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Hiking trails & Routes
United States
Washington
King County

Cougar Mountain to East Fork Trail via Coal Creek Falls loop

Routes
Hiking trails & Routes
United States
Washington
King County

Cougar Mountain to East Fork Trail via Coal Creek Falls loop

Moderate

3.5

(19)

47

hikers

Cougar Mountain to East Fork Trail via Coal Creek Falls loop

02:44

9.60km

220m

Hiking

Hike the moderate 6.0-mile Cougar Mountain to East Fork Trail loop, featuring lush forests and the picturesque Coal Creek Falls.

Last updated: February 26, 2026

Waypoints

A

Start point

Parking

Get Directions

1

374 m

Cougar Mountain Peak

Highlight • Summit

Cougar Mountain is a peak at the eastside of Seattle. The forested heart of the hill was officially preserved by King County in June 1983 as Cougar Mountain Regional Wildland Park.

Tip by

2

3.00 km

East Fork Trail

Highlight (Segment) • Trail

East Fork Trail is a quiet forest trail with small creeks and ponds, a vista of the Clay Pit, and plenty of mining artifacts.

Tip by

3

6.66 km

Cave Hole Trail

Highlight (Segment) • Trail

'Cave Hole Trail' is named after the caves that you can still find along the path. They are remnants of the mining history in the area.

Tip by

B

9.60 km

End point

Parking

Loading

Way Types & Surfaces

Way Types

9.38 km

150 m

< 100 m

Surfaces

7.41 km

1.97 km

150 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 (450 m)

Lowest point (300 m)

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Weather

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Wednesday 20 May

19°C

8°C

0 %

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Max wind speed: 7.0 km/h

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This route was planned by komoot.

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Frequently Asked Questions

Where can I park to access this loop trail?

This loop typically starts from trailheads within Cougar Mountain Regional Wildland Park, such as Red Town or Sky Country. These trailheads offer parking facilities. It's advisable to arrive early, especially on weekends, as parking can fill up.

Is this trail dog-friendly?

Yes, the trails within Cougar Mountain Regional Wildland Park are generally dog-friendly. However, dogs must be kept on a leash at all times to protect wildlife and ensure the safety of other hikers.

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

The loop can be hiked year-round. However, the East Fork Trail and Cave Hole Trail can be muddy, especially from December through May, making waterproof footwear essential. Coal Creek Falls is most impressive during the rainy, winter, and spring months, as it can reduce to a trickle in drier summers.

Are there any permits or entrance fees required for Cougar Mountain Regional Wildland Park?

No, there are no permits or entrance fees required to access Cougar Mountain Regional Wildland Park. It is free to enter and enjoy the trails. You can find more information on the King County Parks website.

What kind of terrain can I expect on this loop?

The terrain is varied, featuring wide, well-maintained gravel paths, narrower single-track dirt trails, and some rooted and rocky sections. You'll encounter gradual uphill and downhill stretches, with some steeper parts. Muddy conditions are common, particularly during wetter seasons.

What are the main points of interest along the route?

A major highlight is Coal Creek Falls, a picturesque 25-28 foot waterfall, especially beautiful after rain. You'll also pass through lush second-growth forests. The route includes sections of the East Fork Trail and Cave Hole Trail, offering quiet forest paths and glimpses of the Clay Pit area. You might also pass near Cougar Mountain Peak.

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

Yes, this loop is part of an extensive and interconnected trail system. It utilizes sections of several trails, including Tibbett's Marsh Trail, Harvey Manning Trail, Clay Pit Road, East Fork Trail, Cave Hole Trail, Coal Creek Falls Trail, Quarry Trail, Lost Beagle Trail, Fred's Railroad Trail, and Cougar Pass Trail, among others. This allows for customization of routes.

What should I wear or bring for this hike?

Given the varied terrain and potential for mud, especially during wetter months, waterproof hiking boots are highly recommended. Layers of clothing are advisable, and carrying a detailed trail map or using a reliable hiking app is crucial due to the park's numerous interconnected trails and good signage.

Are there any historical features to look out for?

Yes, the park has a rich coal mining history from 1863 to 1963. Along trails like the Coal Creek Falls Trail, you might spot remnants such as 'cave holes' (formed by collapsed underground extractions) and other artifacts, offering a glimpse into the area's past.

Is this loop suitable for beginners?

The overall difficulty of a loop incorporating Coal Creek Falls and the East Fork Trail is generally considered moderate. While some sections are easy, others can be steeper, rooted, or muddy. It's a good option for a casual day hike or a moderate workout, but beginners should be prepared for varied conditions and a distance of around 9.6 km.

How accessible is Cougar Mountain Regional Wildland Park from nearby cities?

The park is very accessible, located only about 14 miles east of Seattle, near Bellevue and Issaquah. This makes it a convenient escape into nature for urban dwellers looking for a quick outdoor adventure.

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