The loop crosses two ridges and a cayon, with three creek runs, but what a view.
Head up Pine Mountain Rd and make a left at the second fork, this will keep you on Pine Mt Rd.
-You will come to a fork around Kent Lake.
-Turn right. Up on the ridge you will come to a crossroads, near the summit of Green Hill.
-Turn right and climb.
-Next turn is onto San Geronimo Ridge Rd, make a right and bear to your right.
-When you get back to the Pine Mt Rd turn left and go back down in reverse.
How to get there:
From HWY 101 take the San Francis Drake turnoff and head west. Turn left onto Bolinas-Fairfax Road and go about 3 miles to the trailhead of Pine Mountain Road. The trail is on the right parking is on the left.