Logo

Ironstone 100K Ultra

Hollidaysburg, United States • 11-12 Jul 2026

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.

United States Pennsylvania Hollidaysburg

Race information

Website
100 km
Ironstone 100k (100 Kilometers)
Visit the organization's website for the most recent information.
Trail runs nearby

Chernisky Ghost Town Trail-a-thon

Ebensburg - 18 mi from Hollidaysburg

The Chernisky Ghost Town Trail-a-thon, held in Ebensburg, PA, is a multi-distance running and biking event set along the scenic Ghost Town Trail and C & I Extension. Participants can choose from a marathon (26.2 miles), 15-miler, 5k, or a fun "Couch Potato 0.0k" event. The marathon and 15-miler star..

Knights on the Run

Houtzdale - 27 mi from Hollidaysburg

Knights on the Run 5K is a community running event in Houtzdale, Pennsylvania (16651), located at 4934 Green Acre Rd. The day features a 5K Run/Walk on the Moshannon Valley Cross Country Course, held in conjunction with the MVE PTO Craft & Vendor Fair. Set on school grounds, the event blends sport w..

Quarry Shack 5 Miler

Vintondale - 28 mi from Hollidaysburg

Quarry Shack 5 Miler is a nighttime, 5-mile trail race held in Vintondale, Pennsylvania, on the Ghosttown Trail's Rexis Branch. It offers a Run and a Walk on a closed, out-and-back rail-trail course with no road crossings. The route is essentially flat with about 115 feet of outbound gain and a down..

Morley's Run

Johnstown - 29 mi from Hollidaysburg

Morley's Run is a community running event in Johnstown, Pennsylvania, offering a 5-mile Run and a 5-mile Walk. The atmosphere is competitive but family-oriented and welcoming to all ages. The course takes participants by Johnstown landmarks, starting at the Westmont Grove and finishing inside People..

Book It for Huntingdon Library

Alexandria - 18 mi from Hollidaysburg

The Tyrone Race Series presents Book It for Huntingdon Library on November 15, 2025 in Alexandria, PA at the Rails to Trails Alexandria Trailhead (Alfarata Station). The event includes the following distances: 5K Run 2 Mile Walk Kids Sprint (50-100 meter dash) The event includes student divisions..

Dirty Kiln Trail Races At Canoe Creek

Hollidaysburg

The Dirty Kiln Trail Races at Canoe Creek State Park in Hollidaysburg, Pennsylvania, are presented by Allegheny Trailrunners, Inc. The event offers two distances: a Short Course (about 10K) and a Long Course (half-marathon). Runners can choose the shorter route up Moore’s Hill and around the lake, o..