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blueBlack Mt. Si

  4.4 ( 99 ) Favorite

Trail

6.6 mile 10.7 kilometer out and back
Singletrack
Intermediate/Difficult

Elevation

Ascent: 3,281' 1,000 m
Descent: -3,282' -1,000 m
High: 3,999' 1,219 m
Low: 717' 219 m

Grade

Avg Grade: 19% (11°)
Max Grade: 41% (22°)

Dogs

Leashed
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Map Key

Trail shared by Benjamin Pontecorvo

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

Benjamin Pontecorvo

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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Check-Ins

Jun 16, 2019
Claudia Ki
this is the old trail, there is another trail that ends up being 8miles 6.6mi
Jun 16, 2019
Kyle Harvey
Jun 16, 2019
Alexander Tolstoy
Jun 15, 2019
Short Circuit
3h 20m
Jun 9, 2019
Philip McGrath
Jun 9, 2019
Karel Rank
5.5mi — 2h 32m
Jun 4, 2019
Pam Greene
Jun 2, 2019
Chris K
1hr16min up; 57m down 6.6mi — 2h 09m

Trail Ratings

  4.4 from 99 votes

#37

Overall
  4.4 from 99 votes
5 Star
49%
4 Star
43%
3 Star
4%
2 Star
3%
1 Star
0%
Rankings

#2

in Washington

#37

Overall
377 Views Last Month
12,446 Since Jan 23, 2015
Intermediate/Difficult Intermediate/Difficult

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23%
63%
11%
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