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Mount Si

Last modified Nov 12, 2009 08:42 PM
Contributors: CourtenayH
Mt. Si. Photo by Bob Brooks.

Mount Si should be experienced at least once by every hiker. In fact, a significant number of Puget Sound residents do just one hike per year, and these annual hikers almost invariably turn to Mount Si every time. In the early spring, mountain-loving backpackers and climbers use the trail as a tune-up for the coming season. Others come because the trail is one of few that becomes snow-free early in the year. Land managers estimate that Si draws between thirty thousand and fifty thousand visitors a year, making it the most heavily used trail in the state. As a result, on any sunny summer weekend the trail will be crowded--almost to the point of having to take a number and get in line. Really, it's not that bad, and the steep trail soon separates the serious hiker from the casual mall walker. And Si's payoff is incredible: views of the Upper Snoqualmie Valley, the Puget Sound basin, and far beyond.

From the broad parking lot, the trail climbs moderately for 1 mile to the first views of the long hike. Here, at around 1600 feet, you'll find wonderful views from atop a rocky bluff on the side of the mountain. Hikers short on time and stamina could turn around here for a modest 2-mile outing.

As you near the 1.8-mile mark, you'll sweep alongside a small brook, with grassy banks on which to rest. This is Snag Flat--the site of an old burn, as evidenced by the blackened scars on the trunks of many of the old Douglas-firs in the area.

The trail then pushes on, never wavering from its steep ascent, until you finally crest the last slope and step out into the wildflower-filled meadow at the summit, or rather, the summit basin. The true summit of Si is atop the big rock "haystack" that towers over the edge of the meadow. The haystack does sport a scramble path to its summit, but the route is tricky, with incredible exposure (one slip and you'll plummet hundreds--thousands?--of feet). It's best not to attempt the Haystack, especially considering the added danger of other people kicking loose rock down, creating deadly missiles from above. Besides, the views atop the rock are no better than those you'll enjoy from the meadows at its base.

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Recent Trip Reports

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There are 331 trip reports for this hike. See all trip reports for this hike.
Mount Si — Apr 22, 1998 — Bill Sunderland
Day hike
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It was raining at the trailhead. It was raining all the way up. It was raining at the summit. And...

It was raining at the
trailhead. It was raining all the way up. It was raining at the summit. And it was raining on the way down. Still I encountered 50+ people on the trail on this rainy weekday. This well manacured DNR trail is in very good shape. The only problems I saw were lots of social trails cutting switchbacks that people (or at least the ones I saw) like to use on the way down. There was also a surprising amount of litter in the camping/picnicking area at the summit. At the top, the fog was so thick I could just barely make out the haystack. Underwear of the day: L.L. Bean.

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Mount Si — Mar 22, 1998 — Steve F.
Day hike
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(Old Trail) Clear of snow except for a very minor amount at the top. Little Si trail in good shape...

(Old Trail) Clear of snow
except for a very minor amount at the top. Little Si trail in good shape except for a few muddy stretches.

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Mount Si — Mar 09, 1998 — Steve F.
Day hike
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Yeah, I know... everybody's done Mt. Si. Well, Ihadn't done the old trail, and had to give it atry today....

Yeah, I know... everybody's
done Mt. Si. Well, Ihadn't done the old trail, and had to give it atry today. It rained the whole way up and down,except for snow for the last mile. The old trailis in pretty good shape. There were no blowdownsthat would impede progress. The only thing thatimpedes progress is steepness. Yup, only a dayafter Mailbox Peak, I tortured myself again. Ain'tlife fun'! ""No brain, no pain"". Anyway, there wasa couple feet of powder at the top, no view dueto instrument meteorlogical conditions except forthe wonderful snow cover on everything. It's thefirst time I've gotten to kick my own steps on Si.I'd give the old trail the nod for scenery and for *steepness* overthe new trail. BTW, I got lost finding the start,which was an interesting routefinding challengefor this bozo. Found a lot of new sidetrailsup there, though! Looks like some developed rockclimbing areas are established around there.

[Online-Editor's note: I've never climbed Si myself. I'm saving it for myold age.]

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Mount Si Mount Tenerife — Feb 07, 1998 — Steve F.
Day hike
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The trail up Mt. Si is in fantastic shape, with hardly any mud, and is snow-free until just short of...

The trail up
Mt. Si is in fantastic shape, with hardly any mud, and is snow-free until just short of the summit area. Of course, I brought snowshoes the whole way up, so I had to use them! I kept on going to Mt Tenerife on a couple feet of crusty snow. Not much of a view from there, because the trees get in the way, but it's a good snow slog.

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Mount Si — Oct 19, 1997 — Elanthian Ranger Corps
Day hike
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The day dawned drab, coudy, and cold. The ERC nonetheless decided that a short hike was in order....

