One of my favorite areas to ride.
Turn right onto Placerita Cyn Rd as you leave the Ranch. Ride 4.4 miles to the intersection of Sand Cyn. Turn right. This turns into Little Tujunga Canyon Rd. You can ride its entire length (14.3 miles) Or however much you want to. If you go up Bear Divide Rd (the right turn at the top of the 1st summit from the intersection,) you'll get this view of Little Tujunga Cyn Rd:



Bear Divide ends at the top of the hill about 5 miles up. You get a fantastic view of the LA Basin on one side - walk a few feet and the entire Antelope Valley can be seen from the other. But you have to earn it.

Have fun.