Mount Williamson via Pacific Crest Trail

based on 56 tracks & routes #40 hike out of 461 in
4.7 mi
2 hrs 3 min
1,550 ft
Elev Gain


This is a moderate out and back trail to Mount Williamson in Pleasant View Ridge Wilderness.

This trail goes by Islip Saddle Day Use Area and Trailhead.

    Rate this Hike

    1 year, 5 months ago
    Hiked on 12/28/22 from Hwy 2 PCT junction closest to tunnels. Put on micro spikes for some of the steeper sloped, snow covered parts of the trail going up to the southeast summit of Mt Williamson. Some parts of the trail in the burn area were washed out by debris flows and then recently covered in snow. Once on Pleasant View Ridge, we had great packed powder snow conditions for the whole hike on a day of very clear but windy weather. We followed the ridgeline to the northeast summit of Mt. Williamson (official HPS peak) and then to the Pleasant View Ridge Summit east high point (8248 ft). Had to put on crampons to descend to the saddle before Peak 8160 and then continue climbing straight up the ridgeline up to its summit. Next was the steepest part of the hike, the straight line backbone descent of Peak 8160 towards Box Car Ridge where the snow held crampon points well, decreasing the chances of a long slide for life ride down either the partly iced NW face or the shaded NE chute. From here up to the summit of Pallet Mountain was back to boots only, very scenic hiking with spectacular views of the desert from the summit. Returned to the trailhead the same way at sunset with good snow, stopping at several great vista points. A great ridgeline hike with a little work required - tracked just under 11 miles and 3800 ft. Definitely want to come back for the western peaks on this trail before spring!
    ★ ★ ★ ★ ★

    1 year, 7 months ago
    Roads closed due to snow ❄️ no entry
    ★ ★

    4 years, 8 months ago
    ★ ★ ★ ★

Public Tracks

Wrightwood Deadhead 9 years, 1 month ago
Mt Williamson 4/30/15 10:19:52 AM
Park at the parking lot on the North side of Hwy 2 at Islip Saddle. Trailhead is just behind the restroom and head up the mountain.
Ramona Jervay 7 years, 8 months ago
Mt. Williamson (10/1/16, 9:40:07AM)
With GLS, Gale & Amanda leaders. Learned the wonders of using hiking poles. Went to REI and bought a pair💫
mark.nelson 3 years, 10 months ago
tonyk1973 3 years, 11 months ago
Marc Machin 4 years, 8 months ago
Jerry Grenard 6 years, 8 months ago
jhagar1 7 years, 8 months ago
Paul Gacek 7 years, 11 months ago