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Trail Running Calendar near Westminster 2026-2027

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Explore the top trail runs near Westminster for 2026-2027! We've gathered 26 exciting trail runs in the area. Check out our detailed list below to find your next local trail run.

October 2026
Oct
25
Su

Monsterdash - Louisville

Trail Run 5 km 10 km Half Marathon
MonsterDASH Louisville on Oct 25, 2026 offers a new half marathon plus 5k, 10k and a kids mile with costume contests, expo, and themed runner perks.
Oct
31
Sa

Eerie Erie

Road Race Trail Run Walk 5 km 10 km
A Halloween themed 5k and 10k through historic downtown Erie and Coal Creek trails, with a kids Goblin Run and BOLDERBoulder qualifier status. The event supports the Erie Optimist Club as its primary fundraiser.
November 2026
Nov
7
Sa

HRCA Backcountry Wilderness Half Marathon

Trail Run 13 mi
Experience 13.1 miles of singletrack trails and hills in the Highlands Ranch Backcountry Wilderness Area. Enjoy custom medals and a post race pancake breakfast while competing for cash prizes in various categories.
Nov
14
Sa

Louisville Trail Race

Trail Run 5 km 10 km 13 mi
Trail races in Louisville Colorado offering a half marathon, 10K and 5K on dirt trails with views of the Flat Irons and on course aid stations.
December 2026
Dec
5
Sa

Sawmill Trail Runs

Trail Run 50 km
June 2027
Jun
26
Sa

Rueter-Hess Trail Run

Trail Run 10 km
A trail event near Parker Colorado featuring a 10k with a stepped incline, a kids one mile on the same start, age and gender based staggered starts, aid stations on the loop, and volunteer entry options.
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