Cougar Mountain Trail Run Series #3

Newcastle, United States • 12 Jul 2025

The Cougar Mountain Trail Run Series #3 is set to take place at King County’s Cougar Mountain Regional Wildland Park in Newcastle, WA. This event features three race distances: 5k, 10.8 miles, and 19.5 miles, providing options for runners of various skill levels. The series has a strong community focus, having raised over $250,000 for King County Parks and contributing numerous hours of trail maintenance. Participants can enjoy the scenic trails, which include a mix of technical and groomed paths through lush forests. Registration is available online and on the event day, encouraging both seasoned and new runners to join. Visit the organization's website for the most recent information.

Race information

19 mi
19.5 Miles
10 mi
10.8 Miles
5 km
Visit the organization's website for the most recent information.
Trail runs nearby

Running Up For Air - Tiger Mountain is an endurance running event taking place in Issaquah, Washington, designed to raise awareness about air quality issues. Participants can choose from various challenges, including 12-hour, 6-hour, and 3-hour races, all set against the stunning backdrop of Tiger M..

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 Sn..

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 Trillium Trail Run, organized by the Bainbridge Island Parks & Trails Foundation, is a premier spring running event taking place at Battle Point Park. Participants can choose from a scenic 10K or 5K trail run, as well as a Kids Fun Run, all set amidst the beautiful wooded landscapes of Bainbridg..

The Dirty Turtle 25/50K is a challenging trail running event scheduled for May 17, 2025, at Green Mountain Horse Camp in Bremerton, WA. The course features 75% singletrack trails and 25% dirt/gravel roads, with 50K runners facing 7,000-8,000 feet of elevation gain on rugged terrain. Both distances o..