Trail Running calendar near Renton 2025-2026

We have found 68 Trailruns within 80 miles of Renton. See below where and when you can find the races.

The Mad Meadows 50 is an exciting trail running event scheduled for October 11, 2025, in Leavenworth, Washington. Participants can choose between two challenging distances: a 50-mile and a 50-kilometer race. The course features a mix of smooth single track, steep climbs, and technical sections, all ..

The North Bend Skyline 30K is a premier trail running event that is part of the Vert Running Series Championship, designed for elite, sport, and masters 45+ runners. Set against the stunning backdrop of the Snoqualmie Valley and Cascade Mountains, this challenging course promises to test participant..

UTMB Index

The West Seattle Monster Dash is an annual running event that features a costumed 5K trail run/walk and a Kids Monster Dash. Scheduled for October 25, 2025, the event encourages participants to dress up in costumes, making it a fun and festive occasion. Registration includes a t-shirt and a bib with..

The Carkeek 12 Hour is a challenging running event held in Seattle, WA, known for its tough terrain and unpredictable weather. Participants can choose to run for either 12 hours or 6 hours on a 1.93-mile loop, with the option of a shorter loop for those seeking an extra challenge. The event, taking ..

Salt Creek 24 is a unique running event held at the scenic Salt Creek Recreation Area in Port Angeles, Washington. Participants can choose between a 24-hour race, where they can run or walk a 1.3-mile loop, or the challenging Last Runner Standing event, which involves summiting Striped Peak every ho..

November 2025

The Grand Ridge Trail Run is the concluding event of the Evergreen trail-running season, offering a variety of distances to accommodate all participants, including a 5-mile run, half-marathon, full marathon, and 50K. Set in the scenic Grand Ridge Park, the race features well-maintained trails develo..

December 2025

Saturnalia is a festive running event held at Squaxin Park in Olympia, WA, celebrating the winter season with a fun and challenging 10K trail run. Participants can enjoy the unique experience of running through winter trails, embracing the darkness and diverse weather conditions. This event is desig..

The 2025 Pigtails Run, celebrating its 20th anniversary, is a unique running event known as "The Luxury Fat Ass." Set in Maple Valley, Washington, this race offers participants a choice of distances, including a 50K, marathon, and half marathon. Emphasizing camaraderie and self-sufficiency, the even..