Plain Endurance Runs

Plain Endurance Runs

Plain Endurance Runs are trail ultramarathons held near Leavenworth, WA, based at 14400 Chiwawa Loop Rd. The event uses USFS trails and forest roads in the Cascade mountains across the Lake Wenatchee, Entiat, and Chelan ranger districts.

Distances:

• Plain 100K
• Plain 100 Mile

The course includes approximately 85 miles of trail and 20 miles of forest service roads. The route is remote and features roughly 21,000 feet of total elevation gain and loss. Water must be sourced from creeks and rivers on the course. The event is self-supported; runners carry all food and necessary gear from the start or from the single resupply point that comes after the first 100K.

Qualification standards differ by distance. The Plain 100 Mile requires prior completion of a TRAIL 100 mile or the Plain 100K, or an equivalent very challenging self-supported event. The Plain 100K has no formal qualification requirement, though a challenging 50 mile event is noted as a minimum ability reference.

This is a non-profit event. Proceeds go to local Search and Rescue and military veteran support groups. Registration closes on Mon, Aug 31 at 11:59 PM PT. Refunds are not provided unless the event is cancelled; in that case some funds may be withheld to cover direct expenses.

The 2025 race was cancelled because Pomas fire closure boundaries included most of the course. Organizers indicated the boundaries were unlikely to change soon and stated plans to resume in 2026. Visit the organization's website for the most recent information.