Big Day Brewing 24 Hours of Great Glen 2026

Riders at Big Day Brewing 24 Hours of Great Glen spend a full summer weekend looping around the base of Mount Washington in New Hampshire's White Mountains. This mountain bike race and festival offers 24-hour and 12-hour divisions, with solo riders, single-speed solo riders, and teams of two, four, or more attempting to finish as many laps as possible before time expires. There is no minimum lap requirement, so the event suits those pursuing a tough endurance result and groups who value the campout, music, and relay atmosphere as much as the competition. The lap covers approximately 9 miles, combining carriage roads, doubletrack, bridges, and technical singletrack, including the floating bridge over Glen Pond. Around 475 riders navigate the course, where the culture blends endurance testing with a campground party: costumes, shared encouragement, cheers from onlookers, quiet night riding, sore muscles, beer from Big Day Brewing, a bacon lap, grilled cheese, children's events, and live music are all part of the weekend. The race has occurred for over 25 years, with recurring themes like under the sea and prehistoric times contributing to the Great Glen identity.