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Boulder Field 100

White Haven, United States • 13 Sep 2025

The Boulder Field 100 is a challenging trail running event held at Hickory Run State Park in Jim Thorpe, Pennsylvania. It offers three distances: 100K, 50K, and an 18-mile run/hike. The course features a figure-8 shaped 50K loop, with 100K participants running the loop twice.

Runners encounter a mix of single-track and multi-use trails, including a rugged one-mile section called the Shades of Death Trail and a boulder field crossing, adding to the race's mid-level difficulty. Elevation gain is about 4,000 feet per 50K loop. Aid stations are well-stocked, and the event is known for being well-organized and beginner-friendly despite its challenges. Visit the organization's website for the most recent information.

United States Pennsylvania White Haven

Race information

Website Registration
100 km
4000 m+
100 Km Ultra Run
50 km
4000 m+
50k Ultra Run and Mega Hike
18 mi
18m Run/hike
Visit the organization's website for the most recent information.
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