Boulder Field 100K/50K/18M

Event Details

The Boulderfield 100K/50K/18M is organized by Uber Endurance Sports, showcasing a well-established reputation for quality trail running events. This race, with an elevation gain of about 4000ft per 50k loop, offers a unique challenge.

Race Distances

• 100 km Ultra Run
• 50K Ultra Run and Mega Hike
• 18M Run/Hike

Registration and Fees

Registration remains open until just before the race day:

• 50K: $85 (til 5/15), $89 (til 8/15), $95 (after)
• 100K: $99 (til 5/15), $109 (til 8/15), $115 (after)
• 18M: $59 (til 5/15), $65 (til 8/15), $69 (after)

Race Date and Location

Date: Saturday, September 13, 2025
Location: Hickory Run State Park, Route 534, Jim Thorpe, PA 18229

Aid Stations and Course Info

Expect aid stations approximately at mile 5, 10, 12, 19, 25.5 for the 50K and 100K distances. Runners are advised to carry fluids between stations and to use gels as needed.

Time Limits

100K: 16-hour limit
50K: 14-hour limit

Awards

All finishers will receive a finisher award. Top 3 overall and age group awards will also be given.

Important Information

A refund policy is in place for cancellations made prior to August 15, with certain conditions. Bib transfers are not permitted without prior arrangement.