Ironstone 100K

Race Details

July 12, 2025
Hollidaysburg
Pennsylvania
100K
292382899_10160169943003809_4378179873901500118_n-a87a80d5e7df76a301045c43f8fb812b

The Ironstone 100K

Legs of Iron. Resolve Like a Stone. No pacers. Minimal Aid Stations. 2 p.m. Start.

Ironstone 100K is a savage point-to-point 100 kilometer ultramarathon on the Alleghenies wildest trails. Amazing in its terrain and rich in heritage, the ultramarathon starts at Canoe Creek State Park in Blair County and utilizes the Standing Stone, Mid State, and Lower Trails before ending in Greenwood Furnace State Park in Huntingdon County. With its unforgiving technical terrain, it will be one of the most challenging ultras in the region, on par with races like Eastern States 100, Black Forest 100K and Worlds End Ultramarathon. The race begins at 2pm in Canoe Creek State Park and soon travels along the Frankstown Branch of the Juniata River on the Lower Trail – a fast and flat section of rail trail. The most unique feature of the Ironstone 100K is the ridge running atop Tussey Mountain on one of the longest named ridges in the Appalachians – a folded and fractured ridgeline of sandstone and quartzite – on the Mid State Trail. Other features include old-growth pines at Alan Seeger Natural Area, a mountain pass at Little Juniata Natural Area, craggy ledges at Indian Wells and eventually onto the Standing Stone Trail and to the finish at the historic Greenwood Furnace State Park.

Share This Race!

More Races

S7
Sinister 7 Ultra
100M
50M
50K
4K
July 12, 2025
Blairmore
, Alberta
noche-trail-runs-logo
Noche Trail Runs
13.0M
40.0M
27.0M
13.1M
July 12, 2025
Junction
, Texas
common-rush-trail-run-logo
Common Rush Trail Run
5.0M
10.0M
July 19, 2025
New Hill
, North Carolina

Join Now

Team Trail Sisters

Find a Coach

Conifer, 
Colorado

Watch Films

Today I Have the Power-min

Today I Have the Power

Add 1 race per line or separate with a comma.
$0.00

Claim Race

Heyo Race Director!

Once you’ve claimed your race allow 24-72 hours for our site admin to update the listing and transfer ownership to you. Once complete, you will receive an email notification and will be able to edit the race from your dashboard. 

Thank you!

Claiming races that are not yours will result in immediate termination of your account. 

Race Director Login