Alpental Ski Area


Backcountry Ski/Snowboard - Alpental Ski Area

Foothills AIARE Level 1 instructors ONLY to scout the winter route to Source Lake, head up through Big Trees and find a spot to practice snow profiles.

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.
  • Moderate
  • Mileage: 6.0 mi
  • Elevation Gain: 2,300 ft

Be ready to leave the Source Lake trailhead in Alpental lot 4/upper lot at 8:00 am.  

For the 20/21 winter season Alpental is piloting a new passholder only program for Lot 4 at Alpental. The uppermost parking lot at Alpental will be for passholders only this winter. Passholders should be prepared to show their season pass as they approach the upper lots - only one pass required per vehicle. All non-ski area guests and backcountry travelers must park in the Lower Lot, the first parking lot on the left at the Alpental 'Welcome' sign.

Complete a trip plan in your AIARE field book and bring your snow science kit.


Alpental Ski Area

  • Green Trails Snoqualmie Pass No. 207

    Green Trails Snoqualmie Pass Gateway No. 207S

    USGS Snoqualmie Pass
  • See full route/place details.
Required Equipment

Required Equipment

  • The Ten Essentials
  • Boots, skis/snowboard, poles
  • Climbing skins (or other method to travel uphill on snow)
  • Avalanche shovel (metal blade)
  • Avalanche beacon
  • Avalanche probe
  • AIARE field book
Trip Reports