Trail Running calendar near Sammamish 2024-2025

We have found 43 Trailruns within 80 miles of Sammamish. See below where and when you can find the races.

The Woolley Trail Runs is an exciting running event held in Sedro-Woolley, WA, featuring three distances: a half marathon, a marathon, and a 50k. The courses are primarily out-and-back routes along the scenic Cascade Trail, with a few road crossings. Participants can expect limited aid stations and ..

The Fort Ebey Kettles Trail Run is a scenic running event held at Fort Ebey State Park on Whidbey Island, featuring well-marked courses of 5k, 10k, Half Marathon, and Marathon distances. Participants will enjoy breathtaking views of the Olympic Mountains and the Strait of Juan de Fuca while navigati..

March 2025

Dizzy Daze is an endurance running event held at Green Lake Park in Seattle, WA. Participants can choose between a 12-hour or a 5-hour race, running on a scenic 3.2-mile loop around the lake. Runners travel counter-clockwise on a groomed dirt path, aiming to complete as many laps as possible within ..

April 2025

The Twilight 12 Hour is a unique night running event held at Flying Horseshoe Ranch in Cle Elum, WA. Originating from a casual night run in Utah, this event invites participants to run a scenic 2.3-mile loop under the stars for 12 hours. It emphasizes community and fun rather than competition, allow..

May 2025

The Trillium Trail Run, organized by the Bainbridge Island Parks & Trails Foundation, is a premier spring running event featuring a 10K, 5K, and Fun Run. Set in the scenic Battle Point Park, participants will enjoy a beautiful course that winds through wooded areas and along the Forest to Sky Trail...

The Dirty Turtle 25/50K is a challenging trail running event set to take place on May 17, 2025. The course features a mix of 75% singletrack and 25% dirt/gravel service roads, with significant elevation gains of 7,000 to 8,000 feet for the 50K runners. Participants can also opt for a rucking divisio..

Leavenworth Trail Fest is an exciting running event taking place in Leavenworth, Washington, featuring multiple race distances including the Ski Hill 55k, Skyline 27k, and The Town 5k. Set against the stunning backdrop of the Cascade Mountains, participants can enjoy scenic trails and a vibrant fest..

The Pigtails Challenge is an endurance running event held at Lake Youngs Watershed, featuring a rolling loop course with 900 feet of elevation gain per loop. Participants can choose from various distances, including 200 miles, 150 miles, 100 miles, 100 kilometers, and 50 kilometers. This event is de..

June 2025

The Rainier to Ruston Relay is an exciting running event that takes place in Tacoma, Washington, where teams of 2 to 6 runners traverse a scenic 50-mile course from the base of Mount Rainier to the waterfront of Tacoma. Participants enjoy a mix of paved trails, roads, and rough paths while celebrati..

The Super Marathon & Half Marathon, taking place in Snoqualmie Pass, WA, is recognized as one of the fastest marathon courses in the country. The event features a scenic 26.2-mile marathon and a 13.1-mile half marathon, both offering breathtaking views of the Cascade Mountains and Keechelus Lake. Th..

The Yeti 100 Mile Endurance Run in Washington is an exciting trail running event taking place on June 27-28, 2025, along the scenic Palouse to Cascades trail. This race features three distances: 100 miles, 100K, and 50 miles, making it suitable for both first-time ultra runners and seasoned athletes..

The SISU 24 Ultra PNW is an exhilarating 24-hour running event set in the stunning Cascade Mountains near Mount Rainier National Park. Participants can choose between a solo or team adventure, tackling various trails to earn points based on their route choices and challenges. The event features a 10..

July 2025

The Kill Bill’s Oyster Dome Challenge is a unique running event held in Blanchard Mountain, WA, featuring two race distances: 25k and 50k. Named after the challenging ascent known as Kill Bill Hill, the course offers participants a scenic trek through the British Army Trail and the Alternate Incline..

The Mount Rainier Half Marathon & Trail Events, taking place in Ashford, WA, offers a stunning running experience amidst the breathtaking landscapes of the Cascade Range. Scheduled for July 18-19, 2025, the event features a variety of races, including a half marathon, 5K, and several double and trip..

Cascade Crest is a renowned 100-mile trail running event held in Easton, WA, known for its challenging terrain and scenic beauty. Participants will experience over 23,000 feet of elevation gain, including a portion on the Pacific Crest Trail and a unique run through the 2.3-mile Snoqualmie Tunnel. T..

The Wonderland Circumnavigation is a challenging 95-mile running event that takes place over three days in the stunning Mt. Rainier National Park, Washington. Participants will experience diverse ecosystems, breathtaking views, and significant elevation changes, with a total elevation gain of 23,810..

August 2025

The Beast of Big Creek is a thrilling mountain running event set in the stunning Olympic Mountains, specifically at Mount Ellinor. Celebrating its 15th anniversary, the race offers two challenging distances: a 14-mile Skyrace with over 5,200 feet of elevation gain and a 5-mile Forest Loop. Participa..

The Olympic Mountains Trail Races, organized by Mountain Peaks Racing, will take place on August 16 and 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 elevatio..

September 2025

The Goat Rocks Stage is a thrilling 50-mile, two-day running event set in the stunning Goat Rocks Wilderness, nestled between Mt. Rainier and Mt. Adams.This adventure is designed for experienced runners eager to tackle high mileage and significant elevation gain on rugged terrain. Participants enjoy..

The Dark Divide Trail Races, hosted by Wonderland Running, will take place from September 5-7, 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 rugged l..