⚠️ 2027 edition: provisional information
The date is estimated from the 2026 edition (September 26, 2026), on the same day of the week. Courses, start times, fees and description are carried over from the previous edition: check them on the official website. This page will be updated as soon as the organizer publishes them.
Available distances
About
The Mountain Marmot is a 12-mile (19.3 km) high-altitude trail run in Durango, Colorado, on September 25, 2027, starting at 9 a.m. It features a substantial climb on singletrack to an elevation of about 11,000 feet at Purgatory Resort, followed by a descent back down.
Runners take in scenic mountain trails amid changing fall foliage.
Prepare for Mountain Marmot with RunRun
An AI-generated training plan, adjusted every week based on your real sessions. Built around your goal, current level and race date.
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Races nearby
Other upcoming races around Durango.
Steamworks Half Marathon
Jun 5, 2027 · Durango, CO · 0 mi away
13.1 mi
Durango Main Avenue Mile
Jul 4, 2027 · Durango, CO · 0 mi away
1 mi
San Juan Softie 100
Aug 13, 2027 · Durango, CO · 0 mi away
100 mi
TBK Bank Thirsty 13 Half Marathon
Aug 28, 2027 · Durango, CO · 0 mi away
13.1 mi
Kennebec Mountain Run
Aug 7, 2027 · Hesperus, CO · 9 mi away
15 mi
Hardrock 100 Endurance Run
Jul 9, 2027 · Silverton, CO · 39 mi away
100 mi