Bigfoot 20 Mile Run

Cougar, United States • 14 Aug 2026

Bigfoot 20 Mile Trail Race

The Bigfoot 20 Mile is a trail race on the southwestern side of Mount St. Helens. The course begins at Marble Mountain Sno Park and follows single-track trails across volcanic terrain created by the 1980 eruption.

The route covers 20 miles of varied mountain terrain. Runners pass lava fields, cross streams, and move through sections of old growth forest. The course is described as 100% single-track and is entirely on National Forest lands.

Event logistics noted by the organizer include a 9 hour cutoff. Examples of scheduled race dates include August 14, 2026 and August 13, 2027. The description emphasizes mountain trail running across rocky and forested sections near Mount St. Helens without additional venue or timetable specifics. Visit the organization's website for the most recent information.

Race information

20 mi
Bigfoot 20 Mile
Visit the organization's website for the most recent information.
Trail runs nearby

A 200 mile point to point trail race around Mount St. Helens with 13 aid stations and six sleep stations, organized by Destination Trail, Aug 14–18, 2026.

Trail races at Mt. St. Helens Science & Learning Center offering 50K, 20 mile and half marathon loops with significant elevation and aid stations.

Timed endurance event at Donald Farm in Woodland WA with 6 hour, 12 hour, and 24 hour formats on a 1 mile loop through the Warrior Expo.

A Halloween-themed race day at Pacific Community Park featuring youth and community 2k–5k courses on grass and compact trail, with medals and holiday prizes.

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