Bigfoot 20 Mile Run
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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.
