Cougar Mountain Trail Run

Bellevue, United States • 25 Oct 2025

The Cougar Mountain Trail Run is an annual trail running event held at King County’s Cougar Mountain Regional Wildland Park in Newcastle, Washington, just 15 minutes from Seattle. The race offers multiple distances including 5k, 7.6 miles, 19.5 miles, and 50 kilometers, catering to a range of trail runners. The course features rolling hills, lush forests, fern-lined single-track trails, and marsh views, with elevation gains varying from 350 feet for the 5k to 7,200 feet for the 50k. The event supports King County Parks through entry fees and promotes trail conservation, making it a popular and scenic race for trail enthusiasts. Visit the organization's website for the most recent information.

Race information

50 km
7200 m+
50-K
19 mi
3700 m+
19.5-Mi
7 mi
1150 m+
7.6-Mi
5 km
350 m+
Visit the organization's website for the most recent information.
Trail runs nearby

Ravenna Run the Ravine is a trail running event held in Ravenna Park, Seattle, WA, featuring 4k, 8k, and 12k distances. Nestled in a forested ravine near the University District, the course offers a scenic, gently sloping 4.1 km loop with low to moderate climbs through groomed trails. The event is p..

The Soaring Eagle Trail Run, held in Sammamish, Washington, offers runners a scenic experience on over 10 miles of trails within Soaring Eagle Regional Park. The race features three distances: 5K, 10K, and a half marathon, with the half marathon consisting of two laps of the 10K course. The course i..

The Lake Tye Challenge is an ultramarathon held in Monroe, Washington, featuring 12-hour, 6-hour, and 3-hour timed races on a 1.75-mile loop trail around Lake Tye. Participants run as many laps as possible within their chosen time frame, with results based on total completed laps. The flat, clockwis..

The We Out Here Trail Festival is a welcoming trail running event held at St. Edwards State Park in Kenmore, Washington, on June 7, 2025. Designed especially for first-time trail runners, the festival offers looped courses of approximately 1.9, 3.8, and 5.7 miles, as well as a two-hour timed option...

The Vashon Island Ultramarathon & Trail Run, held on Vashon Island, Washington, offers three race distances: 50K, 20 miles, and 10 miles. The event features a rolling course primarily on single and double track trails within the Island Center Forest’s Gateway Trail system, including some dirt roads..

The Rainier to Ruston Relay is a scenic and historic running relay event held annually in Tacoma, Washington, celebrating National Trails Day. Teams of 2 to 6 runners cover approximately 50 miles from near Mount Rainier's Carbon River entrance to the waterfront of Tacoma's Ruston Way. The course fol..