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News & Updates

Big Tree Ridge Trailhead

Big Tree Ridge Trailhead, on the east side of Cougar Mountain Regional Wildland Park, will be closed to parking until the trailhead project is complete. We anticipate beginning construction on the new trailhead in summer 2023. Please do not park on neighboring streets or in nearby residential areas.

Consider parking at Issaquah Transit Center or another Cougar Mountain trailhead identified on this map.
Questions? Contact Kelly Heintz, Natural Resource Land Planner.


About the Park:

The 3,000+ acre Cougar Mountain Regional Wildland Park is connected to Squak Mountain State Park by Cougar-Squak Corridor Park, which together is about 5,000 acres of protected area in the public land known as the "Issaquah Alps." The park is between 1,000 and 1,600 feet above sea level. 


Cougar Mountain Park has over thirty-five miles of trails winding through diverse habitats such as mature second-growth forests, streams and wetlands, cliffs, and nearby caves. While there are sweeping views of Lake Sammamish, the Cascades, Bellevue, Seattle, and beyond, there are areas of the park that are more remote from the sights and sounds of nearby urban development.


Although most of the trails at Cougar Mountain Regional Wildland Park are primarily for hikers, some trails allow horseback riding. Due to hazards from historical mining activities in the park, you must stay on the trails.



Issaquah Alps Trail Club

Mountains to Sound Greenway Trust

Northwest Trail Runs

Washington Trails AssociationWilderness Peak Loop



Park Activities: dog walking, hiking, horseback riding, nature observation, parking lot, picnic area, volunteerNo mountain bikes.




18201 SE Cougar Mountain Dr


Nearby Bus Stops: Year-round: Issaquah Transit Center served by Sound Transit and  King County Metro


Seasonally: Trailhead Direct


Parking: There is a parking lot at the Sky Country Trailhead with space available for horse trailers.


Trailheads: The park is accessible from four trailheads.


Red Town Trailhead: off Lakemont Blvd SE


Sky Country Trailhead: off Clay Pit Rd


Harvey Manning Trailhead: off SE Cougar Mountain Rd


Jim Whittaker Wilderness Peak Trailhead: off SR-900/Renton-Issaquah Rd



Cougar Mountain Trails Map

Cougar Mountain Trails Mapa en español

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


Park History:

Abridged history of Cougar Mountain Regional Wildland Park 

Relevant Links:

Cougar Mountain Regional Wildland Park updates: Click to subscribe to an email newsletter for updates about the park.