BURT 100

Overview

The BURT is a trail running event that harkens back to the days when trail and ultra running was a niche sport for peculiar people who liked testing their limits. We offer distances of 55 kilometers, 110 kilometers, and 100(ish) miles. This event focuses on community, shared experience, and a love of the trails – largely without the accouterments of modern endurance events.

UPDATE FOR BURT 2026: Good news! Thanks to Bainbridge Island Parks and Trails Foundation work since BURT 2025, the BURT course has replaced 1.5 miles of road with trails! The BURT course is a 54 kilometer loop that links up Bainbridge Island’s best public (and some private) trail networks. Each year, the BURT committee looks to unlock new trail connectors – making each year’s BURT better than the last. And the BURT always takes place in February. The weather should be atrocious, but we always seem to hit a (frustratingly) perfect reprieve. Join us for the 2026 edition of the BURT! Have some fun. Support the trails. And join our community of peculiar people who like testing their limits.

The BURT 100 is proud to be partnered with and supported by the Bainbridge Island Parks & Trails Foundation . The cost to register for the BURT goes directly to the Bainbridge Island Parks & Trails Foundation's Trails Fund. The Bainbridge Island Parks & Trails Foundation is the community leader in the expansion of our public trails. From their behind-the-scenes work acquiring new trails easements, to coordinating the efforts of local agencies and advocates, the Foundation is a dynamic and effective force in planning, funding, building and maintaining trails island-wide. They are the nexus from which island trails multiply, grow and thrive. Your entry fee goes to the Foundation to make this work possible.

Volunteer

If you'd like to volunteer before, on, or after the 2026 BURT (it's A LOT of fun), please visit this spreadsheet: https://docs.google.com/spreadsheets/d/1YrwRYXUdrOHft-h_ApMys0Y9ti5Px3XiP7vyjdr6XbM/edit?usp=sharing

Capacity

BURT 2026 is capped at 60 runners total. We currently have the following caps in place on UltraSignup:

• 54k: 30 runners
• 108k: 15 runners
• 100M: 15 runners

| IMPORTANT: For your safety and ours, we will vet all 100Mers before accepting your registration to make sure you have a plan in place. At this point there are 15 open spots, but if you register, you'll be waitlisted (you won't be charged) until you've been accepted/vetted off the waitlist.