Carkeek Cooler Trail Run

Seattle, United States • 1 Nov 2025

Carkeek Cooler Trail Run

The event takes place on Saturday, November 1, 2025, at Carkeek Park in Seattle, Washington. Distances offered:

  • 5k
  • 10k

The run is part of the 2025-26 Winter Trail Series.

Course and aid

The course starts and finishes in the Lower Meadow next to Piper’s Creek. The route is mostly in forest (about 85%) with a mix of fast, wide trail (64%) and narrower rolling trail (36%). The 5k follows the Piper’s Creek Trail with a gradual then steeper climb, a traverse on South Ridge Trail, a descent via Clay Pit and Hillside Trails to the finish. The 10k is two loops of the 5k course. Measured distances and climb: 5k (3.1 miles) with about 480 feet gain; 10k (6.2 miles) with about 960 feet gain. Distance was measured with a measuring wheel; climb was estimated from contour maps.

The aid station is at the start/finish and serves as the halfway aid point for 10k runners. It supplies water, electrolyte drink, and a selection of carbohydrate-rich or salty foods.

Registration, series details and safety

Online pre-registration closes October 30. Entry pricing varies by registration period. Runners under 20 receive a $10 discount on online pre-registration or event-day prices. Participants who complete four or more Winter Trail Series events earn a pair of limited-edition series socks. Series standings use each runner’s best four performances; at least three scores are required for awards. Awards are given across Female, Open, Masters, Junior, and Youth categories.

Trails remain open to other users and cyclists during the event. Dogs are not allowed on course under applicable policies. Participants are responsible for their own safety and should call 9-1-1 in an emergency. Visit the organization's website for the most recent information.

Race information

10 km
960 m+
10k
5 km
480 m+
Visit the organization's website for the most recent information.
Trail runs nearby

Celebrate Day of the Dead on Nov 1 with a spooky scavenger trail run through historic Port Gamble. Run a photo scavenger trail of about seven miles and stay for an optional ghost tour that explores the town's eerie history.

Celebrate the Evergreen trail season finale at Grand Ridge Regional Park with scenic, technical courses from 5 mile to 50K. Tough climbs, lively aid stations and handmade solar powered finisher swag await.

Join the Ravenna Refresher Trail Run at Ravenna Park in Seattle on November 15, 2025 for 4k 8k or 12k on scenic forested loops through a ravine. Gentle climbs on a 4.1 km loop and a fun winter trail series vibe welcome all abilities.

Join the Celebrate Veterans 5K in Tacoma on Nov 16, 2025 to honor military service and those missing in action. Run the first official event on the new Orange Gate and Pipe Trail and enjoy a chip timed race with a patriotic headband and med..

Event overview The Redmond Reindeer Romp takes place on December 6, 2025, at Redmond Watershed Preserve in Redmond, WA. The event is part of the 2025-26 Winter Trail Series and offers the following distances: 5-mile Half marathon Online p..

Pigtails Run in Maple Valley on Dec 13, 2025 offers 50K, marathon and half on scenic mixed trail with gravel and crushed rock. This low cost Fat Ass event celebrates self sufficiency and welcomes finishers with pizza and medals.