Ironstone 100K Ultra

JUL
10-11
2027
Point to point 100K through Pennsylvania ridge and river trails, featuring Tussey Mountain ridge running, technical terrain, and a 23 hour cutoff, finishing at Greenwood Furnace State Park.
10-11 Jul 2027
100 kilometers

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Ironstone 100K

The Ironstone 100K is a point to point 100 kilometer ultramarathon in the Ridge and Valley region of Pennsylvania. The course starts at Canoe Creek State Park in Blair County and finishes at Greenwood Furnace State Park in Huntingdon County. It follows the Standing Stone, Mid State, and Lower Trails.

The route includes a fast, flat rail trail section along the Frankstown Branch of the Juniata River on the Lower Trail and extensive ridge running atop Tussey Mountain on the Mid State Trail, with sandstone and quartzite ridgelines. Other landmarks along the course include old growth pines at Alan Seeger Natural Area, a mountain pass at Little Juniata Natural Area, and craggy ledges at Indian Wells before the route joins the Standing Stone Trail to the finish. The course contains technical terrain, a limited number of aid stations, no pacers, and sections of night running. Runners must complete the distance within 23 hours. Finishers receive a metal award, a flannel shirt, and free beer and beverages. Visit the organization's website for the most recent information.

100 km
100k Point-to-Point

Events nearby

A 2 mile untimed trail loop at Camp Anderson where runners, walkers and costumed zombies navigate marked zombie zones to protect flag belts and raise funds for local organizations.
A trail event at Brush Mountain Sportsmen’s Association in Altoona with 10K and 5K races, a 5K walk, and a half mile youth race for ages 5 to 12. Awards and a post race gathering follow the races.
A community 5K, 2 mile walk and kids sprint on November 14, 2026 at Rails to Trails Alexandria Trailhead supporting the Huntingdon County Library.
Trail races at Canoe Creek State Park on April 10, 2027 offering a 10K loop and a 13.1 miles course across varied, often muddy, trails.
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