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Colorado Trail Running Calendar 2026-2027

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Explore the best trail runs in Colorado for 2026-2027! Our updated list features 145 exciting races across the region. Find your next race in Colorado below and join the running community at these great events!

Trail Running Calendar United States
August 2027
Aug
7
Sa

Winter Park 50K

Trail Run 10 km Half Marathon 50 km
Aug
7
Sa

Sheep Mountain Ultras

Trail Run 13 mi 50 km 50 mi
Aug
7
Sa

Kennebec Mountain Run

Trail Run 15 mi
Aug
14
Sa

Pat's Pony Express

Trail Run 8 mi 16 mi
Aug
21
Sa

Mt. Sneffels Half Marathon & 10K

Trail Run 10 km 13 mi
Monthly updates for Colorado

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