IN-PERSON & VIRTUAL OPTIONS

The virtual event is scheduled for October 1-31, 2025. There is also a separate registration page for an in-person option October 25 in Seattle at Carkeek Park: Check the linked Endless Trails events for that registration page.

Race registration fee notice

Please note: While the registration button displays the all-in price, including fees, you'll see these fees removed during checkout. Our race director has generously opted to cover all processing fees for participants.

GO GO GADGET EPIC LOOPS

The original Carkeek and Cottontail races take place on a 1.93-mile loop with 436' gain per loop, making for a rather tough challenge. Can you top it? The runner with the virtual run most closely mirroring the original Carkeek loop will win a special prize.

AN AFFORDABLE FUNDRAISER FOR NORTHWEST TRAILS

We pride ourselves on keeping these races affordable. And nearly all of your registration goes back to trail work and advocacy! The 6-Hour AND 12-Hour is but a budget-friendly $35 (including all applicable sales tax & UltraSignup processing fees), with zero price increases.

This race, like other Endless Trails events is a FUNdraiser, so any and all funds that don't go to race-related costs will go to our 501(c)3 nonprofit to support trail work, trail education, and trail advocacy throughout the Northwest region. You'll also have the option to make an additional tax-deductible donation to Endless Trails as you're registering. Every little bit helps, and all of it goes back to good and much-needed work on local and beloved Northwest trails. Thanks for your support! #RunningForTrails

QUESTIONS?

Check the Carkeek race page (linked above) to see if it might already be answered there. If it's not, feel free to shoot us an email at allthetrails[at]gmail[dot]com. We're active on social media, too: You can find Endless Trails on Bookface, and we're @endless_trails on both Twitter & Instagram.

*Prices include US sales tax and UltraSignup fees. All registrations are non-refundable and non-transferable to other events. All donations go to Endless Trails, a registered 501(c)3 nonprofit for trails.*

Event's current local time: 3:51 AM PT