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King County

Olallie State Park

Routes
Hikes
King County

Olallie State Park

The best family-friendly hikes and walks in Olallie State Park

4.8

(333)

7,606

hikers

51

hikes

Family friendly hiking trails in Olallie State Park are situated on the western slopes of the Cascade Mountains, characterized by powerful waterfalls, lush old-growth forests, and the South Fork of the Snoqualmie River. The park's terrain ranges from riverside paths to ascents offering views of the Snoqualmie Valley and surrounding mountains. Notable features include the prominent Twin Falls and dense woodlands with large old-growth trees.

Best family friendly hiking trails in Olallie State Park

  • The most popular family friendly hiking…

Last updated: May 14, 2026

4.0

(2)

20

hikers

#1.

Dirty Harry's Balcony Trail

3.50km

01:22

380m

30m

Embark on the Dirty Harry's Balcony Trail, a moderate hike that takes you through diverse forest scenery. You will cover 2.2 miles (3.5 km) and gain 1230 feet (375 metres)…

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Moderate

Hike the easy 2.7-mile Palouse to Cascades Trail from Homestead Valley to Mine Creek Trestle, featuring historic railway bridges and scenic

Easy
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Hike the difficult 44.9-mile Palouse to Cascades State Park Trail, gaining 2760 feet through diverse landscapes and the Snoqualmie Tunnel.

Hard

8

hikers

Easy 0.9-mile hike to Weeks Falls in Olallie State Park, perfect for families and all abilities.

Easy

Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.

Moderate
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Tips from the Community

MNataly W.
October 6, 2025, Dirty Harry’s Balcony

Rocky, clean, 7 km good for kids

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Alex
June 11, 2025, Hall Creek Trestle

The Hall Creek Trestle is a historic steel and timber railway bridge built in 1912. It was once the old Milwaukee Road until, in 1988, a storm washed away a central 171-foot section of the bridge. In the 1990s, Washington State Parks restored the trestle, reconnecting the east and west segments of the former rail line, which is now part of the Palouse to Cascades (Iron Horse) Trail. The views down into Hall Creek Valley are genuinely stunning and worth the ride!

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Roberto A.
December 16, 2024, Hall Creek Trestle

Great views from here. And... the middle of the trestle is different than either end because it had collapsed and was rebuilt in the late 90's

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Roberto A.
December 16, 2024, "The Seals"

I am always amazed how different this lake looks in the spring (full) versus the fall (almost empty). Those "Seals" are visible in the fall but then go for a long swim in the winter and spring...

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The State Park is on the West shore of Lake Easton - very nice campground. An excellent overnight spot in the Spring/Summer/Fall when doing the Palouse to Cascades trail. Worth looping around the lake to see it from all sides and experience the tunnel and bridges. Decent provisions available in town.

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Great bridge! You can ride all the way around Lake Easton, over this bridge, under a cool tunnel, past the State Park, and across another bridge that used to be the main highway across the cascades (Highway 10). Very beautiful ride!

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Roberto A.
September 25, 2024, Lake Easton Tunnel

This is the last tunnel you will see until (or the first tunnel you have seen since) Thorp. Wooded, along the lake, nice spot to stop.

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...and for no particular reason, someone has thought of your needs. This toilet is here, just in case!

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Frequently Asked Questions

How many family-friendly hiking trails are there in Olallie State Park?

Olallie State Park offers a wide variety of trails, with nearly 20 routes specifically categorized as easy or moderate, making them suitable for families. In total, there are over 50 hiking routes to explore within the park.

Are there any easy trails with waterfalls suitable for families?

Yes, Olallie State Park is famous for its waterfalls. The Weeks Falls Interpretive Trail is an easy, short walk perfect for families to experience the beauty of Weeks Falls. For a slightly longer but still family-friendly option, the Twin Falls Trail leads to the impressive Twin Falls, a highlight of the park's 'waterfall corridor'.

What are some good options for a family-friendly circular hike?

For families looking for a circular route, the Dirty Harry's Balcony – Dirty Harry's Balcony loop from Olallie State Park South Fork Fishing Access offers a moderate challenge with rewarding views. While it's a longer option, it provides a great loop experience through the park's diverse terrain.

Are there any stroller-friendly trails in Olallie State Park?

While many trails in Olallie State Park feature natural terrain, some sections of the Palouse to Cascades Trail are generally flat and wide, making them more accessible for strollers, especially near the Cedar Falls trailhead. It's always best to check current trail conditions for specific accessibility.

What is the best time of year to visit Olallie State Park with family?

Olallie State Park is beautiful year-round, but late spring through early fall (May to October) generally offers the most pleasant weather for family hikes. During these months, trails are typically dry, and the lush old-growth forests and waterfalls are at their most vibrant. Fall also brings stunning foliage.

What interesting landmarks or natural features can we see along the trails?

Beyond the spectacular waterfalls like Twin Falls, hikers can explore majestic old-growth forests with trees exceeding 10 feet in diameter. You might also spot the Cedar Butte peak or the scenic Olallie Trail. The park also features impressive cliff formations and the historic Old Snoqualmie Wagon Road.

Is Olallie State Park dog-friendly for family hikes?

Yes, Olallie State Park generally welcomes dogs on its trails, provided they are kept on a leash. This makes it a great destination for families who want to bring their canine companions along for the adventure. Always remember to pack out what you pack in, including pet waste.

Where can we park for family-friendly trails in Olallie State Park?

Olallie State Park has several parking areas, including near the South Fork Picnic Area and the Cedar Falls trailhead, which provide convenient access to many family-friendly routes like the Twin Falls Trail and sections of the Palouse to Cascades Trail. A Discover Pass is typically required for parking.

What do other hikers enjoy most about hiking in Olallie State Park?

The komoot community highly rates Olallie State Park, with an average score of 4.8 stars. Reviewers often praise the stunning waterfalls, the peaceful old-growth forests, and the well-maintained trails that cater to various skill levels, making it a favorite for family outings and scenic strolls.

Are there any easy trails that offer mountain views?

While many trails focus on the river and forest, some routes offer glimpses of the surrounding mountains. For more expansive mountain views, trails like Dirty Harry's Balcony Trail provide rewarding vistas, though it's considered a moderate hike. Even on easier trails, the dramatic terrain hints at the larger Cascade Mountain landscape.

Can we find any cafes or amenities near Olallie State Park after our hike?

Olallie State Park itself is primarily a natural area with limited amenities. However, due to its proximity to Seattle and nearby towns along the I-90 corridor, you can find various cafes, restaurants, and other services a short drive away in communities like North Bend or Snoqualmie, perfect for a post-hike treat.

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