Saturday, October 25

Cougar Mountain Trail Run Series (october)

Experience the thrill of the Cougar Mountain Trail Run Series in Bellevue, King County, on October 25, 2025. Choose from a variety of race distances, including a 5K, 7.6-mile cross country race, a challenging 19.5-mile run, and a 50K ultra, all set amidst the stunning trails of Cougar Mountain Regional Wildland Park, just 15 minutes from Seattle. Embrace the Halloween spirit by dressing up in your best costumes for a chance to win awards while supporting King County Parks. Starting at 8 AM for longer distances and 9 AM for shorter races, this event promises not just a race but a celebration of creativity and community. Join fellow trail running enthusiasts for post-race festivities, food, and beverages, and contribute to the maintenance of these beautiful trails. Don't miss this opportunity to challenge yourself, connect with a vibrant community, and enjoy the beauty of the outdoors.