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About the Park:

Henry’s Ridge Open Space is a 250-acre forest about three miles southeast of Maple Valley. Prior to King County’s ownership of the Henry’s Ridge Open Space, this forest was managed as industrial timber lands. King County acquired Henry's Ridge Open Space to protect natural lands from development and restore the forest's resilience against threats of disease, pests, drought, and wildfires. 

Within the forest are nearly 20 miles of multi-use trails. While all trails are for hikers and mountain bike riders, look for trail signs indicating which trails are best for a specific activity.

To become a vibrant ecosystem that offers a safe place for people to recreate, supports wildlife, provides clean air and water, former timber lands need to be actively managed. Over the next thirty years, there will be periodic forest stewardship projects at Henry's Ridge such as thinning, invasive weed removal, and plantings. King County's sustainable forest management practices at Henry's Ridge are certified by the Forest Stewardship Council® (license code FSC-C008225).


Evergreen Mountain Bike Alliance - Henry's Ridge

Northwest Natural Resource Group


Park Activities: dog walking, hiking, mountain biking, nature observation, volunteer


Location: Three miles southeast of Maple Valley, three miles north of Black Diamond 

Nearby Bus Stops: 143 and Dart Route 907 at Maple Valley-Black Diamond Rd SE & SE 280 St

Parking: There are no formal, designated parking areas. Park along the residential streets but do not block driveways


Trailhead: There are a number of informal access points from adjacent neighborhoods.



Henry's Ridge Open Space Map  

Text KING HENRY to 468311 to load the map onto your smartphone.


Park History:

See Danville Georgetown


Relevant Links


January 2018 Draft Forest Stewardship Plan 

Henry's Ridge Open Space updates: Click to subscribe to an email newsletter for updates about the parks in the Black Diamond Open Space area.