Hiking Mt. Si

Situated in the Snoqualmie Region of Washington State, just North of Mount Rainer. Mount Si has a ton to offer, and stands as one of the most popular trails in the area. It is well trafficked by novice and advanced hikers alike.


Considered a moderate to strenuous hike. The trail is an 8 miles round trip day hike with approximately 3200 ft of elevation gain. This steep trek offers breath-taking views of the Puget Sound and Snoqualmie Valley.


Public Transport:

New transit lines in the region offer transportation to local hiking destinations. Mount Si, Issaquah Alps, and Mailbox Peak. Trailhead Direct makes it accessible for hikers to get to remote trailheads and eliminates congested parking lots while also eliminating Carbon emissions.


Plan Ahead:

This Trail is heavily trafficked especially on fair weather weekend days. An estimated 100,000 people hike this trail each year.


The Mount Si trail starts just off the parking lot, near the picnic area and the outhouse.


The trail is moderate for the first two miles, then dramatically evolves into climbing steep switchbacks. The scenery is diverse and eventually flatness out to wind through old growth trees that are wildly impressive. You will be blown away at the massive girth and size of these trees that frame the trail in all directions.


Beyond the old growth forest, the trail steepens further through much younger forest. At three and a half miles a brief break in the canopy yields the first view of the valley to the South. On a clear day Mount Rainer takes over the horizon to the SE for some magnificent views.


At the peak , the trail seemingly ends and the “Lunch Spot”. However the rocky surface known as Haystack can be scrambled with a bit of climbing experience. Caution should be practiced here. Boulders have been known to tumble and critically injure unsuspecting hikers below. If you are up for it, and the conditions permit, the 360 views atop haystack are well worth the extra effort.


  • Length: 8 Miles Roundtrip

  • Elevation Gain:  ~ 3200 Ft

  • Route: Out and Back

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