
Super Pump Rebuilt at Black Diamond Open Space
Super Pump is one of our older trails at Black Diamond Open Space (BDOS) that we rebuilt last fall, marking the final β¦
Home / Trails
850+ miles built, maintained, and protected. Trail projects, sawyer crews, advocacy, and contracting β driven by community. Powered by Riders.
01 / Two Halves, One Mission
Evergreen Mountain Bike Alliance is two organizations working as one. We're a 501(c)(3) nonprofit built on advocacy, education, and volunteer stewardship β and we're a licensed, bonded Washington general contractor held to the same permitting, insurance, and safety standards as any commercial builder. Together, the impact is greater than the sum of our parts.
501(c)(3) Non-Profit
Licensed Contractor
02 / Licensed & Bonded
Evergreen's trail work is guided by 30+ dedicated trail staff β a team credentialed as a licensed Washington general contractor (#EVERGMB837P4), carrying $5,000,000 in liability coverage, and fluent in NEPA/SEPA permitting. Our safety record (.6463 xMod/EMR) runs well ahead of industry average.
This same professional crew directs contracted work for cities, parks departments, land trusts, and private landowners (like Snoqualmie Bike Park) β from feasibility study to long-term stewardship.
Explore Professional Trail Services β03 / Built by Volunteers

Every year, Trail Volunteers β mountain bikers just like you β donate over 29,000 hours of hands-on labor across all ten chapters. Trails don't maintain themselves, and without this volunteer force, Washington's singletrack would slowly erode into overgrown brush and washed-out ruts. No experience is required to start; every volunteer work party has a crew lead ready to teach you on the spot.
If you ride Washington trails, you've got sweat equity in them. Every berm, root feature, and switchback you love was built β and is kept rideable β by volunteers who showed up. Put in your hours at a volunteer work party, and you're not just helping out: you're paying forward the trails you ride every weekend.
Become a Trail Volunteer β04 / The People Behind It
Every volunteer work party is led by a highly qualified crew lead who guides the work, ensures site safety, and teaches best practices to keep WA trails riding well. They are the throughline between our mission and our professional services.
Meet our professional builders who keep Evergreen's trails fun and sustainable.
Meet the team β05 / What's Being Built
From reroutes to entire new networks, here's a look at what's in progress right now across Washington.
06 / See Something? Say Something
Found a downed tree, a washed-out corner, or something else that needs attention? Flag it on your local chapter's Facebook group or log it directly on TrailForks β both are monitored by our sawyer and maintenance crews.
Report an issue β07 / Trail Work Stories

Super Pump is one of our older trails at Black Diamond Open Space (BDOS) that we rebuilt last fall, marking the final β¦

Trail building costs $60β80K per mile. See why that makes Evergreen’s spring campaign β and your gift before April β¦

Evergreen is powered by its community. Every year, hundreds of volunteers show up across Washington to help us build and β¦
Every Evergreen member funds the trails, the advocacy, and the community that makes Washington the best place to ride.
Join Evergreen today