Lumberjack 100 - Port Gamble, WA

The West Seattle Monster Dash is an annual costumed 5K trail run/walk held at Lincoln Park in Seattle, WA. The 14th edition takes place in October 2025 and features a 5K Run/Walk, a Kids Monster Dash for children 12 and under, and a "Just a Shirt!" option. Participants receive a t-shirt with the ico..

The Carkeek 12-Hour is scheduled as an in-person event on October 25, 2025, with a virtual option available October 1-31, 2025. The event takes place at Carkeek Park in Seattle, Washington (950 North West Carkeek Park Road). Registration is capped for this event series at 50 runners. Proceeds and d..

The Cougar Mountain Trail Run is held at King County’s Cougar Mountain Regional Wildland Park with the event center at Sky Country Trailhead in Bellevue, WA. The October race is part of the Cougar Mountain Trail Run Series, organized by Seattle Running Club and Northwest Trail Runs. A portion of ea..

The event takes place on Saturday, November 1, 2025, at Carkeek Park in Seattle, Washington. Distances offered: 5k 10k The run is part of the 2025-26 Winter Trail Series. The course starts and finishes in the Lower Meadow next to Piper’s Creek. The route is mostly in forest (about 85%) with a mi..

Ravenna Refresher Trail Run, held at Ravenna Park in Seattle, WA, is the second event in Northwest Trail Runs’ Winter Trail Series. Runners can choose from 4k, 8k, or 12k distances, all on the same 4.1 km loop with about 230 feet of elevation per loop. The course winds through groomed forest trails..

The Redmond Reindeer Romp takes place on December 6, 2025, at Redmond Watershed Preserve in Redmond, WA. The event is part of the 2025-26 Winter Trail Series and offers the following distances: 5-mile Half marathon Online pre-registration closes on December 4 at 11:59pm. A youth discount of $10 a..