Boulder Beast

SEP
19
2026
The Boulder Beast in Lock Haven, PA, is a demanding trail run featuring a famous boulder field and diverse terrain. Runners can choose between a 25-mile or 25K distance, both with strict daylight cut-off times. The event includes camping, a pre-race party, and a post-race picnic.
Sat 19 Sep 2026
25 miles 25 kilometers

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Event Details

The Boulder Beast is a trail running event held in Lock Haven, Pennsylvania. The start and finish area is located at the Castanea Township Fire Company picnic grounds. The event takes place on trails known as Goat Path, Lightning Ridge, Gut Check, Black Diamond, Crossover, Fleming Way, Chestnut Flats, and the Gorge Trail.

Distances

The event offers two distances:

  • 25 miles
  • 25 km

Course Information

The course is known for its boulder field. The organizers note that the event is demanding and requires rigorous training due to the tough and diverse terrain. There are strict cut-off times at various aid stations along the course to ensure participants finish in daylight. Aid station names include Boy Scout AS, Zindel Park AS, Vets+ AS, and Leadership CC AS.

For the 25-mile distance, if a runner arrives at the Boy Scout aid station after 11:00 AM, they will be automatically directed onto the 25K course. For the 25K distance, runners must reach the bottom of the boulder field by 10:30 AM. The first 3.5 miles are on road.

Logistics

Registration opens on December 16th and is limited to the first 600 runners, with a registration deadline of September 1st. There are no refunds, bib transfers, deferments, or transfers of registration permitted.

There is free parking and camping space available at the start/finish area, with no reservations needed. A pre-race party and bag pick-up are scheduled for the Friday evening before the event from 4:00 PM to 8:00 PM. After the race, there is a post-race picnic with food and beverages. Visit the organization's website for the most recent information.

25 mi
25 Miler
25 km
25k