Harriman 25K & 50K Trail Run Island Park, ID   Aug 15, 2026

The Harriman Trail Races have been expertly curated with the discerning trail runner in mind. Every attempt has been made to provide the ultimate in artisanal trail racing for both the wise and sage runner as well as the newcomer to the trail racing scene. Careful attention has been paid to the design of the event, the course, the distances, the aid station fare, the critical placement of wildlife for your viewing enjoyment, random gift giving, and the post race food and beverages.

We are also strictly limiting the number of runners so as to also provide that uncrowded, wilderness feeling (even though you can see the town of Island Park in the distance). We believe we have truly developed what will be a sublime experience in your trail running career. One that you will remember for at least a week. The Harriman 50K will be a part of the Idaho Ultra Trail Series sponsored in part by The Pulse Running & Fitness Store. Being a part of this series will add immeasurably to your trail running street cred.