CHS 2 Hike - Mount Si Old Trail

Field trip: Conditioning Hiking Series

CHS 2 Hike - Mount Si Old Trail

Aaahhh Si! Old Si is the trail less traveled. More scenic than the popular New Si, Old Si offers solitude in a lush forest of verdant greens filled with mosses, ferns, majestic boulders, and towering conifers. Although this mountain is “novice friendly,” this trek will be challenging as we will hike over 3500 feet in about 3 miles. On a clear day, we will be rewarded with views of Rainer, Snoqualmie Valley, and the Cascades at the summit. Go Getter Hike - CHS hike led at a CHS 2 pace (2.0-3.0 mph)

COVID-19: Learn about our most up-to-date guidance for participants and leaders on our COVID-19 Response page. All participants and leaders must agree to the COVID-19 Code of Conduct before participating in this Mountaineers activity.
  • Strenuous
  • Challenging
  • Mileage: 8.0 mi
  • Elevation Gain: 3,300 ft
  • Pace: 2.0-3.0 mph

Location:  Little Si Trailhead

Meeting Time:  7:45am   Boots on the Trail:  8:00am

 Directions: From I-90: 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 Little Si/Exit 32 Parking Lot shortly after crossing the bridge across the Middle Fork Snoqualmie River.

Parking Pass:  Discover Pass

 Carpooling:  Meet at Tibbetts Valley Park in Issaquah at 7:00am. Load up and depart by 7:15am. It’s about 20-30 minutes drive to the trailhead.


Weather: Please check the local weather the night before and the morning of the hike at the NWS here.

If the trail conditions and or the weather is unfavorable, the hike will be canceled or reschedule for a different location.

Please be ready to wear a mask if you are carpooling.

 Sturdy water-proof footwear and trekking poles are recommended.  

 Facilities are available at Little Si Trailhead

Some mild scrambling is necessary to make it up and over the rocky “false summit” and popular lunch spot. We will take the stone steps cemented into the rocks to make it up and over the rocks.

 We will stop for a well-deserved bunch break at the base of the haystack. Hopefully, we will be rewarded with views of Rainer, Snoqualmie Valley, and the Cascades. Please bring small, energizing snacks that are easily consumed during our short 5-10 minute breaks or snacks that you can eat on the go!

 My co-leader, Phoebe, and I, are looking forward to sharing this challenging lollipop loop hike with you. More details about this hike will be provided in the “Hello Hiker” email.


Mount Si Old Trail

Required Equipment

Required Equipment

Ten Essential Systems

  1. Navigation (map & compass)
  2. Sun protection (sunglasses & sunscreen)
  3. Insulation (extra clothing)
  4. Illumination (headlamp/flashlight)
  5. First-aid supplies
  6. Fire (waterproof matches/lighter/candle)
  7. Repair kit and tools
  8. Nutrition (extra food)
  9. Hydration (extra water)
  10. Emergency shelter (tent/plastic tube tent/garbage bag)
Trip Reports