Mt Si Natural Resources Conservation Area · WA

Mt Si

Hard · Day hike · Best in Spring, Summer, Fall

Length

8 mi

Gain

3,150 ft

Scenery

★★☆☆☆

About this trail

Seattle's training-mountain-of-record. A relentless forested climb 30 minutes from downtown, ending at a haystack summit overlooking the Snoqualmie Valley.

Visiting from out of town? We can build a multi-day trip around Mt Si Natural Resources Conservation Area for you →

Highlights

Seattle skyline view
Cascades to Olympic panorama
Year-round access

Get there

Start: Trailhead · 47.4885, -121.7228

Open driving directions in Google Maps →

Along the way

Mt Si TH@ mile 0· 560 ft
Snag Flats@ mile 2
Mt Si plateau@ mile 4· 4,000 ft
Haystack base@ mile 4· 4,167 ft

Plan your visit on the interactive map

See Mt Si on the live Trailspark map alongside weather averages, gear lists, an elevation profile, and nearby points of interest.

Open Mt Si on the map →