Bigfoot 20 Mile Run

Cougar, United States • 14 Aug 2026

Event

The Bigfoot 20 Mile Run is scheduled for August 14, 2026, in Cougar, Washington. The race begins at Marble Mountain Sno Park and follows the southwestern side of Mt. St. Helens. The distance is 20 miles. The event takes place on National Forest lands and uses 100% single-track trails. There is a 9 hour cutoff.

Course

The route traverses volcanic and mountain terrain and includes lava fields, stream crossings, old-growth forest sections, and rocky trails. The course is described as mountainous single-track with varied surface conditions typical of Mount St. Helens area trails. Visit the organization's website for the most recent information.

Race information

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

Experience a challenging 7 mile trail run from Dog Mountain Trailhead with sweeping views of the Columbia River, Mt Hood and Mt St. Helens. Expect a steep climb to the summit and a thrilling single track descent through the Gorge.

Join the Bigfoot Fun Run in Yacolt, Washington on July 4, 2026 for a family friendly 5K or 10K run or walk. Day of registration and packet pickup available, so jump in and enjoy a festive holiday race.

Run Volcanic, a rugged trail race on Mt. St. Helens with 50K and 25K courses through boulder fields, river crossings and blast zone terrain. Start and finish at Marble Mountain Sno Park for a true backcountry challenge.

The Bigfoot 200 is a nonstop 208 mile ultramarathon through the Cascade Mountains around Mount St. Helens, featuring lava fields, ridgelines and old growth forests. Expect dramatic views, full aid and designated sleep stations.