Ironstone 100K Ultra
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About the race
Ironstone 100K is a rugged, point-to-point ultramarathon staged in the Allegheny foothills of central Pennsylvania, around Huntingdon County's Alexandria. The race covers 100 kilometers on some of the wildest trails in the area, and is pitched as one of the East Coast’s most challenging ultras. Runners face a sparse, austere setup with minimal aid stations and no pacers, contributing to a demanding, self-reliant atmosphere.
The course, branded as the Ironstone Tramline, is documented with maps and narrative guides on the organizers’ site. The event’s motto, Legs of Iron. Resolve Like a Stone, encapsulates the gritty spirit.
Scheduled for July 11–12, 2026. Visit the organization's website for the most recent information.