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.
Last updated: April 26, 2026
6
hikers
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…
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…

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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…
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…
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…
1
hikers
18.2km
06:00
850m
850m
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…
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…
2.34km
00:35
0m
0m
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…
2.69km
00:45
50m
50m
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…
10.8km
02:58
210m
120m
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…
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Marine Park is a beautiful park along the Columbia River. The park has several walking and biking paths, a beach and a picnic area.
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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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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.
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Here, you have a great view of the crater of Mount St. Helens.
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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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
Several spots are highly regarded by local and visiting hikers. Key areas include:


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