Create an account

Start your adventure today.


    Already a member? Login

    Little Si Trail

    This reflects the 10Adventures difficulty rating for each route. We aim to keep ratings consistent across regions.
    This reflects the estimated time the majority of users will take on this trail. If you are slower, add time to the top-end figure. If you are fast, then you may complete this route faster than this time range.
    This reflects the return distance of this route as measured by the GPS file.
    5.8 km
    This reflects the total elevation gained throughout this route as measured by the GPS file. This includes all ascents and descents, and is higher than what is quoted in most route guides, which simply measure the distance between the starting-point and high-point of the route.
    349 m
    User Ratings
    These ratings are completed by users who have completed this trail and not subject to reviews by 10Adventures.
    Be the first to add a review!
    Directions to Trailhead

    The Little Si Trail is a 5.8 km out and back trail that sees heavy traffic and is rated as moderate. Little Si provides access to the longer, more difficult Mount Si trail, so it sees both newer and more experienced hikers. The two peaks together are sometimes called “Resolution Peaks” due to the number of hikers that come after January 1st, but this is a wonderful hike no matter the time of year or end goal. Little Si has the unique advantage of being mostly sheltered from inclement conditions, so it is usually hikeable all year long.

    While the trail begins and ends with steeper sections, they are relatively short-lived and the remainder of the hike is moderate, making this trail suitable for many levels.

    Download the 10Adventures App

    View Little Si Trail on Map

    View Map

    Join our newsletter

    Get a weekly dose of discounts and inspiration for adventure lovers

    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.

    Getting to the Little Si Trail Trailhead

    The trailhead for the Little Si Trail is located on SE Mt. Si Road, 3.9 km past the turn onto the road. The trailhead is on your left. The parking fills on weekends, but there is a small overflow lot on 434 Ave SE.

    Route Information

    • Backcountry Campground


    • When to do


    • Pets allowed

      Yes - On Leash

    • Family friendly

      Older Children only

    • Route Signage


    • Crowd Levels


    • Route Type

      Out and back

    Little Si Trail Elevation Graph

    Weather Forecast

    Check Area Weather

    Little Si Trail Reviews

    Add a comment

    You must be logged in to post a comment.

    Nearby Trails

    Nearby Regions

    Get travel inspiration and discounts

    Join our weekly travel newsletter