Cougar Mountain Trail Run Series
Bellevue, United States • 13 Jun 2026
Cougar Mountain Trail Run Series (June)
The Cougar Mountain Trail Run Series held in June is part of a long-standing event series organized by the Seattle Running Club and Northwest Trail Runs. Located at the Sky Country Trailhead in Bellevue, Washington, the event takes place in the Cougar Mountain Regional Wildland Park. The park features a landscape of lush forests, fern-lined single-track trails, marshes, and wetland habitats.
Participants can choose from several distance options during the June event:
- 5K
- 8.2 Miles
- 14.5 Miles
The courses consist of rolling hills, moderate climbs, and brief steep inclines. This event is cup-free to reduce waste, and runners are required to bring their own refillable water containers for use at aid stations. Post-race food and beverages are provided for participants.
The June races also serve as the second installment of two larger series: the Short Series and the Long Series. These series track performance across multiple months, with awards available for the top overall male, female, and non-binary runners based on cumulative times from their best three out of four races.
The event supports local environmental maintenance, with a portion of every entry fee donated to King County Parks. Due to insurance requirements, dogs are not permitted on the course. Visit the organization's website for the most recent information.