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Routes
Hiking trails & Routes
United States
Washington
King County

Little Si Trail

Moderate

2.8

(15)

46

hikers

Little Si Trail

02:24

5.90km

270m

Hiking

Hike the moderate 3.7-mile Little Si Trail for 875 feet of elevation gain and panoramic views of the Snoqualmie Valley.

Last updated: February 26, 2026

Tips

Your route passes through a protected area

Please check local regulations for:

Mount Si Natural Resources Conservation Area

Waypoints

A

Start point

Parking

Get Directions

1

263 m

Little Si Trail Viewpoint

Highlight • Viewpoint

This viewpoint comes up very quickly, offering a preview of what you'll see as you continue climbing up the trail. Take care that you don't literally go "climbing," as some of the side trails here are access routes for rock climbing.

Tip by

2

2.94 km

Little Si Summit

Highlight • Summit

Although Little Si is only 1,550 feet (472 m) in elevation, it offers surprisingly good views of the valley all around you. On a clear day, you also get good views of nearby peaks like Mount Si and Mount Washington.

Tip by

B

5.90 km

End point

Parking

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Way Types & Surfaces

Way Types

5.88 km

< 100 m

Surfaces

5.88 km

< 100 m

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Elevation

Elevation

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Weather

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Today

Wednesday 6 May

20°C

11°C

0 %

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Max wind speed: 10.0 km/h

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This route was planned by komoot.

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Frequently Asked Questions

Where can I park for the Little Si Trail, and is there a fee?

The trailhead for Little Si is located near North Bend, Washington. Parking is available at the trailhead, but it can become very competitive, especially on sunny weekends. A Discover Pass is required for parking.

Do I need a permit or pay an entrance fee for this trail?

Yes, a Discover Pass is required for parking at the trailhead. This trail is located within the Mount Si Natural Resources Conservation Area, and the pass helps support Washington's state recreation lands.

Is the Little Si Trail dog-friendly?

The trail is generally dog-friendly, but always ensure your dog is on a leash and that you follow all local regulations for pet waste and control. It's a popular trail, so expect to encounter other hikers and their dogs.

When is the best time of year to hike this trail?

The Little Si Trail is accessible year-round. While it's popular in spring and summer for its lush scenery and views, it doesn't reach elevations that accumulate significant snow, making it a good option even in cooler months. Be prepared for potentially muddy conditions, especially in spring.

What is the terrain like on the Little Si Trail?

The terrain is diverse, featuring mostly rocky and rooted paths. You'll encounter winding switchbacks, particularly at the start, and generally well-maintained trails. Sections pass through canopied forest, a prominent scree slope, and a boulder field. The initial ascent can be steep, with more level sections offering respite before the final push to the summit.

What kind of views and landmarks can I expect on the route?

As you ascend, you'll be treated to breathtaking panoramic views of the Snoqualmie Valley and Rattlesnake Mountain. On clear days, the summit offers stunning vistas of nearby peaks like Mount Si and Mount Washington. Notable points include the Little Si Trail Viewpoint and the Little Si Summit. You might also spot rock climbers on the cliff faces.

Is the trail suitable for beginners?

The Little Si Trail is classified as moderate in difficulty. While it has steep inclines at the beginning and near the summit, there are flatter sections in between. It's a good option for those with a reasonable fitness level looking for a challenge without the extensive mileage of Mount Si. Beginners might find the steep sections challenging but manageable with breaks.

How long does it typically take to hike this trail?

The hike typically takes around 2 hours and 23 minutes to complete, covering a distance of approximately 5.9 kilometers (3.7 miles) round trip.

How does the Little Si Trail compare to Mount Si?

Little Si is often referred to as the "little sister" to Mount Si. It offers a less strenuous alternative with comparable rewarding views but less effort, making it suitable for families, novice hikers, or those looking for a quicker outing. It has a moderate difficulty compared to Mount Si's more challenging rating.

Does the trail intersect with other paths?

Yes, the route also passes through sections of the Little Si, Mount Si Old Trail, Little Si Trail, Boulder Garden Loop Trail, and British Aisles Climbing Approach.

Are there opportunities for rock climbing near the trail?

Yes, the trail passes by cliff faces that are popular with rock climbers. There are spur trails specifically for rock climbing access, adding another recreational dimension to the area.

Is there a good strategy to avoid crowds or find parking?

Parking at the trailhead can be very competitive, especially on sunny weekends. To increase your chances of finding a spot and enjoying a quieter experience, it's advisable to arrive early in the morning, particularly on popular days.

Nearby routes

Moderate

4.8

1,091

Rattlesnake Ledge Trail

02:49h

8.70km

400m

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