Plain Endurance Runs

Leavenworth, United States • 19 Sep 2026

Event overview

The Plain Endurance Runs take place in Plain, Eastern Washington on September 19, 2026. The event offers an ultrarunning format with options that differ by loop length. Historically the race has had a low finish rate; during the first eight years there were only four finishers, and more recently about 50% of starters finish. Volunteers staff checkpoints, but the course provides no pacers, no course markings, and no aid stations. Participants must manage their own support and navigation between checkpoints.

Course and race options

  • 100 miles - two loops
  • 100 km - one loop instead of two

The organizer material emphasizes self-reliance on course and limited external assistance at checkpoints. The event has separate pages for race details, rules, and course directions. Visit the organization's website for the most recent information.

Race information

100 km
Plain 100k
Visit the organization's website for the most recent information.
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