Harriman 25K/50K Trail Run

The Harriman Park 25K/50K Trail Run, scheduled for August 23, 2025, offers a scenic and well-curated trail running experience near Island Park, Idaho. The event features three distances: an 8.1-mile race, a 25K, and a 50K, with the latter being part of the Idaho Trail Ultra Series. Runners will enjoy beautiful single-track trails through forests and meadows, with stunning views of the Teton Mountains.

Aid stations provide a variety of refreshments, and post-race festivities include a meal overlooking the Henry’s Fork River. The race emphasizes a wilderness feel with limited registration to ensure an uncrowded, memorable experience. Visit the organization's website for the most recent information.