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Hiking trails & Routes
United States
Washington
King County

Sky Country to Harvey Manning Loop

Moderate

2.6

(15)

80

hikers

Sky Country to Harvey Manning Loop

02:03

7.32km

140m

Hiking

Hike the moderate 4.5-mile Sky Country to Harvey Manning Loop in Cougar Mountain Regional Wildland Park, enjoying quiet forests and viewpoin

Last updated: February 26, 2026

Waypoints

A

Start point

Parking

Get Directions

327 m

Nike Site S-20

Ruins

2

3.22 km

Cougar Mountain

Highlight • Summit

There is a small bit of gravel road up to the 1,614-foot Cougar Mountain. Although it is gravel, the road is generally well-maintained, but might be a little unpleasant on …

Tip by

3

3.39 km

Beautiful place with a great view at Lake Sammamish and Mount Baker.

Tip by

4

5.85 km

Cougar Mountain Park spans nearly 3,000 acres, featuring over thirty-five miles of fantastic trails winding through second-growth forests, streams, wetlands, cliffs, and historical mining caves. There are breathtaking views throughout …

Tip by

B

7.32 km

End point

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Way Types & Surfaces

Way Types

6.29 km

883 m

144 m

Surfaces

3.22 km

3.13 km

860 m

< 100 m

< 100 m

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Elevation

Elevation

Nothing selected – click and drag below to see the stats for a specific part of the route.

Highest point (430 m)

Lowest point (350 m)

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Weather

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Today

Friday 8 May

17°C

7°C

0 %

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Max wind speed: 16.0 km/h

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This route was planned by komoot.

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Frequently Asked Questions

How much time should I allocate for hiking this loop?

The Sky Country to Harvey Manning Loop is approximately 7.3 kilometers (4.5 miles) long and typically takes around 2 hours to complete. This duration allows for a comfortable pace and brief stops to enjoy the scenery.

Is this trail suitable for beginners or families with children?

Yes, this loop is generally considered an easy to easy-moderate hike, making it suitable for most skill levels, including beginners and families. While there are some modest inclines, the well-maintained path and tranquil forest environment offer an enjoyable experience. It's a great option for those looking for an accessible outdoor adventure.

What is the terrain like on the Sky Country to Harvey Manning Loop?

The terrain features well-drained soil, making it traversable even after rain, and is typically snow-free. You'll encounter a verdant forest with some modest incline gain. Sections can be narrow, squeezing between trees and stumps, and there are short, narrow footbridges over small creeks. The path is generally smooth, but sturdy footwear is recommended.

What can I see along the route?

The loop offers a tranquil, forested environment with a variety of visual textures. Notable points include the Pergola Viewpoint – View of Lake Sammamish and Mount Baker, often referred to as the "Million Dollar Viewpoint." You'll also be immersed in the Cougar Mountain Regional Wildland Park forest.

What wildlife or plants might I encounter?

Hikers can spot wildflowers, especially in early spring, with violets and salmonberry being abundant. Butterflies also begin to appear then. In denser, older forest sections, you might hear Pacific Wrens, and Pacific Chorus Frogs are audible in the Clay Pit area. The park is home to various forest creatures, though they are often shy.

What is the best time of year to hike this trail?

The trail is accessible year-round. However, late spring is particularly recommended for visiting, as this is when the park's small creeks and hidden waterfalls are at their best. Early spring also offers beautiful wildflowers. The well-drained soil means it's a good option even after rain.

Is the Sky Country to Harvey Manning Loop dog-friendly?

Yes, the trail is dog-friendly! Please ensure your dog remains on a leash at all times to protect wildlife and ensure a pleasant experience for all visitors.

Do I need a permit or is there an entrance fee for Cougar Mountain Regional Wildland Park?

No, there are no entrance fees or permits required to access the trails within Cougar Mountain Regional Wildland Park, including the Sky Country to Harvey Manning Loop. It is free to enjoy.

Where is the best place to park for this trail?

The most common access point is the Sky Country Trailhead, located within Cougar Mountain Regional Wildland Park. There is a dedicated parking lot available there, providing convenient access to the loop.

Does this loop connect with other trails in Cougar Mountain Regional Wildland Park?

Yes, this loop is part of a larger network of interconnected trails within the park. It utilizes sections of trails such as Clay Pit Road, Tibbett's Marsh Trail, Old Man's Trail, Harvey Manning Trail, and Cave Hole Trail, offering flexibility to combine it with other paths for longer, customized adventures.

Are there any specific considerations for hiking this loop in winter?

While the trail is generally snow-free and accessible year-round due to its well-drained soil, winter conditions can still bring colder temperatures and potentially muddy sections. Always check local weather forecasts, wear appropriate layers, and be mindful of shorter daylight hours. The quiet atmosphere can be particularly serene in winter.

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