Harriman Trail Runs
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About the race
Harriman Ultra Trail Runs take place in Harriman State Park near Island Park, Idaho. The event offers multiple distances that start and finish on the east lawn of The Boy's House. Lunch is included for registered runners; extra meals are available for guests.
Distances
- 50K / Venti
- 25K / Grande
- 10K / Tall
- 1K / Short
The primary loop is 25K; 50K runners complete two loops. The 10K follows the Silver Lake Trail after two-track access to the aid station. The 1K kid's run follows the gravel loop through the historic Railroad Ranch. Trails include forest and meadow sections, gravel, two-tracks, and pine-needle single track with views of the Teton Mountains and the local valley. Course markings include directional arrows, ribbons, signage and mileage; updated GPX files will be shared.
Aid stations include one on-course station accessed multiple times plus a start/finish station. Typical aid fare is offered, such as cookies, chips, soda, candy, pickles, water and sports drink. This is a cupless event; participants must bring their own drinking vessel. Visit counts: 10K one visit, 25K two visits, 50K four visits.
Logistics note that there is no camping inside the park; yurts and park buildings are rentable. Nearby campgrounds, hotels and nightly rentals are available within a short drive. Check-in is scheduled at Last Chance Gas Station late Friday and at The Boy's House on race morning. Standard trail etiquette applies; dogs are not allowed in the park except in parking areas. Refunds are available only if the race is full and a waitlist replacement exists; there are no rollovers and entries cannot be transferred. Visit the organization's website for the most recent information.