Join us to celebrate new trails and trailhead at Black Diamond Open Space, Sept 28

Black Diamond Open Space
Trailhead Dedication

Join King County Parks as we celebrate expanded access to this popular park and recognize the partners who made it possible!

What: Trailhead Dedication and Trail Ride

When: Wednesday, Sept 28 - Program begins at 4 pm; trail ride departs immediately following ceremony.

Where: Main parking lot. SE Maple Valley Highway (SR 169), just south of SE 288th St and north of the community of Black Diamond (map)

Getting there: From I-405, take the exit for SR-169, SE Maple Valley Highway. Follow SR-169 for approximately 16 miles, just south of Maple Valley. The entrance to the main parking lot is on the left as you head south.

King County Parks is delighted to celebrate the completion of the trailhead and parking lots, as well as the development of a new mountain bike trail network at Black Diamond Open Space. Evergreen Mountain Bike Alliance and volunteers contributed more than 2,000 hours of hard work to build and improve nearly eight miles of trails with the support of a $10,000 grant from REI. This work was funded in part through King County Parks' Youth Sports Facilities Grants Program and the Community Partnerships and Grants Program, and the parking lots were made possible by the voter-approved 2014-2019 King County Parks, Trails and Open Space Replacement Levy. Thank you for your support! Celebrate this great milestone, and join Evergreen and King County Parks for a guided casual ride around the new trails after the dedication ceremony. Don't forget your bike!