Plain Endurance Runs

SEP

19

2026

The Plain Endurance Runs are remote, self-supported races on Forest Service trails in the Cascade mountains. Distances include a 100K and a 100-mile event with significant elevation change. It is a non-profit event supporting local Search and Rescue and veterans.

Sat 19 Sep 2026

Leavenworth, Washington

Website Registration

100 miles 100 kilometers

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Event Information

The Plain Endurance Runs take place on US Forest Service trails and roads in the Cascade mountains. The course is located in the Lake Wenatchee, Entiat, and Chelan ranger districts.

Course Details

The route is approximately 85 miles of trail and 20 miles of forest service road. The terrain is remote. The total elevation gain and loss is roughly 21,000 feet. This is a self-supported running event. Runners have one re-supply point available after the first 100K. Water is sourced from creeks and rivers along the course. Participants must carry all their food and necessary gear from the start or from the resupply point.

Distances

100K
100 Mile

Additional Notes

This is a non-profit event. All proceeds are directed to local Search and Rescue groups and military veteran support organizations. A qualification standard exists for the 100-mile distance, requiring prior completion of a trail 100-mile race or the Plain 100K. Visit the organization's website for the most recent information.

100 mi

Plain 100 Miler

100 km

Plain 100k