Burt 100
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About the race
The BURT 100 is a winter trail running event on Bainbridge Island, Washington, held in February. The event offers three distances and uses a 55 kilometer loop course that links several public and some private trail networks on the island. Recent course changes include a boardwalk bridge through Lost Valley that replaces a muddy section and the addition of a fourth hill on the loop.
The event emphasizes community and support for local trails. Registration revenues for the race go directly to the Bainbridge Island Parks and Trails Foundation Trails Fund after state tax, the registration platform fee, and event purchases are deducted. The Foundation supports trail acquisition, planning, building, and maintenance on the island.
Volunteer opportunities are organized for work before, during, and after the event through an online sign-up list. The 2027 edition is capped at 65 runners in total with per-distance caps currently listed as follows:
- 55K
- 110K
- 100M
The organizer vets entrants to the 100 mile field for safety and planning. At the time of this notice the 100 mile field had no open spots. Visit the organization's website for the most recent information.
