Mount Si Old Trail

A strenuous, 7 mile hike with 3,300 ft in elevation gain. The trail features part of the Boulder Garden Loop, a steep old trail for a good workout and views of the Upper Snoqualmie Valley and Puget Sound.

getting there

Take Exit 32 off of I-90 near North Bend. Turn left, crossing over I-90, and follow 468th Ave NE to SE North Bend Way and turn left.  Turn right onto SE Mount Si Road and then left into the Litte Si/Exit 32 Parking Lot shortly after crossing the bridge across the Middle Fork Snoqualmie River.

on the trail

Mount si (3,900 ft)

A moderately strenuous 7-mile round trip hike with 3,300 feet of elevation gain

Hike the Little Si Trail and take either the southern or northern leg of the Boulder Garden Loop Trail to the "old connector trail." Continue to the intersection with the Mount Si "Main" Trail, turn right and continue to the top.

scramble routes

blowdown mountain (4,560 ft) and crater lake mountain (4,351 ft)

a 12-mile round trip scramble with 4,400 feet of elevation gain, difficulty: strenuous 4, technical 2

From top of Mount Si continue on the path and road to where that road terminates northwest of Mount Teneriffe. Ascend past 4,440 ft, then follow the ridge northwest, descend west to a saddle, and then ascend continuing west to the summit of Blowdown Mountain. The views are not great, but in winter, this is all that daylight may allow. From Blowdown Mountain, travel north, descending to a saddle and then ascending to Crater Lake Mountain.

Dixie Peak (4,606 ft)

a scramble with 4,400 feet of elevation gain, difficulty: strenuous 4, technical 4

From top of Mount Si continue on the path and road to where that road terminates northwest of Mount Teneriffe. Ascend past 4,440 ft, then follow the ridge northwest and then north to Dixie Peak.

Information for LEADERS

  • Scheduling & Permits

    • If you are scheduling this as a non-course related activity, please limit your group size to the default party size. The maximum party size is for use by course field trips only, and includes both students and instructors. Group size maximums do not reflect how course field trips are run (in smaller groups of students and instructors), but allow for course leaders to register the course in our system.
    • If you are scheduling a course field trip, please contact our Member Services Team to confirm the field trip and any permitting regulations.
  • Difficulty: Strenuous
  • Length: 7.0 mi
  • Elevation Gain: 3,300 ft
  • 3,841 ft
Map
  • Green Trails Mount Si NRCA No. 206S
Activities

Upcoming Activities

There are no activities scheduled at this location.

Trip Reports
Titles

This is a list of titles that represent the variations of trips you can take at this route/place. This includes side trips, extensions and peak combinations. Not seeing a title that fits your trip? Log in and send us updates, images, or resources.

  • Mount Si and Teneriffe Traverse
  • Blowdown Mountain
  • Crater Lake Mountain
  • Crater Lake & Blowdown Mountains
  • Dixie Peak
Resources

There are no resources for this route/place. Log in and send us updates, images, or resources.

Tags:

Jeffrey Hunt
Jeffrey Hunt says:
Wed, Dec 7, 2016 10:59 AM

Jeff's Mentor Group Conditioner Hike to assess fitness. By next spring the goal is Old Si trail in 90min with 20%BW.

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