Boulder Field 100
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Event overview
Boulder Field 100 is a trail running event at Hickory Run State Park in Jim Thorpe, Pennsylvania held on September 12, 2026. The event offers multiple distances and uses a 50K loop that serves as the basis for the longer race. Registration closes on September 7, 2026.
Distances
- 100 km
- 50K
- 18 miles
Course and difficulty
The full course is inside Hickory Run State Park. The layout is a figure-8 shaped 50K loop; 100K entrants run the loop twice. Elevation is estimated at about 4,000 ft per 50K loop. About 90% of the route is single-track or wider multi-use trails, with roughly 1 mile of gravel road. Notable sections include a boulder field crossing (under 1 mile) and the "Shades of Death" trail, an approximately 1-mile rugged section.
Time limits, aid and services
Time limits are set at 16 hours for the 100K and 14 hours for the 50K. Aid stations are at approximate mile markers: 5, 10, 12, 19, 25.5 for both distances, with additional stations on the 100K at about 31, 36, 41, 43, 50, and 55.5 miles. Water and Gatorade are available at all aid stations. Runners are advised to carry at least 16 oz of fluid between stations and to bring any preferred gels. Bib pickup takes place at the pavilion next to Sand Spring Lake in Hickory Run State Park on the day before and the morning of the event. Fees vary by distance and by registration date. Visit the organization's website for the most recent information.
