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United States
Washington

Cowlitz County

The best walks and hikes in Cowlitz County

4.9

(64)

997

hikers

28

hikes

Hikes in Cowlitz County explore a landscape shaped by volcanic activity, dense forests, and major river systems. The region serves as a primary access point for the Mount St. Helens National Volcanic Monument, with trails crossing regenerated forests and past lakes formed by the 1980 eruption. Lower elevation areas feature riverfront paths and routes through parks like Seaquest State Park.

Best hiking trails in Cowlitz County

  • The most popular hiking route is Hummocks Trail loop — Mount St. Helens National…

Last updated: April 26, 2026

6

hikers

#1.

Boundary West Trail

7.19km

02:25

510m

10m

Embark on the Boundary West Trail for a moderate hike that offers a unique perspective on the Mount St. Helens landscape. This 4.5-mile (7.2 km) route involves a significant elevation…

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Moderate

4

hikers

2.67km

00:42

20m

30m

Embark on the easy Sediment Dam Loop, a pleasant hike that takes you through a mix of wooded areas and open fields. This route covers 1.7 miles (2.7 km) with…

Easy
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1

hikers

9.43km

02:56

370m

370m

Embark on the Toutle Trail, a moderate hike that guides you through a landscape dramatically shaped by volcanic activity. You will traverse 5.9 miles (9.4 km) and gain 1226 feet…

Moderate

2

hikers

7.34km

01:56

70m

40m

Embark on an easy hike along the Lakes Trail, a route that guides you through the unique volcanic landscape of Mount Saint Helens National Volcanic Monument. This pleasant journey covers…

Easy

2

hikers

5.39km

01:50

430m

30m

Embark on a moderate hike along the South Coldwater Trail, covering 3.3 miles (5.4 km) with an ascent of 1408 feet (429 metres). This route, typically completed in about 1…

Moderate

1

hikers

Embark on the Sheep Canyon and Toutle Trail Loop, a difficult hike that immerses you in the raw power of Mount St. Helens. This challenging 11.3-mile (18.2 km) route demands…

Hard

2.06km

00:31

10m

0m

Embark on an easy hike along the Marine Park Trail, a gentle route spanning 1.3 miles (2.1 km) with a minimal elevation gain of just 20 feet (6 metres). This…

Easy

Embark on an easy hike along the Coweeman River Trail, a pleasant 1.5-mile (2.3 km) route that follows a gravel-topped dike. You will experience a gentle elevation gain of only…

Easy

Embark on an easy hike through the lush fir forests of Seaquest State Park on the Seaquest #2, #5, #9 Loop. This 1.7-mile (2.7 km) route offers a gentle ascent…

Easy

Embark on the Frasier Creek and Ridgeline Trail for a moderate hike spanning 6.7 miles (10.8 km) with an elevation gain of 679 feet (207 metres). This route, estimated to…

Moderate
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Popular around Cowlitz County

Hiking around Longview

Hiking around Kelso

Hiking around Cougar

Hiking around Lexington

Hiking in Seaquest State Park

Hiking around Castle Rock

Running Trails in Cowlitz County

Road Cycling Routes in Cowlitz County

Cycling in Cowlitz County

Tips from the Community

T S
July 29, 2024, Hummocks Trailhead

Parking, portapotty

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mtm05005
July 4, 2024, Marine Park

Marine Park is a beautiful park along the Columbia River. The park has several walking and biking paths, a beach and a picnic area.

1

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Seaquest State Park is a 475-acre park along the banks of Silverlake. The park has hiking trails, a campsite and views of Mount. St. Helen's volcano.

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Now accessible only via the Blue Lake Trailhead (or a thru-hike), this bridge offers safe passage across Sheep Canyon and its riotous creek, both of which cut across the western flank of Mount St. Helens. Leave yourself a little time to hike upstream and see a waterfall.

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Lisa
August 25, 2023, Blue Lake

Blue Lake is small and shallow, and was relatively unaffected by the 1980 eruption of Mount St. Helens. But the land around it was affected, including major debris flows that deposited silt in the lake. Keep an eye out for huge noble firs near the lake.

1

0

If you'd like to avoid crowds around the other side of Coldwater Lake, starting here and hiking northeast gets you some nice views over the lake from elevation. Or, if you don't mind walking beside the road for a short distance, you can use this trailhead to link a complete, challenging loop around the lake.

