IRONSTONE 100K: Legs of Iron. Resolve Like a Stone.

There are race shirts. There are race buckles. And then there is the Ironstone 100K Finisher Flannel. It is reserved exclusively for those who possess Legs of Iron and Resolve Like a Stone: the runners who conquer the Ironstone 100K course and arrive at the finish line in under 23 hours.

DCNR's Trail Work Volunteer Portal for Ironstone 100K at Rothrock State Forest is live! If you want to give us a hand by cleaning up the trails leading up to Ironstone 100K, record your hours.

…Tell your friends that have been boycotting social media! Although social media has been our main communication, we appreciate that Facebook is not for everyone. Training runs and course previews will be posted on Strava, and will still be posted on Facebook as per usual. If you are planning on a training run and want to open it up to others, post away! There is no expectation to be registered for the race to participate in this Strava group or these events. This is for COMM

If you’re planning to run Ironstone this July 11–12, lock in your lodging ASAP. This isn’t your typical race weekend as regional demand is about to spike in a big way. What’s going on? 👉 A major multi-day event in Altoona / Hollidaysburg Taking place in the days leading up to and including race weekend, this soon-to-be-announced event is expected to draw 250,000+ visitors . That’s a massive influx for Blair County and will significantly tighten hotel and rental availability

In our never-ending quest to sharpen Ironstone 100K without dulling its teeth, we’re rolling out a few course-support updates for 2026: 1 – New Aid Station (AS7: Jackson Trail) We’re upgrading the former unmanned, water-only spot between PA-26 and the Jackson Trail trailhead to a manned water-only aid station. Why? Because it’s tough to monitor water levels when no one’s there, and that long 5–6 hour overnight stretch from Indian Steps to Little Flat Tower deserves an extra

At Eastern States Trail-Endurance Alliance (ESTEA)—home of Eastern States 100, SHEastern States, Ironstone 100K, and the Eagleton Trail Challenge—we’re proud to be a local, all-volunteer, grassroots organization. Everything we do is built on stewardship: for our trails, for our trailrunners, and for the communities that support and sustain us. One of our core missions is to strengthen unity and cooperation among trailrunners, fellow users of public lands, and the towns and or

Friends and participants – We’ve got an important course update for you. On the Lower Trail, the Dilling Bridge (mile 11.4 of the...

The Ironstone 100K coincides with the Huntingdon County Fireman’s Festival in Alexandria Saturday afternoon/evening. As a result, Main...

Bib numbers have been assigned—find yours now on our Ultrasignup registration page: https://ultrasignup.com/entrants_event.aspx?did=11878...

Medal? You want to know what our medals are made of? Well, back in my day, we had a thing called metal. Not that cheap stuff made from...

In Greek mythology, Charon ferried souls across the River Styx to their judgment in Hades. At Ironstone, we’ve got The Doom Buggy —your...

A courier dropped off several suspiciously heavy parcels on my stoop yesterday. Inside? The 2025 Ironstone 100K Participant Pint Glass ....

Oh the places you’ll stick ‘em, the spots they might land On a lunchbox, a lamppost, a tuba, a hand! You’ll find in your swag bag (we...

Ironstone 100K 'Dirty Little Secret': Course marking and navigation - 43.8 miles of the Ironstone 100K course is blazed orange. The...

If Pulitzer Prize-winning historian and writer David McCullough had laced up trail shoes and run ultramarathons, the Ironstone 100K...

Yo, Logistic Boy Blake and CoRD Pat here! We said pack light — not your whole damn house, You rollin’ in deep like a storage warehouse....

After leaving AS6 Indian Steps and down Harry Valley Road for 0.4 miles , runners face the Indian Steps —a brutal 500-ft climb straight...

Mile 26.7–27.7: AS5 Colerain via Rainbow Trail and Colerain Road. On The Mid State Trail atop Tussey Ridge , runners will descend...

Leaving AS 4: Alfarata Station, runners cross a paved road and follow Brickyard Road, a dirt state forest road, before turning onto the...