Race Calendar in Colorado, United States

Rumble at the Ranch - 6 Hour MTB Relay

Highlands Ranch, Colorado, United States

23 Aug, 2026 (Sun)

Pioneer Prairie Dog Half, 10k & 5k

Westminster, Colorado, United States

23 Aug, 2026 (Sun)

$40.00 - $80.00

Running

Half-Marathon 10K 5K

Eltuck Valley 12K - Lory Summer Trail Series

Bellvue, Colorado, United States

25 Aug, 2026 (Tue)

$25.00

Trail running

12K

Aug 27 - All groups @ Red Rocks (different meeting point for Adv) - 5:30 pm start!

Colorado Springs, Colorado, United States

27 Aug, 2026 (Thu)

Unbridled Golf Classic

Castle Rock, Colorado, United States

27 Aug, 2026 (Thu)

Rocky Mountain 5K presented by School District 11

Colorado Springs, Colorado, United States

29 Aug, 2026 (Sat)

Free - $35.00

Running

5K 1K

Run Like the Wind 5k / 2k / Dog Jog

Allenspark, Colorado, United States

29 Aug, 2026 (Sat)

$20.00 - $35.00

Running

5K 2K

RexRun For PAWSitivity 2026 Trail Run/Walk

Aurora, Colorado, United States

29 Aug, 2026 (Sat)

$20.00 - $45.00

Running, Walking

5K 1.6K

Run to Breast Cancer 5K/10K/13.1 DENVER/AURORA

Centennial, Colorado, United States

29 Aug, 2026 (Sat)

$30.00 - $45.00

Running

5K 10K Half-Marathon 1.6K +2

Continental Divide Trail Run

Steamboat Springs, Colorado, United States

29 Aug, 2026 (Sat)

Trail running

8K 25.7K Ultra

Run for Hope - Colorado Springs

Colorado Springs, Colorado, United States

29 Aug, 2026 (Sat)

$25.00 - $40.00

Running

5K 1.6K

Glow & Roll: Illuminate What's Possible

Littleton, Colorado, United States

29 Aug, 2026 (Sat)

$55.00

Running

5K 2.6K