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Running Calendar near Estes Park 2026-2027

Monthly updates for Estes Park

Get new running races (and updates) in your inbox every month.

Explore the top running races near Estes Park for 2026-2027! We've gathered 44 exciting races in the area. Check out our detailed list below to find your next local race.

Half Marathons Marathons Trail Runs Triathlons
January 2026
Jan
24
Sa

Polar Bear Run and Plunge

5 km
Jan
31
Sa

Sourdough Snowshoe Race

Trail Run 18 km 30 km
February 2026
Feb
14
Sa

Sweetheart Classic

4 mi
Feb
22
Su

Bacon Strip Race

4 mi 10 mi
March 2026
Mar
14
Sa

Sharin' O' The Green

5 km
Mar
28
Sa

Cryogenic Cannibal Chase

8 km
April 2026
Apr
10-11
Fr - Sa

Run The Ranch

Trail Run 5 km 10 km ... 6 hr 12 hr
Apr
11
Sa

Boulder Rez Half

3 mi 6 mi 13 mi
Apr
11-12
Sa - Su

NoCo Urban Ultra

Trail Run 50 mi 100 mi
Apr
19
Su

Horsetooth Half Marathon

Half Marathon
Apr
25
Sa

Bigfoot Half Marathon

5 km Half Marathon
May 2026
May
3
Su

Colorado Marathon

5 km 10 km Half Marathon Marathon
May
3
Su

Longmont Half

5 km 13 mi
May
9
Sa

Quad Rock 50

Trail Run 25 mi 50 mi
May
23
Sa

Samson's Revenge

Trail Run 10 km 27 km 55 km
June 2026
Jun
6
Sa

StepUp For Women And Recovery

5 km
Jun
7
Su

Crazy Legs Trail Run

Trail Run 10 km
Jun
13
Sa

Ironman 70.3 Boulder

Triathlon
Jun
20
Sa

Estes Park Marathon

5 mi Half Marathon Marathon
Jun
27
Sa

Timberview Trail Run

Trail Run 5 km 5 mi 10 mi