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Trail Running Calendar near Castle Rock 2026-2027

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Explore the top trail runs near Castle Rock for 2026-2027! We've gathered 21 exciting races in the area. Check out our detailed list below to find your next local race.

October 2026
Oct
25
Su

Beware The Bear Trail Races

Trail Run 5 km 15 km 20 km
Oct
31
Sa

HRCA Backcountry Wilderness Half Marathon

Trail Run 13 mi
November 2026
Nov
7
Sa

Sandstone Sixer

Trail Run Backyard Ultra
December 2026
Dec
5
Sa

Sawmill Trail Runs

Trail Run 50 km
Dec
5
Sa

Kingfisher Half Marathon

Trail Run 5 km 10 km Half Marathon
Monthly updates for Castle Rock

Get new running races (and updates) in your inbox every month.
January 2027
Jan
9
Sa

Frozen Devil’s Head

Trail Run 22 mi
March 2027
Mar
20
Sa

Far Out 3/4 Marathon

Trail Run 5 km 10 mi 32 km
April 2027
Apr
3
Sa

Popeye's Backyard Ultra

Trail Run Backyard Ultra 4 mi
Apr
10
Sa

Mountain Ridge Trail Race

Trail Run 3 mi 6 mi 13 mi 22 mi
May 2027
May
1
Sa

Greenland Trail Races

Trail Run 4 mi 8 mi 25 km 50 km
May
1
Sa

Niwot's Challenge

Trail Run 24 mi 50 mi 100 mi
May
22
Sa

Farish Trail Race

Trail Run 5 km 10 km 13 mi
May
30
Su

North Fork 50 Mile

Trail Run 50 km 50 mi
May
30
Su

Rueter-Hess Trail Run

Trail Run 10 km
August 2027
Aug
14
Sa

Pat's Pony Express

Trail Run 8 mi 16 mi
Aug
14
Sa

Roxborough Ultras

Trail Run 31 mi 51 mi
Aug
21-22
Sa - Su

Staunton Rocks

Trail Run 13 mi 26 mi
Aug
28
Sa

Rock Hawk

Trail Run 5 km 10 km 25 km 50 km
September 2027
Sep
18
Sa

Elk Falls

Trail Run 6 mi 14 mi
Sep
19
Su

Expo Park XC Run

Trail Run 3 km 4 km 5 km
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