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Mount Si, Washington

4167 feet, 1270 meters

Alternate Name(s)Kelbts
Peak TypeFamous Peak, but not High Point
Latitude/Longitude (WGS84)47° 30' N; 121° 44' W
47.507817, -121.739877 (Dec Deg)
594889E 5262368N Zone 10 (UTM)
CountryUnited States
State/ProvinceWashington
County/Second Level RegionKing
Links

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Lists that contain Mount Si:
     Smoot's "Climbing Washington's Mountains" 100 Peaks (Rank #100)
     Famous Peaks that are not High Points (Rank #13)

Selected Trip Reports from this site:
     1980-05-01 by Fred Beavon
     1992-09-12 by Austin Smith
     1994-12-04 by Scott Cockrell
     2003-06-01 by Brian Bury
     2004-05-19 by Graham Priestley
     2007-03-05 by josh Welbaum
     2007-03-10 by Erik Landahl
     2007-04-01 by Erik Landahl
     2007-04-06 by Zachary Perry
     2007-05-10 by Steve Ottenad
     2007-06-08 by Corey Ostby
     2008-01-01 by josh Welbaum (Unsuccessful)
     2008-04-20 by Darren Keegan
     2008-04-24 by Schmidt Altitude
     2008-05-01 by keith siers
     2008-05-07 by Trey Pinkerton (Unsuccessful)
     2008-05-09 by Trey Pinkerton
     2008-05-13 by Trey Pinkerton
     2009-01-17 by Trey Pinkerton
     2009-10-10 by Greg Chappell

View ascents of peak by registered Peakbagger.com members.

Nearby Peak Searches:
     Radius Search - Nearest Peaks to Mount Si
     Elevation Ladder from Mount Si
     Prominence Ladder from Mount Si


Mount Si is a well known landmark and a very popular hiking destination, located in the Cascade foothills just east of Seattle. The mountain looms over the town of North Bend, its steep west face rising thousands of feet to craggy pinnacles. As the first high, jagged summit a traveler sees while heading east on I-90, it is an integral part of the rampart that the Cascade Range presents to the Puget Sound area.

A well-graded trail climbs about 3300 vertical feet (from 600 to 3900 feet) in 4 miles to just below the summit "haystack". This is an extremely popular and crowded trail, with estimates of 80,000 - 100,000 users per year, an average of 250 per day (obviously higher than that on sunny summer weekends). Fortunately, a 1993 reconstruction of the trail by the state allows it to handle the load quite well. The ascent is continuously steep and almost entirely in deep forest, with few views between the trees. But near the top, just below the haystack, rocky crags provide spectacular vistas westward over North Bend and the Snoqualmie Valley to Seattle skyscrapers, Puget Sound, and the Olympic Mountains.

Many hikers scramble up the haystack to the very summit, an exposed, hands-needed semi-climb that is not for the acrophobic. The thousands that regularly ply this route have already dislodged all the rotten or loose rock long ago, leaving a nice staircase with good handholds. Still, people have been killed in falls on this short pitch, so be very cautious and don't try it in any kind of bad weather. The view is not too much better at the end of this 200-foot scramble.

In strict topographic terms, Mount Si is not very prominent at all, despite its very impressive west face. To the east, a high, wooded saddle connects Mount Si to an unnamed 4560 peak that is almost 400 feet higher than its famous satellite summit, and beyond that the ridge runs to higher peaks like Mount Teneriffe, Green Mountain, and other forested bumps of little renown.

Mount Si was named for Josiah "Uncle Si" Merritt, an early local settler. It is pronounced "Mount Sigh", just like the middle syllable of "Josiah".

Google Maps Dynamic Map
Web Map Links
Terraserver-USAAcme MapperTopoQuestMyTopo
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RangesContinent: North America
Range2: Pacific Ranges
Range3: Cascade Range
Range4: South Washington Cascades
Range5: Alpine Lakes Area
Range6: North-Middle Forks Snoqualmie
Drainage BasinsSnohomish
Puget Sound
Pacific Ocean
OwnershipLand: Washington State Department of Natural Resources
Topo MapMount Si 47121-E6 1:24,000
ProminenceClean Prominence: 247 ft/75 m
Optimistic Prominence: 287 ft/87 m
Line Parent: Blowdown Mountain
Key Col: 3920 ft/1195 m  (40 foot contour)
Col elevation in range between 3880 and 3920 feet.
    Topo Map: Mount Si 47121-E6 1:24,000
    Key Col Lat/Long: 47° 31' N; 121° 44' W
    Key Col Map Links:
Terraserver-USAAcme MapperTopoQuestMyTopo
Bing MapsMSN/EncartaGoogle Maps 
Isolation0.84 mi/1.35 km
Nearest Higher Neighbor in the PBC database:
    Blowdown Mountain  (ENE)
Isolation distance is based on NHN and is slightly overstated.
Route #1 Maintained Hiking Trail: Mount Si Trail
Trailhead: Mt. Si Trailhead 660 ft/201 m
Vertical Gain: 3507 ft/1069 m
Distance (one way): 4 mi/6.44 km



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