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Mt. Si

 4.4 (71)

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


All Clear 24 days ago
Dry 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

Aug 2, 2018
Max Barton
Jul 29, 2018
Matt Collins
6.6mi
Jul 22, 2018
Rickey Leachman
6.9mi
Jul 16, 2018
Malcolm Mikkelsen
Jul 15, 2018
Amanda Fullerton
Jul 14, 2018
Evan Finkelstein
Jul 4, 2018
Vikram Sahney
Ran down it today.
Jul 4, 2018
Lynette He

Trail Ratings

  4.4 from 71 votes

#29

Overall
  4.4 from 71 votes
5 Star
46%
4 Star
46%
3 Star
6%
2 Star
1%
1 Star
0%
Rankings

#2

in Washington

#29

Overall
850 Views Last Month
8,097 Since Jan 23, 2015
Intermediate/Difficult Intermediate/Difficult

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