Challenging, original, and beautiful trail races in the Pacific Northwest.

Our first race
Hyak Passage 25K
October 2026. A 25K through Snoqualmie Tunnel and Annette Lake, with 1,800 feet of gain and enough time to take the day as it comes.
View race details →We organize and direct professional trail racing events in the Pacific Northwest.
Our courses are built around the landscapes that inspire us. Every race is shaped by the place it moves through and the community that shows up to run it.
We care about competition. We also care about who gets to be here. Access is part of how we operate, not something we add on later. Generous time limits, funding for underrepresented runners, and a culture built on the idea that the trails belong to everyone.
About Cielo →The community behind Cielo Running.



Hyak Passage 2025 photos on this page by Somer Runner.
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