Little Si Trail

Route Description for Little Si Trail

Little Si is the shorter, easier, more relaxed counterpart to the extremely popular Mount Si Trail. As a year-round hike sheltered from the weather with close proximity to Seattle, you can easily bet on the trail being busy most weekends. The hike itself is nicely moderate, with only two steeper sections. It’s suitable for beginners looking to get into hiking shape and veterans wanting a laid-back day. Just remember to practice good trail etiquette on this busy outing.

The Little Si Trail begins with a steep incline just after the trailhead, winding up switchbacks. Remember, this trail starts out steeper than it is on average, so this won’t last! The first 0.4 km or so will warm you up efficiently, but the path then levels out a bit.

About 0.3 km into the hike, hop off the trail southwest to enjoy the view into the valley from a small ridge. It’s a small preview of your summit view!

There are two chances to take the Boulder Garden Loop, one at 0.5 km and one at 0.8 km. This loop can either add some distance if you want it or take you onto the Mount Si Trail. To remain on Little Si Trail, keep left.

Hiking through the forest, you’ll wrap around the summit slope before making your final ascent. This is another steep section, but it doesn’t last too long- only about 1.2 km.

Atop the little mountain, you’ll be treated to wide views over the surrounding valley, Mount Si, and even Mount Washington on a clear day.

Satisfied with your view, retrace your steps to return to the parking lot.
Hiking Route Highlights

Mount Si

1,270 m Mount Si is one of the features of the view from Little Si. Where Little Si is a moderate, relatively short hike, Mount Si is steep and considerably more demanding. The mountain actually sees upwards of 100,000 visitors each year, partly because of its proximity to Seattle and partly because of the great views from the top. Once you’ve climbed Little Si, it might be time to set your sights on Mount Si!

Frequently Asked Questions

Can you hike Little Si in the winter?

Yes, this hike can be completed year-round. There is no significant avalanche risk on the mountain, but the steep trail may become slippery in cold conditions. Exercise caution and enjoy the unique winter view!

Can you get to Mount Si from Little Si?

Yes, the trail through Boulder Garden Loop can be used as a connector between the two.

What pass do I need for Mount Si?

Please have your Discover Pass ready for this hike.

Insider Hints for Little Si Trail

• You can take the Trailhead Direct bus from Seattle to Little Si to avoid issues with parking.
• This trail is well-maintained, but you should still work to mitigate the effects of heavy foot traffic. Pack out what you pack in and try to stay on the trail to cut down on erosion and damage to the foliage beside the trail.