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Henry's Ridge

Henrys Ridge retaining pond

Key Info

1-2-3 of 5 (technical difficulty)
2 of 5 (physical difficulty)
NW Washington


14 miles total
250' elevation gain
95% single track
5% fire road
47.35673422 lat.
-121.9981956 long.


Overview: Trail system being developed in cooperation with King County Parks. Similiar to Lake Sawyer system with somewhat more climbing/descending. Good drainage soils and tree cover. Currently about eight plus miles of trails plus new trails being built by Black Diamond Trail Coalition in conjunction with Evergreen Mountain Bike Alliance.

  • Site Name: Official KC name is “Maple Ridge Highlands Open Space”. Some call it Maplewood’s. The neighbors call it “Henry’s Ridge”.
  • Site management: This is a 4 to 1 set aside area. This means a developer had to put 4 acres into KC owned open space for ever 1 acre that was developed. The property is owned by KC Natural Resources and managed by KC Parks and Recreation.
  • Size: This is actualy an unknown at this time. We have heard various acreage, 260 acres and 305 acres and 377 acres.
  • Constraints: As an open area, the improvements on this site can take up no more than 5% of the total area. This includes trails, parking, storage, etc. We should plan on using no more than 4% of the site for trails to allow for parking, access roads, etc. Existing access roads may push the available portion of the site down to 3%.
  • Narrow (singletrack) trails are considered to have a 6’ wide impact. 1 acre = 43,560 sq. ft. 1 mile of singletrack with a 6’ impact area = 31,680 sq. ft. Using 260 acres at 4% usage, as an example, we could build 14.3 miles of trail.

The project has broad community and King County staff support. King County staff has expressed praise of the trail construction done to this point.

The area is open space set aside from a housing development. Designated for mountain biking and foot traffic.

  • Black Diamond Bakery - Restaurant & bakery.
  • 4 Corners has: Safeway, Fred Myers
  • Best local Coffee: Ristrettos Coffee & Wine
  • Best local Mexican food: Hacienda Del Mar
  • Best local Mexican food truck: Lonchera la Esperanza (22245 dr 272nd St, Maple Valley, WA)
  • Best local craft beer: Imbibe Bottle House and Tap Room
  • Local Bike Shop: Bike Master and Boards (Great people and very knowledgeable)