Ironstone 100K Ultra
Ironstone 100K Ultra is listed for July 11, 2026 in Hollidaysburg, Pennsylvania, United States. Listed distances: 100K. Confirm the date, registration and travel details with the official organizer before you book.
About this race
UltraSignup listed distances: Ironstone 100K. Organizer/group: ESTEA. Official website: http://www.ironstone100K.com. Registration source: https://ultrasignup.com/register.aspx?eid=15852.
Key facts
- Date
- July 11, 2026
- Events
- 100K
- Surface
- Trail
- Official source
- Registration page & official site
- Listing status
- updated May 22, 2026
Before you register
- 1Confirm the race-day schedule
Verify the July 11, 2026 start times, packet pickup (collecting your race bib) and corral (your assigned start group) instructions on the official source before booking travel.
- 2Pin the exact start area
Use Pennsylvania as the planning region, then confirm the precise start, finish, parking and transport with the organizer.
- 3Pick your distance
Listed options are 100K. Check the source for current per-distance availability and limits.
- 4Review entry terms
Read entry rules, refund terms, participant limits and transfer rules before you pay.
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