Logo

Ironstone 100K Ultra

Hollidaysburg, United States • 12 Jul 2025

The Ironstone 100K Ultra is a challenging point-to-point ultramarathon set in the scenic Allegheny Mountains of Pennsylvania. Starting at Canoe Creek State Park and finishing at Greenwood Furnace State Park, the race covers a rugged 100 kilometers along the Standing Stone, Mid State, and Lower Trails. Participants will navigate technical terrain, including ridge running atop Tussey Mountain and through old-growth pines, with a strict 23-hour time limit. This event requires prior experience, as runners must have completed a qualifying 50K trail race. Finishers receive a unique medal, 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.
Trail runs nearby

Greenwood Furnace Snowfest 5-Miler

Huntingdon - 20 mi from Hollidaysburg

The Greenwood Furnace Snowfest 5-Miler is a scenic trail race taking place in Huntingdon, Pennsylvania, as part of the annual Snowfest celebration. Participants will navigate a challenging 5-mile course that includes climbs and beautiful views of Stone Valley. The event is designed for runners of al..

Dirty Kiln Trail Races At Canoe Creek

Hollidaysburg

The Dirty Kiln Trail Races at Canoe Creek, organized by Allegheny Trailrunners, Inc., is set to take place on April 13, 2024. This event features two race options: a Short Course (approximately 10K) and a Long Course (Half-Marathon), both offering a variety of challenging trails, including wide path..

Greenwood Furnace Trail Challenge

Huntingdon - 20 mi from Hollidaysburg

The Greenwood Furnace Trail Challenge is an exciting running event held at Greenwood Furnace State Park in Huntingdon, PA. Participants can choose between a challenging 10K route and a rugged half-marathon, both set against the stunning backdrop of Rothrock State Forest. The half-marathon features a..

Path Of The Flood Historic Races

Johnstown - 29 mi from Hollidaysburg

The Path of the Flood Historic Races, taking place on May 24, 2025, in Johnstown, PA, commemorates the devastating flood of 1889. This annual event features a 14-mile course starting at the South Fork Dam ruins, alongside an 8-mile race and a 5K. Runners will traverse significant historical sites, i..

Chernisky Classic

Ebensburg - 18 mi from Hollidaysburg

The Chernisky Classic is an annual running event held in Ebensburg, PA, featuring a 5K run/walk and a 10K run along the scenic Ghost Town Trail, recognized as the 2020 DCNR Trail of the Year. Scheduled for July 5, 2025, this family-friendly event includes a free Firecracker Race for children aged 8 ..

Rock 'n The Knob Trail Challenge

Claysburg - 9 mi from Hollidaysburg

The Rock 'N The Knob Trail Challenge is Pennsylvania's highest trail race, taking place in Claysburg. Scheduled for September 13, 2025, the event features three challenging courses: an Ultramarathon (50K), a Medium Distance Course (20K to 25K), and a Short Course (approximately 10K). Each course off..