Harriman 25K/50K Trail Run

The Harriman 25K/50K Trail Run, scheduled for August 23, 2025, is a premier trail running event held at Harriman State Park near Island Park, Idaho. Celebrating its eighth year, the race offers a unique experience for both seasoned and novice runners, featuring meticulously designed courses that showcase stunning views of the Teton Mountains and abundant wildlife. Participants can choose from three distances: 8.1 miles, 25K, and 50K, with a focus on providing high-quality aid stations and post-race festivities.

The event emphasizes a low-key atmosphere, limiting the number of runners to enhance the wilderness experience. Visit the organization's website for the most recent information.