You can begin this trail by parking at the end of Meadow View Lane, or on weekends and when school or school events are not in session, at Carpinteria High School toward the west end of the parking lot in front. From the Trailhead...
Follow the brown signs as you wind along side the high school and through the avocado orchards. You will be hemmed in by fencing on both sides.
After a bit you will emerge onto real trail without fencing. You really cannot get lost as the trail is marked well to keep you off private property.
Near the end there is a sign pointing the way to Franklin's bench. The trail proceeds about a quarter mile beyond on the dirt road you have been walking. The path to Franlin's bench is just a little aside to access the bench, and only a few yards long.
Currently, the trail ends at a locked gate with no tresspassing signs. This is the end of phase 1 of building the trail. The plan is to complete the trail to the summit where it currently continues down toward Jameson Reservoir on the Santa Ynez River.
Signs say the current distance is 2.5 miles for a total of approximately 5 miles round trip. It seemed a little shorter than that to me. To get back to your car, return the way you came.