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The South Fork Toutle River is a reliable water source along the Loowit Trail. There are also spots to pitch your tent at the south side of the river. A rope will help you to climb over the loose rock down and up the river bank.

5

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Here, you have a great view of the crater of Mount St. Helens.

1

0

Frequently Asked Questions

Are there many family-friendly hikes in Cowlitz County?

Yes, the area offers several great options for families. For a short, educational walk with views of Mount St. Helens, the Hummocks Trail loop is an excellent choice. Another easy and accessible option is the Seaquest State Park loop, which takes you through a lovely forested area.

Can I bring my dog on the trails?

Dog-friendliness varies by location. Dogs are generally permitted on-leash in the Gifford Pinchot National Forest, but they are prohibited on most trails within the Mount St. Helens National Volcanic Monument to protect wildlife and the fragile landscape. Always check the specific regulations for the trail you plan to hike before you go.

What are some good circular hikes in the area?

Cowlitz County has several enjoyable loop trails. For a moderately challenging hike through the volcanic landscape, consider the Blue Lake loop. If you're in Longview, the flat Lake Sacajawea Park loop is a popular and easy urban walk.

Are there any hikes with waterfalls?

Yes, the region is known for its beautiful waterfalls, especially within the Gifford Pinchot National Forest. The Lewis River is a highlight for waterfall hikes. For a moderate route that takes you to a scenic cascade, the hike to Sheep Canyon Falls is a fantastic option.

What's the best time of year to hike in Cowlitz County?

Summer and early fall (July through October) are ideal for hiking, especially at higher elevations around Mount St. Helens, when the trails are typically snow-free and the weather is mild. Lower elevation trails along rivers and in state parks can often be enjoyed year-round, with spring offering vibrant wildflowers and fall showcasing beautiful foliage.

Do I need a permit to hike near Mount St. Helens?

For most day-hiking trails in the Mount St. Helens National Volcanic Monument, you will need to display a National Forest Recreation Pass (like the Northwest Forest Pass or America the Beautiful Pass) in your vehicle. Permits are required for specific activities, such as climbing to the summit of Mount St. Helens, but not for general trail use on routes like the Coldwater Lake or Hummocks trails.

What are some challenging hikes for experienced hikers?

For those seeking a challenge, the area around Mount St. Helens provides strenuous options. The Coldwater Lake Loop is a long, demanding trek with significant elevation gain through the blast zone. Another difficult but rewarding route is the hike to the natural arch viewpoint, which offers incredible views as a payoff for its steep climbs.

Are there any easy, flat trails available?

Absolutely. For a very gentle walk, the Marine Park Beach trail in Kalama offers a flat path along the river. Similarly, the Riverfront Trail in Castlerock is an easy out-and-back route perfect for a relaxed stroll.

What kind of terrain should I expect on the trails?

The terrain is quite varied. Hikes within the Mount St. Helens National Volcanic Monument often cross rocky, exposed landscapes with fascinating geological features left by the eruption. In contrast, trails in the Gifford Pinchot National Forest and at lower elevations typically wind through dense, lush forests with softer, dirt paths, often following rivers and streams.

What do other hikers enjoy about Cowlitz County?

The region is highly rated by the komoot community, with an average score of 4.9 stars. Hikers frequently praise the dramatic and unique scenery of the Mount St. Helens area, noting the incredible experience of witnessing nature's regeneration. The well-maintained trails and beautiful river and waterfall hikes in the surrounding forests are also consistent highlights.

Are there any good hikes near the town of Longview?

Yes, Longview is right next to Lake Sacajawea Park, which features a very popular and easy walking loop around the lake. It's perfect for a quick dose of nature without leaving the city. For more traditional hiking, you can easily drive to nearby trail systems in the surrounding hills and forests.

What are some popular hiking areas in Cowlitz County?

Several spots are highly regarded by local and visiting hikers. Key areas include:

  • Mount St. Helens National Volcanic Monument: Home to a variety of trails like the popular Lava Canyon Trailhead, offering dramatic views of the volcanic landscape.
  • Gifford Pinchot National Forest: Contains beloved routes such as the Lewis River Trail, famous for its stunning waterfalls and lush forest scenery.
  • Willapa Hills State Park Trail: A well-liked trail that provides a different kind of scenery, following a former railroad line.

Most popular routes in Cowlitz County

Easy hikes in Cowlitz County

Most popular attractions in Cowlitz County

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LongviewSeaquest State ParkLexingtonCastle RockKelsoCougar

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