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Mt. Si

 4.4 (85)
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Map Key

Length


6.6 Miles 10.7 Kilometers


3,281' 1,000 m

Ascent

-3,282' -1,000 m

Descent

19%

Avg Grade (11°)

41%

Max Grade (22°)

3,999' 1,219 m

High

717' 219 m

Low

Conditions


Minor Issues 22 days ago
Snowy History

Getting forecast...

A steep, well-maintained trail takes you atop Mt. Si with outrageous views of Puget Sound.

Benjamin Pontecorvo

Dogs Leashed

Features Birding · Fall Colors · River/Creek · Views · Wildlife

Discovery Pass required year round.

Overview

This is a classic, well-traveled hike leading to the top of Mt. Si. There is a small portion of scrambling at the summit that is optional.

Description

From the trailhead, follow the well marked "Mt. Si Trailhead" or just follow the throngs of people on this deservedly popular trail. The endless switchbacks and steep terrain begin almost immediately, and will continue until the very top. This trail offers intermediate terrain that can be useful for both the novice hiker and a more experienced outdoors person training for a bigger objective. You'll gain more than 3000 vertical feet in under four miles of beautiful old growth forest. The canopy finally breaks close to the top, revealing some views to the South.

Once out of the forest, there are many outcroppings to enjoy your lunch and some views. Most people will stop here- but the more adventurous can continue uphill and right on a stony path to the Haystack, Mt. Si's true summit. This extra 150 ft of scrambling is class 3/4 and is well worth is as the views to the North are revealed.

On your way down please do not cut trails. What saves you 30 seconds can cause decades of damage. Also you'll need a discovery pass to park at the lot. Have fun!

Flora & Fauna

You will walk over three miles through old growth forest.

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Your Check-Ins

Check-Ins

Mar 16, 2019
Eric Baldwin
Mar 3, 2019
Derek Lee
well worn boot path in the snow all the way to the top. Spikes were useful 8.9mi — 3h 40m
Feb 3, 2019
Nate B
Jan 26, 2019
JEFF DAVIS
6.6mi
Nov 25, 2018
Michael K
Absolute pain in the ass. Minimal snow on the ground at the top. 8mi
Nov 25, 2018
Jamie Martinez
Nov 2, 2018
Jay Kim
Oct 22, 2018
Bethany V
9.6mi

Trail Ratings

  4.4 from 85 votes

#29

Overall
  4.4 from 85 votes
5 Star
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Rankings

#2

in Washington

#29

Overall
360 Views Last Month
11,503 Since Jan 23, 2015
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