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.

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
  • Red Marker
    47.486748, -121.753814
    47.4867476913 -121.75381422
  • Red Marker
    47.506038, -121.739346
    47.5060382155 -121.739345531
 
Activities

Upcoming Activities



Day Hike - Mount Si Old Trail

Day Hiking Trip
This is a conditioner for the Cebe Sig. If not full by 02/21 then others
Difficulty: Strenuous
Sun, Feb 25, 2018
No Prerequisites, Leader's Permission Required
0 participants 1 leader
Registration closed Feb 23
Foothills Branch

Intermediate Fitness Test - Mount Si Old Trail

Day Hiking Field trip: Intermediate Alpine Climbing Package
Mandatory fitness test for students in the intermediate package
Difficulty: Strenuous
Thu, Mar 1, 2018
No Prerequisites, Leader's Permission Required
2 participants 0 instructors
Registration closes Feb 27
Seattle Branch

Day Hike - Mount Si Old Trail

Day Hiking Trip
A conditioner hike for the Tacoma Basic Climbing Course.
Difficulty: Strenuous
Sun, Mar 4, 2018
No Prerequisites, Leader's Permission Required
10 participants 0 leaders
Registration closes Feb 28
Tacoma Branch

Conditioner 1 - Mount Si Old Trail

Day Hiking Field trip: Basic Climbing Course
Course Required Conditioner
Difficulty: Strenuous
Sat, Mar 10, 2018
No Prerequisites, Leader's Permission Required
0 participants 0 instructors
Registration closes Mar 8
Tacoma Branch

Seattle SIG Practices and Conditioners - Mount Si Old Trail

Climbing Field trip: Basic Alpine Climbing Course
SIG activities, including skill practices conditioning trips
Difficulty: Strenuous
Sun, Mar 11, 2018
No Prerequisites
4 participants
Registration closes Mar 9
Seattle Branch

Conditioner 1 - Mount Si Old Trail

Day Hiking Field trip: Basic Climbing Course
Course Required Conditioner
Difficulty: Strenuous
Sat, Mar 24, 2018
No Prerequisites
1 participant on waitlist 1 instructor
Registration closes Mar 21
Tacoma Branch

Day Hike - Mount Si Old Trail

Day Hiking Trip
This is a conditioner hike priority to Tacoma branch until March 10th. Requirement of 30lbs
Difficulty: Strenuous
Sat, Mar 24, 2018
No Prerequisites
6 participants 2 leaders
Canceled
Tacoma Branch

Day Hike - Mount Si Old Trail

Day Hiking Trip
Conditioner for Tacoma Basic students
Difficulty: Strenuous
Sat, Apr 7, 2018
No Prerequisites
10 participants 2 leaders
Canceled
Tacoma Branch

Conditioner 2 - Mount Si Old Trail

Day Hiking Field trip: Basic Climbing Course
Course Required Conditioner
Difficulty: Strenuous
Sat, Apr 7, 2018
No Prerequisites
5 participants 1 instructor
Registration closes Apr 5
Tacoma Branch

Day Hike - Mount Si Old Trail

Day Hiking Trip
A conditioner for the Tacoma Basic Climbing Course.
Difficulty: Strenuous
Sat, Apr 14, 2018
No Prerequisites, Leader's Permission Required
10 participants
Registration closes Apr 25
Tacoma Branch
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
Resources

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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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