Mount Si Main Trail


Day Hike - Mount Si Main Trail

This is a conditioner! We will do a Double Si: up the New Trail, down the Old Trail, up the Old Trail, and down the New Trail for a 15 mile hike with 6,450 feet of elevation gain.

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/Very Strenuous
  • Challenging
  • Mileage: 15.0 mi
  • Elevation Gain: 6,450 ft

We will meet at the New Si Trail Parking lot, dressed and ready to go at 7:30.

This will be a very strenuous trip, but we will try to have as much fun and eat as many summit treats as we can!  Cookie and candy lovers take note.  We will treat the first leg up to the clearing as a timed conditioner, seeking to reach it by 2 hours with a pack that is 20% of your body weight or 25lbs, whichever is greater.  Once the group has all made the first summit, we will head down the Old Trail, hit the parking lot and restrooms, then return to the summit via the Old Trail and then to the original parking lot via the new trail.  Legs 2-4 will be social and fun.  Microspikes required.  We might need snowshoes, as well.

From the Basic Alpine Climbing Handbook: You are required to pass a conditioning evaluation by the last scheduled field trip in May to be eligible to go out on real climbs. This evaluation typically involves the equivalent of hiking 3,200' over 4 miles in under 2 hours, carrying 20% of your body weight or 25 lbs (whichever is greater). Climbing Conditioning Benchmark: At a minimum, be able to hike with a full day pack (ca. 25 pounds) up the Mt. Si trail (4 miles, 3400' gain) in under 2:00. Being able to do it twice is good preparation for the more strenuous basic climbs.


Mount Si Main Trail

Required Equipment

Required Equipment

The Ten Essentials

  1. Navigation
  2. Sun protection
  3. Insulation (extra clothing)
  4. Illumination
  5. First aid supplies
  6. Fire
  7. Repair kit and tools, including knife
  8. Nutrition (extra food)
  9. Hydration (extra water)
  10. Emergency shelter
  11. Microspikes
  12. Sense of fun to get us through a long day
Trip Reports