South Bessemer & Moolock Mountains

A nice winter scramble or long snowshoe trip to high points on the ridge that extends from Mount Si, Teneriffe Mountain, Green Mountain. Both routes re mostly on logging roads of which the upper sections are snow covered in the winter. Each route is 13+ miles round trip and 4,000+ feet of elevation gain.

getting there

From I-90 take Exit 34 near North Bend and head north on SE Edgewick Rd. Turn right onto SE Middle Fork Rd and follow it to where the pavement ends, the Mailbox Peak trailhead.  Continue on for ~4 miles to the Bessemer CCC Road-Trail trailhead.


South Bessemer Mountain (5,028 ft)

Follow the Bessemer CCC Road-Trail to the summit of South Bessemer Mountain. It's 13.6 miles round trip with 4,097 feet of elevation gain.

Moolock Mountain (4,965 ft)

Follow the Bessemer CCC Road-Trail to the saddle between Moolock and  South Bessemer Mountain.  Turn left and follow 4WD road to the east ridge of Moolock.  Ascend the east ridge to the summit. It's 13.2 miles round trip with 4,343 feet of elevation gain.


  • There is very little avalanche danger and no boulder fields (which can be aggravating and dangerous  when there is not enough snow to fill in the gaps between them).

    FOr leaders

    Permit information

    As of 2017, the Snoqualmie Ranger District considers Mountaineers trips and courses to be "nominal use". Leaders should print and copy this designation letter to show rangers they may see on trail or carry a digital copy on their phone.

  • Difficulty: Very Strenuous, Winter Scramble
  • Length: 13.6 mi
  • Elevation Gain: 4,097 ft
  • 5,028 ft
  • Green Trails Mount Si NRCA No. 206S
  • USGS Mt Si
  • USGS Lake Phillipa

Upcoming Activities

There are no activities scheduled at this location.

Trip Reports

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.

  • South Bessemer Mountain
  • South Bessemer Mountain (winter)
  • Moolock Mountain
  • Moolock Mountain (winter)

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