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'. Follow the prominent ridge ~0.5 W of the pass to the summit. Tyndall is typically done with Mt Williamson in a 4-5 day trip. A permit is required- either reserved 6 months ahead or take your chances with a walk in day of your climb.

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 Fourteeners- Porcella and Burns
Relevant Maps USGS Mt Williamson Quad