The day dawned drab, coudy, and
cold. The ERC nonetheless decided that a short hike was in order. The Corpspersons are Seattle natives, yet they had never been on Mt. Si. Yes, their list of summits surveyed includes Stuart, Dickerman, Forbidden, Ellinor, Spire, Three Fingers, even the late Mt. St. Helens, and no Mt. Si. It was time. Discouraged by the absence of Sun-Ra, and lulled by the short drive, short hike, the ERC started out at a leisurely pace. ""We'll have time for chores when we get back home."" A quick stop at the Ranger station yielded directions to the trailhead. Proceed east on the ""old"" highway, SR 10, east of North Bend to Mt. Si road. Go left on this road over the river, past the Little Si trailhead and wind seemingly waaay around to the east side of Si. Leaving the parking lot at about 1:00, the Corps met many folks rolling down the sometimes steep, sometimes rocky trail. Quite a few joggers were encountered, and most folks appeared to be carrying maybe two or three of the ten essentials. Mt. Si is certainly not given the respect that an almost 3,700 foot climb to the top of a 4,200 foot peak deserves. The trail proceeds through deep forest, climbing steadily, until about half way up, it reaches a flat. Several story boards describe an early century fire and impact on the mountain, including never being logged. Interesting and very majestic. At about 3,000 feet the Corps climbed above the cloud cover into brilliant sunshine! Hail Sun-Ra! At about 3.5 miles the trees start to thin, and are smaller, the trail winds through rock outcrops, and finally reaches Haystack Basin. The Navigator proceeded to the summit to complete the survey, and the First Lady remained in the Basin communing with Sun-Ra, a couple of Stellar Jays, and Zuccini bread spread with cream cheese. Spread out below was a sea of clouds, obscuring civilization. Two previous ERC objectives were visible above the cloud cover, Tiger and Ellinor. Mt. Rainier dominated the southern vistas. Reluctant to leave the warm sun and awe inspiring views, and at much too late an hour, the Navigator and First Lady started the trek downward. Surprisingly, they met several groups going UP. Light became increasingly dim as they descended under the cloud cover back in the deep woods. It was finally time to admit the need for illuminating devices, and finish the descent by flashlight. The trip took about 2.5 hours up and just under 2 hours down. The Corps isn't known for speed. ""The chores will just have to wait until another day"", they agreed as they drove out of the parking lot just after 7 pm. Mt. Si is a worthy destination, a considerable workout, the equivalent of many more remote hikes, features a fairly well maintained trail, fabulous view, and there is certainly plenty of help along the way if needed. And, it deserves more respect.

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Mt. Si/ Haystack — Oct 05, 1997 — Pilar
Day hike
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Getting there: I think we all know how to get there! The trail: Well I'm in training for...

Getting there:
I think we all know how to get there! The trail: Well I'm in training for the ""Seattle Marathon"" and I had a day off from school so.... I figured I'd try to run (really a pathetic jog) to the top of Mt. Si (you know cross-training ""just do it!""). I've heard that it has been done so I thought I'd give it a try. Well I started up the trail around three o' clock in the rain and wind. I wore an old pair of hightops, shorts and a windbreaker. The trail is in very good shape and quite ""joggable"" for the most part. You really notice the uphill when you're trying to run. I was able to keep on foot moving in front of the other without stopping. It took fifty-seven min. to get to the basin below the summit and 1 hour & 8 minutes to get to the top of the ""haystack"". It was incredibly windy at the top and it began spitting snow. I remained on top for a good 60 seconds before I began the descent. Enroute I ran into three groups and saw no one on the way out. The whole trip took about two hours. Well see ya on the trail, Pilar.

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Location
Snoqualmie Pass -- North Bend Area
Washington State Department of Natural Resources
3.64 out of 5
Based on 33 votes
Featured In...

Day Hiking: Snoqualmie Region
by Dan A. Nelson and Alan L. Bauer

To buy the full book, including maps, elevation profiles, photos, and more, visit:

A portion of all book sales from the links above benefits WTA and helps protect and maintain our trails.

Information about this hike provided in partnership with Mountaineers Books. Copyright © Dan A. Nelson/The Mountaineers Books

Roundtrip 8.0 miles
Elevation Gain 3150 ft
Highest Point 3900 ft
Features
Mountain views
Summits
Guidebooks & Maps
Day Hiking: Snoqualmie Pass (Nelson & Bauer - Mountaineers Books)
100 Hikes in Washington's Alpine Lakes
Green Trails Mount Si No. 174 and Bandera No. 206

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Driving Directions
(47.4896, -121.7235) Open in new window
Red Marker Mount Si
47.4896 -121.723483333

From Seattle drive east on I-90 to exit 32 (436th Avenue SE). Turn left (north) over the freeway and drive 0.5 mile to North Bend Way. Turn left (west), and in 0.25 mile turn right (north) on Mount Si Road. The large trailhead parking lot is on the left, 2.5 miles down the road.

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