Welcome to the 2025 edition of the Cougar Mountain Trail Series. This year is the 21st running of this event. The series is put on by Seattle Running Club and Northwest Trail Runs and supports King County Parks. Since the beginning of the series, we have donated over $240,000 to King County Parks.
The July 12th Race will have two distances: 10.8 and 19.5 miles.
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Earlier Event: July 9
Honoring Harvey Manning’s 100th Birthday: A Celebration of Legacy, Community, and Conservation
Later Event: July 13
Native Plant Hike with WNPS