Harriman 25K/50K Trail Run

The Harriman 25K/50K Trail Run, held annually at Harriman State Park near Island Park, Idaho, offers a scenic and well-curated trail running experience. The event features three distances: an 8.1-mile race, a 25K, and a 50K (two laps of the 25K course). Runners enjoy beautiful single-track trails through forests and meadows with stunning views of the Teton Mountains and local valleys, alongside potential wildlife sightings.

Aid stations provide a variety of refreshments and treats, with multiple visits depending on the race distance. Post-race festivities include a relaxed meal by the Henry’s Fork River. The race limits entries to maintain an uncrowded, wilderness atmosphere and is part of the Idaho Ultra Trail Series. Visit the organization's website for the most recent information.