Ryan,
I'm in the LA area and shoot at a couple ranges. Triple B is the largest, with many trap and skeet fields, a two man flurry field, a long range field, and sporting clays with many stations. They are located in South El Monte, about 15 minutes from LA.
Moore-n-Moore is another sporting clays range with a much smaller range, but always very interesting as it is built on the side of a hill. It is located on the north end of the San Fernando Valley, about 20-30 minutes from LA.
Oak Tree is located a bit further north, maybe another 10 minutes. They have a sporting clays range on a big hill with many trees around it, a few skeet and trap fields.