You'll pick up the singletrack to Diaz Ridge on the north side of Highway 1 about 0.25 miles west of the peak where Highway 1 meets Panoramic Highway. There is a pullout there to park or turn around and park on the south side of the road.
After a 0.25 mile climb, you'll continue on to the Diaz Ridge Trail
. The trail starts as a fast, flowy singletrack (with a small climb in the middle), but gets more technical and switchback loaded as you approach Muir Beach. To your right will be views of Mt. Tamalpais and Muir Woods. As you progress down the trail, you'll get views of the Pacific Ocean and Muir Beach. Off to your left is the Green Gulch Zen Center Farm.
Diaz Ridge trail ends at Highway 1 and the Pelican Inn, which is a great place for brunch or a pint of Guinness before you climb back up or continue on to other trails in the area, such as Deer Park Fire Trail or Middle Green Gulch