Mt. Williamson via Islip Saddle

The trailhead is immediately off of Angeles Crest Highway CA-2 at Islip Saddle.  It's just a touch over 2 miles to reach the summit, through which you'll be hiking among the pine tree forest practically the entire way up (part of this trail doubles as the Pacific Crest Trail).  The summit is largely devoid of trees, which provides for excellent views in all directions.  The trail continues if you're interested in exploring more of the area, otherwise, simply retrace your steps back to the parking lot.