Carkeek 12-hour Seattle, WA   Oct 25, 2025

The Carkeek 12-hour race is tough, and also ridiculously fun. We have both a 12-hour, and a 6-hour option. With gorgeous views of the Sound, varied terrain (rolling trails, steep stairs, a section or two that might generously be called “flat”), and a festive atmosphere, we think this is a race you (and your family, and friends, and well-behaved, leashed dogs) will just keep coming back to – one 1.93-mile (or .54 mile, for the short loop) lap at a time. Run for twelve hours, run for six. Run as few or as many hours as you like.

Carkeek’s run on a counter-clockwise, 1.93-mile loop in Seattle’s Carkeek Park, with an additional .54-mile loop open once the run rises (to give you more distance options). You’re welcome to run as few or as many loops as you like, but here’s what to expect on each loop: steep stairs, rolling trails, gorgeous vistas, loads of single-track, lots of up and lots of down. Each loop contains 436′ of vertical gain, so expect to (have fun, yes!, and) be challenged. It’s going to hurt, but it’s also going to be a blast, we promise.