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Cougar Mountain Trail Run Series #4

August 12, 2023

This is the fourth race in this classic trail running series, with a Short Series 14-mile race, and a Long Series 26.2-mile race, as well as a fast 5k. 8:30am start.

This event is co-sponsored by Seattle Running Club and Northwest Trail Runs, and it features clearly-marked courses, well-stocked aid stations, and friendly staff.

Thanks to runners like you, this series has raised over $170,000 for King County Parks and contributed many hundreds of hours of trail work. Join Seattle Running Club and Northwest Trail Runs in carrying this legacy forward and making this series bigger and better than ever!

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.


August 12, 2023
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Newcastle, Washington
Newcastle, WA 98056 United States


Northwest Trail Runs
View Organizer Website


Event Distance
5K, Half Marathon, Marathon
Pacific Northwest