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Black Diamond Open Space

Puget Sound and Islands


Puget Sound and Islands -- Seattle-Tacoma Area
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17.0 miles of trails


Highest Point: 700 ft.


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WTA worked here: 2021

Parking Pass/Entry Fee


The Black Diamond Open space consists of 1,240 forested acres including wetlands, peat bogs, streams and portions of the protected migratory corridor known as the Wildlife Habitat Network. Explore the 17 miles of non-motorized trails only two miles north of Black Diamond and six miles to the south of Maple Valley.

Rock Creek and Ravensdale Creek are two salmon-bearing streams that flow through the park. In addition to sockeye, chinook and coho salmon, mussels, cutthroat trout and beavers can also be found in these streams’ high-quality waters.


Black Diamond Open Space

Map & Directions

Co-ordinates: 47.3373, -122.0151 Open map in new window


Puget Sound and Islands -- Seattle-Tacoma Area

King County Parks

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Guidebooks & Maps

King County Parks PDF Map:

Getting There

From Seattle, drive I-90 to exit 25 for Highway 18. Turn right on Highway 18. Take exit SE 231st Street toward WA-169/Maple Valley. Turn south on SE 231st Street. Turn right onto WA-169 S / Maple Valley - Black Diamond Road SE.

In a little under half a mile, take a left onto SE 231st Street. After about 0.2 mile, take a right onto WA-169 using the right two lanes. Continue for approximately 4.5 miles and there will be a gravel parking lot on the left.

Take Transit

King County Metro Route 143 and DART Route 907 go to the SR-169 and SE 280 St stop and the Black Diamond-Ravensdale Rd SE stop nearby the park. (See for schedules and connections).

Parking Pass/Entry Fee


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Black Diamond Open Space

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