tree, Colorado, United States

Running

Marathon

May

17

Canine On the Creek

Dumont, Colorado, United States

Running

5K 1.6K

May

17

Girls on the Run Rockies Colfax SoleMates 2026

Denver, Colorado, United States

Running

Marathon Half-Marathon

May

16

Gluten Free Gallop 5K

Littleton, Colorado, United States

Running

5K 2.5K

May

16

May 16 - Never Ever MTBers & Beginners @ Bluestem - (bring a non-WMBA friend!!)

Colorado Springs, Colorado, United States

Cycling

Never Ever MTBers Beginner (2 groups)

May

16

Spirit Challenge Run for Autism 10k and 5k

Steamboat Springs, Colorado, United States

Running

10K 5K

May

16

Growing Home - Colfax Fundraiser

Denver, Colorado, United States

Running

5K

May

16

Girls on the Run 5K at Colfax - Running Buddies and Volunteers

Denver, Colorado, United States

Running

5K

May

16

Black Canyon Ascent

Montrose, Colorado, United States

Running Walking

9.7K

May

16

The HIKE

Cascade, Colorado, United States

Running

Walk, Run, or Hike Against Trauma

May

15

Know. Grow. GO RUN. 5K

Loveland, Colorado, United States

Running

5K

May

12

Spring Dirt Pile Short Track Race Series

Fort Collins, Colorado, United States

Mountain biking

1.6K +1