Cougar Mountain Trail Run Series (August)

Sky Country Trailhead
Bellevue, WA 98006

Running > 5k, Marathon, Obstacle Race

Registration Powered by RunSignUp

Event Description

Welcome to the 2023 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 a portion of every entry going to KC Parks. 


May 13: 5.1 Miles & 10.8 Miles
June 10: 5K, 8.2 Miles & 14.5 Miles
July 8: 5K, 10.8 Miles & 19.5 Miles
August 12: 5K, 14.5 Miles & 26.2 Miles
October 29: 5K, 7.6 Mile Cross Country, 19.5 Miles & 50K

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

Online registration closes at 11:59 PM PDT the Wednesday before each event. We will have day-of registration if you did not register in time.

Reasons to Sign Up
1) Well-marked trails with distances that are perfect for all experience levels
2) Community: Surround yourself with members of the trail-running community
3) Post-race food and libations, including beer provided by one of our Club's partner stores, Flying Lion Brewery
4) Raise money for King County Parks: $15/runner donated to the parks

Safety Guidelines
If you have had COVID-19 symptoms in the last 10 days or have known exposure to someone with COVID-19, please skip this race.

We Run on Native Land
We acknowledge that our running opportunities are built on the purposeful removal of Native peoples, who have been the stewards of Seattle-area lands for thousands of years. Thus, we accept our ethical responsibility for the ongoing stewardship of the land and purposeful support of Native neighbors, colleagues, businesses, and tribes. The Muckleshoot, Duwamish, Stillaguamish, Snoqualmie, and Coast Salish are the Natives of the lands we run on.

Photo Consent
I understand and accept that photos/videos/illustrations may be taken of me and/or my personal property while attending/participating in Seattle Running Club (SRC) events/functions. I acknowledge and agree that such photographs or other illustrations may be used by SRC and its related entities for advertising and promotional purposes in any medium, without compensation to me. If you would prefer not to have a particular photo used, let us know and we’ll do our best to remove it right away.

A Greener Event: Cup Free

Again, this year the series is continuing to reduce the amount of trash created during the event. We ask that runners bring a refillable water container with them on the trail to use at aid stations along the way. Our friends at Shoes-n-Feet, Seven Hills Running, and Fleet Feet Sports Seattle (Capitol Hill and Ballard) have a variety of hydration products.

Race Information

Thanks to runners like you, the Cougar Mountain Trail Run Series has raised over $180,000 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 14th annual event bigger and better than ever!

Just 15 minutes from Seattle, King County's Cougar Mountain Regional Wildland Park is one of the most popular training grounds for area trail runners and the Seattle Running Club. The course builds on itself throughout the series and brings runners through a lush forest of fern-lined single-track trails, over hills and along marshes and wetland habitats. This is a great series to supplement the training regime for a fall marathon or ultra. Cougar Mountain features rolling hills, a few moderate climbs and a few steep but short inclines.

The summer Short Series and Long Series races are held the 2nd Saturday of May, June, July, and August. The Fall races are held on the last Sunday in October. Series standings are updated after each month's races and everyone competing in each successive distance is eligible for Series awards. There is a participant cap and the races tend to sell out, so register early! There are NO REFUNDS!

Seattle Running Club Discount
If you are a member of Seattle Running Club, you should have received a discount code for 20% in the newsletter. You will need to provide your member number if you use this discount code. There are also many other discounts and benefits for being a member of the Seattle Running Club. 

No Dogs
As much as we love our four-legged friends and family members, we are not allowed to have dogs at our event.

Very important announcement: Dogs are not allowed on the course due to USATF Sanctioning and Insurance Requirements. Despite the park's policy on dogs on leashes being acceptable, USATF has determined dogs on course cause a potentially unsafe environment for participants and spectators. We love our dogs and remember Scott's dog Jack attending Cougar races for years and years. But we want to continue hosting races for years to come and need to abide by the USATF rules.

The top 3 Men, Women, and Nonbinary Runners in each event will receive a podium prize. 
Our August 14.5-Mile Race will serve as the USATF PNTF championships. There will be prize money for this event. Prize money will be announced as we get closer to this event.
Our October 7.6-Mile Cross Country event is open to individuals and teams. There will be a special award (the Cougar Mountain Cup) awarded to the winning team. Rules for this event will be the same as the inaugural Cougar Mountain Cup. This is a mixed-team event and 2 women must score for each team. Teams can consist of 4-6 people with 4 people scoring and 2 displacing. 


Event Location & Accomodations

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