Cougar Mountail Trail Races:

Location: Sky Country Trailhead

Address: 7077 Clay Pit Road Bellevue WA 98006

Contact Email: events@mergeo.com

Website: Event Link

Date: Saturday October 31, 2026

Just 15 minutes from Seattle, King County’s Cougar Mountain Regional Wildland Park, is a trail running paradise thanks to its rolling and runnable hills and trail variety ranging from narrow and technical to wide and groomed. Run through lush forest, fern-lined single-track, over hills and along marshes, just minutes from the city. Halloween costumes optional. Race options include a 5k, 7.6-mi, 19.5-mi, and 50k.