Boulder Field 100
Boulder Field 100 is listed for September 19, 2026 in Jim Thorpe, Pennsylvania, United States. Listed distances: 100K, 50K, 18 Miler. Confirm the date, registration and travel details with the official organizer before you book.
About this race
UltraSignup listed distances: 100K, 50K, 18 Miler. Organizer/group: Uber Endurance Sports. Official website: https://www.uberendurancesports.com/boulderfield.html. Registration source: https://ultrasignup.com/register.aspx?eid=5518.
Key facts
- Date
- September 19, 2026
- Events
- 100K, 50K, 18 Miler
- Surface
- Road
- Official source
- Registration page & official site
- Listing status
- updated May 23, 2026
Before you register
- 1Confirm the race-day schedule
Verify the September 19, 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, 50K, 18 Miler. 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.
Runner reviews
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