Boulder Field 100
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Boulder Field Ultra
The Boulder Field Ultra is a trail event on Saturday, Sept 12, 2026, at Hickory Run State Park near Jim Thorpe, PA. The start area is at Sand Spring Lake Pavilion in Albrightsville. Entry is strictly limited to 400 runners and hikers.
Choose from these distances:
- 100K
- 50K
- 18 Miler
The course uses a figure-8 50K loop contained within the state park. 100K participants complete the loop twice. Each 50K loop has approximately 4,000 feet of elevation gain. About 90% of the route is single track and multi-use trail, with roughly 1 mile of gravel road per loop. The route includes a sub-1-mile boulder field crossing and a roughly 1-mile Shades of Death trail section, both noted as very difficult.
Aid stations provide Gatorade, water, snacks, and carbohydrates; participants are asked to carry at least 16 oz of fluid. Aid station locations are listed by mile for each distance. Gear drop is available at the start/finish with access at designated aid stations. Crew access varies by aid station; some are walk-in only while others have parking. Portable restrooms are placed at several points on course. A headlamp is required starting at mile 43. Hot showers are typically available after the event.
Every finisher receives a custom award. Top overall and age group awards are given. Refunds are available until 8/15 with a fee; after 8/15 there are no refunds or deferrals. No unauthorized bib transfers are permitted; transfers must go through the organizer. Visit the organization's website for the most recent information.
