Mt Si Trail Run

Snoqualmie, United States • 4 May 2025

The Mt Si Relay & Trail Runs is a popular running event taking place on May 4, 2025, in Snoqualmie, WA. This event features various race distances, including a 50-mile ultra, 50K, marathon, and half marathon, catering to both novice and experienced runners. The course primarily follows the scenic Snoqualmie Valley Trail and John Wayne Pioneer Trail, offering beautiful views of the Cascade foothills and rivers. Additionally, the relay option allows teams of five to participate, making it accessible for first-timers and seasoned runners alike. The event emphasizes community and support, with numerous aid stations along the routes. Visit the organization's website for the most recent information.

Race information

50 mi
50-Miler
50 km
50k
26 mi
Marathon
13 mi
Half Marathon
Visit the organization's website for the most recent information.
Trail runs nearby

The Tiger Claw is a challenging trail running event held in Issaquah, Washington, on May 9-10, 2025. It features multiple race options, including the 50k, the Ascent, and the Big Cat, with the latter combining both the ascent and 50k races. The course traverses rugged Pacific Northwest terrain on Ti..

The Cougar Mountain Trail Run Series, organized by the Seattle Running Club and Northwest Trail Runs, features a variety of trail running events in King County's Cougar Mountain Regional Wildland Park. Scheduled for May 10, 2025, participants can choose between a 5.1-mile and a 10.8-mile race. This..

The Freedom 50 is an annual ultramarathon event featuring both 50-mile and 50k races, set to take place on May 24, 2025, in Puyallup, Washington. The race starts and finishes at Diamond Detail and follows the scenic Foothills Trail, offering a mostly paved course with minimal elevation changes. Aid..

The Leavenworth Skyline 27k will take place in North Bend on Saturday 24 May 2025. You can run 27 kilometers.

UTMB Index

The Pigtails Challenge is a multi-distance ultramarathon held at Lake Youngs Watershed in Renton, Washington, over the weekend of May 24-25, 2025. Participants can choose from various events, including 50K, 100K, 100-mile, 150-mile, and 200-mile races. The course features a 9.4-mile loop with 900 fe..

The Sri Chinmoy 13-Hour Ultra is a timed endurance race held in Seattle, Washington, featuring a 1.54-mile loop course with scenic views of Lake Washington and the surrounding woods. Participants can compete solo or as part of relay teams in various race durations, including 3, 7, and 13 hours. The..