The Toutle River runs for 17 miles in two separate forks, converging into one and finally spilling into the Cowlitz River just a few miles north of Castle Rock.

At this point on the boundary trail, you can see that ash still pervades its banks, though the inevitable spread of flora and fauna will soon build up enough topsoil to revitalize the area.

I had never seen a clearer, and more definitive view of the tributary, even in photographs. It is astounding how much of the mountain's topography, geology and habitat are on clear display on this trail. And on a beautiful day, you can't really find a more beautiful hike in the southwestern portion of the state.

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Our top choices for Castle Rock beach hotels

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Comfort Inn Kelso - Longview

Kelso

United States

Richard

NT$3,093 total

includes taxes & fees

Dec 29 - Dec 30

Desk, iron/ironing board, free cribs/infant beds, rollaway beds

Quality Inn & Suites Longview Kelso

Longview

United States

David

NT$2,653 total

includes taxes & fees

Jan 1 - 2026/1/2

Coffee service

Motel 6 Kelso - Mt. St. Helens

Kelso

United States

Reecia

NT$2,451 total

includes taxes & fees

Dec 22 - Dec 23

Traditional Suite, 1 King Bed (with Wet Bar) | Desk, blackout drapes, iron/ironing board, free WiFi

GuestHouse Kelso Longview

Kelso

United States

Marjani

NT$3,469 total

includes taxes & fees

Jan 1 - 2026/1/2

Property grounds

Clatskanie River Inn

Clatskanie

United States

Kathleen

NT$4,287 total

includes taxes & fees

Dec 21 - Dec 22

5 bars/lounges

McMenamins Kalama Harbor Lodge

Kalama

United States

John

NT$6,126 total

includes taxes & fees

Jan 1 - 2026/1/2

Indoor pool

Best Western Aladdin Inn

Kelso

United States

Tony

NT$3,433 total

includes taxes & fees

Dec 25 - Dec 26

Exterior

Sleep Inn Kelso Longview

Kelso

United States

Sybil Juwana

NT$3,202 total

includes taxes & fees

Dec 24 - Dec 25

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Top Castle Rock Hotel Reviews

GuestHouse Kelso Longview

GuestHouse Kelso Longview

10/10 Excellent

"I think this was my 14th stay there. Every time I come from Illinois I stay there because I just love it. "

Frequently asked questions

What is Castle Rock like for travelers who love the beach?

Reserve your ideal place to stay in Castle Rock, which has a lot to offer the traveler planning a beach vacation.

When's the best time for a beach vacation in Castle Rock?

You can plan your beach trip with this snapshot of weather throughout the year in Castle Rock: The hottest months are usually August and July with an average temp of 62°F, while the coldest months are February and December with an average of 40°F. The rainiest months in Castle Rock are November, December, January, and March, with each month seeing an average of 7 inches of rainfall.

What is there to see and do around Castle Rock?

After arriving and settling in at your accommodation of choice, you might want to venture out and explore. Beach lovers can head straight to Red Mill Beach or Dibblees Beach for some quality time by the water. Discover a variety of local attractions, which include Mount St. Helens Forest Learning Center and Loowit Trail #216. For more things to see and do, consider visiting Seaquest State Park or Cowlitz County Historical Museum.

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