Carkeek 12 Hour
Seattle, United States • 24 Oct 2026
Event Overview
The Carkeek 12-Hour is a trail run taking place in Carkeek Park in Seattle, Washington. The event will be held on October 24, 2026. A virtual event option is available to run anywhere from October 1-31, 2026. It is described as the 20th annual edition. There is also a 6-hour race option, which starts at 9 AM.
Race Details
Participants run a 1.93-mile looped course. Each loop has 436 feet of elevation gain. The terrain includes rolling trails, steep stairs, and some flat sections. The course offers views of the Puget Sound. A video course preview is available online.
The event is capped at a maximum of 50 runners. It is organized by Endless Trails, a non-profit where all proceeds go to local trails. The event is described as low-key and old-school, featuring hand-made bibs and lap counting with star stickers.
Atmosphere and Extras
The event takes place on Halloween weekend. Costumes are encouraged, with prizes awarded for costumed running, best group costume, and pets in costumes. The aid station offers candy and "tasty ultra fare." The atmosphere is described as festive, with a community focus on fun and high-fives. Well-behaved, leashed dogs are allowed.
The race is noted as being good training for tough and technical ultras. Visit the organization's website for the most recent information.