4.6
(9257)
12,668
hikers
09:32
31.5km
1,030m
Hiking
The Cougar Mountain Extended Loop offers a challenging hike through diverse Pacific Northwest forests. You will navigate 19.6 miles (31.5 km) of varied terrain, gaining 3392 feet (1034 metres) over an estimated 9 hours and 32 minutes, making this a difficult full-day adventure. Expect to traverse paths winding through dense…
Last updated: April 23, 2026
Waypoints
Start point
Parking
Get Directions
961 m
Highlight • Forest
Tip by
3.11 km
Highlight • Summit
Tip by
9.29 km
Highlight • Structure
13.8 km
Viewpoint
Viewpoint
17.6 km
Shy Bear Pass
Mountain Pass
18.2 km
Long View Peak
Peak
19.1 km
Highlight • Viewpoint
Tip by
21.0 km
Highlight • Viewpoint
Tip by
21.7 km
Highlight • Viewpoint
Tip by
23.4 km
Marshall's Hill
Peak
26.2 km
Highlight • Trail
Translated by Google •
Tip by
28.9 km
Highlight • Waterfall
Tip by
30.9 km
Nike Site S-20
Ruins
31.5 km
End point
Way Types & Surfaces
Way Types
29.5 km
1.90 km
< 100 m
Surfaces
14.8 km
14.3 km
2.32 km
< 100 m
< 100 m
< 100 m
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Elevation
Highest point (470 m)
Lowest point (150 m)
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Weather
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Today
Wednesday 8 July
24°C
13°C
14 %
Additional weather tips
Max wind speed: 10.0 km/h
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This route was planned by komoot.
This extended loop is a challenging hike, and it's estimated to take approximately 9.5 hours to complete. This duration can vary based on your pace, fitness level, and how often you stop to enjoy the scenery.
The terrain on this route is quite varied, typical of the Pacific Northwest. You'll encounter a mix of well-groomed paths, areas with more roots and rocks, and gravel sections. The trail winds through dense, mature second-growth forests, featuring towering Douglas firs and western red cedars, and traverses various habitats including streams and wetlands. While elevation climbs are generally gradual, the sheer length of this extended loop means you'll accumulate significant elevation gain.
This extended loop offers classic Pacific Northwest scenery with lush forests, ferns, and moss. Highlights along the way include the picturesque Coal Creek Falls, and several viewpoints such as Doughty Falls Viewpoint and Far Country Lookout. You'll also cross wooden footbridges over swampy passages, adding to the natural charm.
Beyond the natural beauty, the route passes through the Cougar Mountain Regional Wildland Park, and reaches the Cougar Mountain Peak. You'll also find historical remnants like the Mine Exhaust Shaft and Bench, offering a glimpse into the area's past mining activities.
Yes, this extensive route utilizes several named trails within the park. You'll hike sections of the Shy Bear Trail, Whittaker Wilderness Peak Trail, Clay Pit Road, Tibbett's Marsh Trail, and Marshall's Hill Trail, among others, as you navigate the extended loop.
Cougar Mountain Regional Wildland Park has multiple trailheads with parking. For an extended loop of this nature, it's advisable to check the King County Parks website for specific trailhead parking availability and directions, as parking lots can fill up, especially on weekends. You can find more information on the King County Parks website.
No, there are generally no permits or entrance fees required to hike in Cougar Mountain Regional Wildland Park. It is a public park managed by King County Parks. However, always check the official King County Parks website for any updated regulations or specific event requirements before your visit.
Yes, dogs are generally allowed on trails within Cougar Mountain Regional Wildland Park. However, they must be kept on a leash at all times to protect wildlife and ensure the safety and enjoyment of all park visitors. Please remember to pack out all pet waste.
Due to its relatively low elevation, Cougar Mountain can be visited year-round. However, the months of June through September typically offer the best weather conditions for hiking, with less rain and milder temperatures. Be prepared for muddy sections during the wetter seasons.
While the park is close to urban areas, direct public transport access to specific trailheads for an extended loop can be limited. It's best to research King County Metro bus routes that serve the Bellevue/Issaquah area and check their proximity to various park entrances. Some trailheads might require a short walk or a ride-share connection from the nearest bus stop.
The Cougar Mountain trail system is highly notable for its proximity to urban areas (only 14 miles east of Seattle), offering an accessible natural escape. It boasts an extensive and interconnected network of over 35 miles of trails, allowing for numerous custom loops of varying lengths and difficulties. The park also protects diverse ecosystems and holds historical significance with remnants of former mining activities.
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