Field trip: Winter Hiking Series: I-90 Alley
Winter Hiking Series: I-90 Alley March Hikes - Little Si & Boulder Garden Loop
Trip initially open to Winter Hiking Series students. Trip will open for registration to all Mountaineers 7 to 10 days prior to the hike date.
Contacts
- Sun, Mar 8, 2026
- Tacoma Hiking & Backpacking Committee
- Day Hiking
- Adults
- Moderate
- Mileage: 7.5 mi
- Elevation Gain: 2,000 ft
- FULL, 2 on waitlist (6 capacity)
- FULL (2 capacity)
- Mon, Feb 16, 2026 at 8:00 AM
- Fri, Mar 6, 2026 at 5:00 PM
- Cancellation & Refund Policy
- iCal Google
***Trip initially open to Winter Hiking Series students. Trip will open for registration to all Mountaineers 7 to 10 days prior to the hike date.***
I actually like this hike a lot but it is more than just Little Si and the Boulder Garden Loop since we traverse over to Big Si to do part of the Mt. Si trail to an area where we can get a little education about a prior fire on that mountain. In addition, you will learn a cool way to travers to Big Si! With the added travel over to Big Si, this hike will be about 7.5 miles and a little over 2000ft elevation in all. Come and enjoy some hiking on both Little and Big Si!
8:30am at the Little Si Trailhead.
Required Equipment
10 Essentials PLUS microspikes