Carkeek 12 Hour

The Carkeek 12 Hour is an annual running event held at Carkeek Park in Seattle, Washington, organized by Endless Trails, a non-profit dedicated to trail advocacy. Scheduled for October 25, 2025, the event features both in-person and virtual options, allowing participants to run for either 6 or 12 hours on a scenic 1.93-mile loop with challenging terrain. Emphasizing fun and community, the race encourages costumes, with prizes for the best outfits.

Proceeds from the event support local trail work and education, making it a festive and meaningful experience for all participants. Visit the organization's website for the most recent information.