Cougar Mountain Trail Run Series (June)

Cougar Mountain Trail Run Series (June)

Welcome to the 2026 edition of the Cougar Mountain Trail Run Series, put on by Seattle Running Club and Northwest Trail Runs. Our events support King County Parks, with $15 of every entry going to KC Parks.

The series features multiple races throughout the year, with the June 13th event including the 5K, 8.2 Miles, and 14.5 Miles races. The event supports King County Parks, with $15 of every entry donated.

Events Schedule:

• May 9: 5.1 Miles & 10.8 Miles (9 AM start)
• June 13: 5K, 8.2 Miles & 14.5 Miles (9 AM start)
• July 11: 5K, 10.8 Miles & 19.5 Miles (9 AM start)
• August 8: 5K, 14.5 Miles & 26.2 Miles (8:30 AM start for longer races, 9 AM for 5K)
• October 24: 5K, 7.6 Mile Cross Country, 19.5 Miles & 50K (8 AM start for longer races, 9 AM for others)

Series Options:

• Short Series: May 5.1 Miles, June 8.2 Miles, July 10.8 Miles & August 14.5 Miles
• Long Series: May 10.8 Miles, June 14.5 Miles, July 19.5 Miles, August 26.2 Miles

Top overall runners in each category receive awards. Online registration closes the Wednesday before each event. Day-of registration may be available.

Location: Sky Country Trailhead, Bellevue, WA 98006

Organizer: Seattle Running Club and Northwest Trail Runs