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Trail Running Calendar near Castle Rock 2025-2026

Monthly updates for Castle Rock

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

Explore the top trail runs near Castle Rock for 2025-2026! We've gathered 14 exciting races in the area. Check out our detailed list below to find your next local race.

January 2026
Jan
25
Su

Freakin Freezin 5K - Denver

Trail Run 5 km
February 2026
Feb
8
Su

Super Sunday 5K

Trail Run 5 km
April 2026
Apr
11
Sa

Mountain Ridge Trail Race

Trail Run 3 mi 6 mi 13 mi 22 mi
May 2026
May
2
Sa

Greenland Trail Races

Trail Run 4 mi 8 mi 25 km 50 km
May
2
Sa

Niwot's Challenge

Trail Run 24 mi 50 mi 100 mi
May
30
Sa

North Fork 50 Mile

Trail Run 50 km 50 mi
August 2026
Aug
22
Sa

Staunton Rocks

Trail Run 13 mi 26 mi
Aug
29
Sa

Rock Hawk

Trail Run 5 km 10 km 25 km 50 km
September 2026
Sep
26
Sa

24 Hours Of Palmer Lake

Trail Run 24 hr
October 2026
Oct
3-4
Sa - Su

The Bear Chase

Trail Run 5 km 10 km ... 50 mi 100 km
Oct
3
Sa

HRCA Wildcat Mountain Trail Race

Trail Run 10 km 10 mi
Oct
17
Sa

Indian Creek Trail Runs

Trail Run 5 mi 15 mi 55 km 50 mi
Oct
24
Sa

Beware The Bear Trail Races

Trail Run 5 km 15 km 20 km
November 2026
Nov
7
Sa

HRCA Backcountry Wilderness Half Marathon

Trail Run 13 mi