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Ironstone 100K Ultra

Hollidaysburg, United States • 12 Jul 2025

The Ironstone 100K Ultra is a challenging ultramarathon set in the scenic Allegheny Mountains, starting at Canoe Creek State Park and finishing at Greenwood Furnace State Park. This point-to-point race features a mix of technical terrain, including ridge running atop Tussey Mountain and sections along the Juniata River. Participants must complete the race within 23 hours, facing limited aid stations and night running.

To enter, runners must have completed a qualifying 50K trail race. Finishers receive a unique medal, a flannel shirt, and complimentary beverages. The event promises an unforgettable experience for seasoned ultrarunners. Visit the organization's website for the most recent information.

United States Pennsylvania Hollidaysburg

Race information

Website Registration
100 km
100k
Visit the organization's website for the most recent information.
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