Eastern States 100
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Event
Eastern States 100 is an ultramarathon held in the Pennsylvania Wilds. The race is a single-loop course of 103 miles that circumnavigates the Pine Creek watershed. The course includes more than 20,000 feet of climbing. The 2026 edition is scheduled for August 8, 2026. Registration opened Oct. 1.
Course and support
Course materials include maps, charts, and a course narrative. Aid Station 3 - Lower Pine Bottom is listed as the first crew-accessible aid station and is described as a major gathering point for crews and spectators. The event has a participant cap that has recently increased.
Organization
The race is organized by the Eastern States Trail-Endurance Alliance (ESTEA), a local, all-volunteer organization. ESTEA also manages other trail events including SHEastern States, Ironstone 100K, and the Eagleton Trail Challenge. The organization states a stewardship focus on trails, trailrunners, and supporting communities. Visit the organization's website for the most recent information.
