Bear Brook Trail Races
Allenstown, United States • 12 Sep 2026
Bear Brook Trail Races : Allenstown, New Hampshire
The Bear Brook Trail Races take place on September 12, 2026 at Bear Brook State Park, meeting at 157 Deerfield Road. The event offers trail distances on natural terrain including single track, steep uphills, and open blueberry fields.
- Half Marathon, intended to be as accurate to 13.1 miles as possible
- Bear Brook Trail Ultramarathon, distance varies annually between 50k and 100k
The event is a GPX only format with minimal to no course markings. Entrants are required to download the course GPX for navigation; the course will be released about one month before the race and the GPX will be sent to registered entrants. The event is a no cup race; aid stations do not provide cups or containers. Runners must supply their own bottles or soft flasks for refills.
Pets are not allowed to run with participants and crews or pacers are not permitted. There is no cutoff for the Half Marathon. Ultramarathon cutoff details will be provided when the course is released. Runners who drop out must check in at the nearest aid station, notify volunteers, and turn in their bib number. Failure to do so may result in a ban from future races.
Camping is available in the park and nearby towns include Concord and Manchester. Registration closes September 9; refund and deferment rules apply based on the time of cancellation. Visit the organization's website for the most recent information.