Carkeek 12 Hour (Virtual)

Virtual Options Available

The virtual event is scheduled for October 1-31, 2026. There is also a separate registration page for an in-person option October 24 in Seattle at Carkeek Park.

Epic Loops

The original Carkeek and Cottontail races take place on a 1.93-mile loop with 436' gain per loop. The runner with the virtual run most closely mirroring the original Carkeek loop will win a special prize.

Affordable Fundraiser for Northwest Trails

The 6-Hour AND 12-Hour virtual events are priced at $35. Nearly all registration fees go back to trail work and advocacy through the 501(c)3 nonprofit Endless Trails. Additional tax-deductible donations can be made during registration.

Run Club Competition

New in 2026, a series-wide run club competition will be added. Run club members can register their club, and their miles will count towards the club's total. A trophy will be awarded at year's end.

Contact: allthetrails[at]gmail[dot]com

Social Media: Endless Trails on Facebook, @endless_trails on Twitter & Instagram.

Prices include US sales tax and UltraSignup fees. All registrations are non-refundable and non-transferable.