Burt 100
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Event details
The BURT is a trail running event on Bainbridge Island, Washington. The course is a 54-kilometer loop that links public and some private trail networks on the island. The organizer reports that 1.5 miles of former road on the course were replaced with trails for the 2026 edition. The event is held each February and offers these distances:
- 55 km
- 110 km
- 100(ish) miles
The event emphasizes use and maintenance of local trails and is organized around community and shared experience.
Registration, capacity and partners
Registration closes on Sun, Feb 1 at 11:59 PM PT. Total entry is capped at 60 runners. Current caps listed are: 54k - 35 runners; 108k - 12 runners; 100M - 13 runners. The 100-mile field is subject to vetting before an entry is accepted; registrations place entrants on a waitlist and a credit card is charged automatically if and when the entrant is approved. The event is partnered with the Bainbridge Island Parks & Trails Foundation. Organizers state that 100% of the cost to register goes to the Foundation’s Trails Fund, minus Washington state tax, the event registration service fee, and event purchases such as flagging and food. Volunteer opportunities are available with the event. Visit the organization's website for the most recent information.