Bigfoot 20 Mile Run
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Bigfoot 20 Mile Trail Race
The event begins at Marble Mountain Sno-Park and follows the southwestern side of Mount St. Helens, a volcano that erupted in 1980. The route is entirely on National Forest lands.
Runners follow 100% singletrack trail through varied volcanic and forest terrain. The course passes lava fields, stream crossings, and old growth forest sections, and includes sustained mountain running. The listed distance is 21.1 miles with an elevation gain of 4,178 feet and an elevation loss of 4,146 feet.
There is one full aid station located at mile 12.2. The race enforces a nine hour cutoff for completion.
Course details and maps are provided by the organizer. The description focuses on trail conditions, terrain features, and measured course statistics to help participants plan for the route and support locations. Visit the organization's website for the most recent information.
