Eastern States 100
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Event overview
The Eastern States 100 is a single-loop ultramarathon in Pennsylvania’s Wilds. The course distance is 103 miles and the route circumnavigates the Pine Creek watershed. The event date is August 8, 2026.
Course, entry and organiser
The route is described as the Circumnavigation of the Lost and Bewildered River and runs on trail terrain with more than 20,000 feet of climbing. The race is not entry-level and a 2026 qualification standard is published. Registration for the 2026 race opens October 1, 2025. The event is presented by the Eastern States Trail-Endurance Alliance, which manages this race alongside the Ironstone 100K and the Eagleton Trail Challenge and states a focus on trailrunning and responsible use of public lands. Visit the organization's website for the most recent information.
