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Ironstone 100K Ultra

Hollidaysburg, United States • 12 Jul 2025

The Ironstone 100K Ultra is a challenging 100-kilometer point-to-point ultramarathon held in the Allegheny Mountains of Pennsylvania. Starting at Canoe Creek State Park in Blair County and finishing at Greenwood Furnace State Park in Huntingdon County, the course traverses rugged trails including the Standing Stone, Mid State, and Lower Trails. Notable features include ridge running atop Tussey Mountain, old-growth pines at Alan Seeger Natural Area, and craggy ledges at Indian Wells. The race demands technical skill, with limited aid stations, no pacers, and night running, all to be completed within 23 hours. Finishers receive a unique metal award, a flannel shirt, and complimentary beverages. 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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