From Shepard's Pass trail head follow the trail ~7 miles to Shepard's Pass at 12000'. This can be broken up into 2 days by staying at Anvil Camp at 10800'. Descent 300' into Williamson Basin- camping available near the lakes. Ascend the west face to black water stains and enter a 1000' chute. At the top of the chute, climb 1 pitch of 3rd class to gain the summit plateau. A permit is required- either reserved 6 months ahead or take your chances with a walk in day of your climb. Williamson is usually done with neighboring Mt Tyndall.

Other Information
Driving Distance from Portland 750 miles
Driving Time from Portland 13 hours
Expected Duration Car to car in two or more days
Relevant Books Climbing California's Fourteeners Porcella and Burns
Relevant Maps Inyo National Forest Williamson Quad