Where to Find Old Growth Forest in Seattle

Last Updated on January 30, 2024

Looking for some giant, ancient trees? You can find old growth forest in Seattle! Before white people came to the Pacific Northwest, old growth forests were everywhere (before extensive logging to power steam ships and for building). Today there are very few old growth trees left in Washington State and all are protected and they are in unique and special places. Walking among old growth trees is a wonderful activity if you are trying to get outside all year! This post will cover what an old growth forest is and where you can find old growth forest in Seattle as well as other parts of Washington State.

What is an Old Growth Forest?

In the Pacific Northwest old growth forests are those which are more than 250 years old, have multiple layers of trees, plants and canopy, with dead trees on the ground to nourish the younger trees. The key element of an old growth forest is that it has not been disturbed by human activity (such as logging). Most trees near Seattle and in Washington State were logged between the mid 1800’s and the mid 1900’s, but a few were saved!

In addition to their beauty and the awe of being in the presence of a living thing that is centuries old, there are many health benefits associated with being outside in the forest, including reduced stress and even lowered blood pressure.

Where can I see Old Growth Forest in Seattle?

Seward Park – Southeast Seattle

The chunky bark of an old growth Douglas Fir tree in Seattle's seward park
An old growth Douglas Fir tree in Seattle’s Seward Park

Some of the few remaining old growth trees are protected in the heart of Seattle’s Seward Park. You can easily access Seward Park by driving, biking or taking Metro Route 50. Bring this map with you so you can navigate the many trails around the park. The loop trail is paved and goes around the perimeter of the park, but to be immersed in old growth trees, head up one of the trails going into the interior of the park on the north end. 

The loop trail is 2.5 miles and features views of Mt Rainier and downtown Seattle and has lots of birds including bald eagles. It’s an excellent place for swimming or kayaking in the summer too.

Schmitz Preserve Park – West Seattle

The papery bark of an old growth cedar tree and it's buttressed base in a dark forest in Seattle's Schmitz Preserve park
An old growth cedar tree in Seattle’s Schmitz Preserve park

In West Seattle, not far from Alki Beach, is Schmitz Preserve park, which features a 1.7 mile trail through the forest along a creek. This trail climbs up a bit but is never extremely steep. You can make this a longer adventure by walking along Alki beach as well. There are lots of restaurants and you can add this walk onto your beach day. Along the trail in Schmitz Preserve you’ll see a number of Old Growth trees toward the uphill end of the park.

Where else can I see Old Growth Forest near Seattle?

A hiker looks tiny next to an old growth Douglas Fir tree which we can only see the bottom of along a trail near Seattle
A hiker admires an old growth Douglas Fir tree along the Twin Falls Trail near Seattle

If you’re up for heading out of town or planning on doing some hiking, here are three trails within an hour of Seattle where you can see Old Growth trees along the trail.

  • Asahel Curtis Nature Trail: Near Snoqualmie Pass on I-90 about 50 miles east of Seattle is a one mile loop trail with about 200 feet of elevation gain featuring lots of old growth trees. A good opportunity to stretch your legs on a road trip.
  • Twin Falls Trail: Near the town of North Bend, about 30 miles east of Seattle is the stunning Twin Falls Trail, which is just under 3 miles round trip and has about 500 feet of elevation gain. It’s a beautiful trail along a river to gorgeous Twin Falls, and features some old growth trees shortly before you reach the waterfall.
  • Mt Si Trail: A tough and crowded hike to a great view, you can also do the Talus loop trail here (same crowded trailhead but on the Talus loop you’ll leave the crowds behind). Either option takes you through a stand of old growth trees just under two miles and 1500 feet up from the trailhead (about half the distance and a little bit less than half the elevation gain to the top).
  • Lake 22 Trail: Off the Mountain Loop Highway, near the town of Granite Falls, Lake 22 also has a gorgeous alpine lake and waterfalls. It’s 5.75 miles round trip with 1500 feet of elevation gain.

Where else can I see Old Growth Forest in Washington State?

Old Growth trees abound in the dark and green Hoh Rainforest in Olympic National Park. Even on a sunny day the sun barely makes it past the giant trees and moss to the forest floor
The Hoh Rainforest

If you’re up for going a bit further from Seattle and want to check out one of our amazing National Parks, here are two places to see Old Growth Forest where the trees are up to 1000 years old!

Old Growth Forest in Olympic National Park

There are multiple places to see Old Growth in Olympic National Park including the famous Hoh Rainforest. If you don’t have time to make it all the way to the Hoh (5 hours from Seattle) this Olympic National Park Itinerary talks about the Quinalt Rainforest and the old growth forest along the Barnes Creek Trail, both short and flat walks and closer to Seattle.

Old Growth Forest in Mt Rainier National Park

This best place to see Old Growth trees in Mt Rainier National Park is in Grove of the Patriarchs on the less often visited east side of the park. Here you can enjoy a flat 1.5 mile trail to a whole stand of old growth cedar and douglas fir trees which are 800-1000 years old! Absolutely incredible and awe inspiring. Another excellent old growth forest in Mt Rainier National Park is the Carbon River Valley, which is open all year.

An evergreen tree on the forest floor surrounded by standing trees and green undergrowth in Seward park, one place to see Old growth forest in Seattle. Text reads: where to find old growth forest in and near Seattle

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Jennie Flaming
Hi! I'm Jennie. I’m a fourth generation Seattleite. I lived in Alaska for many years and I still spend lots of time there every year visiting friends and working as a tour director. I've been a guide for many years in both Alaska and Washington, am a field editor for the Milepost and host the Alaska Uncovered Podcast about Alaska Travel as well as the Washington State Hiking Podcast. I love to share the places I love with visitors, newcomers and my fellow locals. I’m so glad to have you here!