Trail Running calendar near Sammamish 2024-2025

We have found 54 Trailruns within 80 miles of Sammamish. See below where and when you can find the races.

The Olympic Mountains Trail Races, organized by Mountain Peaks Racing, will take place on August 16-17, 2025, in the stunning Olympic National Forest, Washington. This event features three challenging race distances: a 100K, 50K, and 25K, each offering breathtaking views and significant elevation ga..

Twilight at the Bay is an exciting running event taking place at Chambers Bay in University Place, Washington. Participants can choose from three race distances: a half marathon, a 10k, and a 5k, each offering a unique experience along a beautifully paved loop trail. The course features a mix of fla..

September 2025

The Dark Divide Trail Races, hosted by Wonderland Running, will take place from September 5 to 7, 2025, at the Cispus Learning Center in Randle, WA. This challenging event features multiple race distances, including a 100 Miler, 50 Miler, 50K, and a 15 Mile Fun Run, all set in the stunning and rugge..

The Goat Rocks 50 Miles 2 Day Stage Run is an exhilarating trail running event set in the stunning Goat Rocks Wilderness, located between Mt. Rainier and Mt. Adams.This challenging adventure is designed for experienced runners, featuring rugged terrain, narrow ridgelines, and breathtaking views of a..

The GOAT Run, taking place in Port Angeles, WA, is an exciting trail running event featuring a half marathon, marathon, and 50K race. Set against the stunning backdrop of Olympic National Park, participants will traverse the scenic Olympic Adventure Trail, culminating at the breathtaking Lake Cresce..

The Brown Bear Salmon Run is an exciting running event taking place at Snoqualmie Pass, Washington, on September 13, 2025. This race features a scenic 15K course that showcases the beautiful terrain of the area, known for its winter skiing and summer recreational activities. Participants can expect ..

The Plain Endurance Runs is a challenging running event held in the scenic Cascade mountains of Washington, featuring a 100-mile and a 100K race. Participants navigate approximately 85 miles of trails and 20 miles of forest service roads, with a total elevation gain/loss of around 21,000 feet. This ..

The Cirque Series - Crystal Mountain is an exciting running event set for September 20, 2025, featuring a challenging 7.7-mile course with an elevation gain of 2,544 feet. Starting at the Crystal Mountain base area, participants will navigate rugged terrain, including the Kelly’s Gap service road an..

Ultra Fest is an exciting running event taking place in Easton, WA, featuring multiple ultra-distance races including 100M, 100K, 50M, and 50K. Set against the stunning backdrop of the Central Cascade Mountains, participants can expect a fast and mostly flat course, making it ideal for both first-ti..

The Fidalgo Trail Run is a scenic running event held at Deception Pass State Park in Anacortes, Washington. Participants can choose from three distances: a 5-mile run, a half marathon, or a full marathon, all starting and finishing at Bowman Bay. The course features beautiful views of Puget Sound an..

October 2025

The North Bend Trail Fest, scheduled for October 11-12, 2025, is a vibrant celebration of outdoor sports in the Snoqualmie Valley, featuring a variety of mountain running events. Participants can challenge themselves in the Mt Si VK, North Bend Skyline 30k, and Little Si 10k, each offering unique co..

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. This challenging race offers participants a chance to push their limits while enjoying breathtaking views of the Snoqualmie Valley and..

UTMB Index

The Carkeek 12 Hour is a challenging running event taking place in Seattle, WA, on October 25, 2025. Participants can choose to run for either 12 hours or 6 hours on a scenic 1.93-mile loop, known for its elevation gain and unpredictable weather. The event embraces a fun, Halloween-themed atmosphere..

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..