Boulder Field 100

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 about 4,000 feet of elevation gain per 50K, a rugged boulder field crossing, and a tough one-mile section known as the Shades of Death Trail. The terrain is mostly single-track and multi-use trails with minimal road running. Aid stations are well-stocked, and the event is known for its supportive atmosphere and mid-level difficulty, suitable for well-trained runners and hikers. Visit the organization's website for the most recent information.