Join the Cougar Mountain Trail Run Series, organized by Seattle Running Club. Each entry supports King County Parks. The courses venture through lush forests and scenic trails, suitable for varying experience levels, helping raise funds for park maintenance. Participants experience well-marked trails, community atmosphere, and post-race refreshments. Continuing its eco-friendly tradition, the event is cup-free. With historical roots on native lands, the series ensures respect for its enduring legacy. Enjoy competitive and casual running opportunities, awards, and community engagement while supporting local land and environmental stewardship. Note for members: take advantage of special discounts and membership benefits.