Harriman 25K/50K Trail Run

Island Park, United States • 23 Aug 2025

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 abundant wildlife.

Aid stations provide a variety of refreshments and treats, visited multiple times depending on the race distance. Post-race festivities include a relaxed meal by the Henry’s Fork River. The race limits entries to 125 runners to maintain an uncrowded, wilderness atmosphere. Visit the organization's website for the most recent information.

Race information

50 km
50k
25 km
25k
Visit the organization's website for the most recent information.
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