Hollister Hills SVRA is a 6,800-acre SVRA park and was the first SVRA made by the California parks department. The park is divided into three parts, the Upper Ranch, Lower Ranch, and Hudner Ranch. The Lower Ranch is for dirtbikes. While the Upper Ranch and Hudner Ranch are for 4x4s, visitors should stop first at the ranger station in the Lower Ranch to pay the $5 entry fee and get a map of the trails.
Hudner Pass is an easy dirt road that takes you along the entirety of Hudner Ranch. The entrance to Hudner Ranch is blocked by a locked gate, and the code is given to you by the ranger after you pay the entry fee. Hudner Pass takes you by the trailheads of all of the other trails in Hudner Ranch, and while the Hudner Pass can be completed in 2WD, the other trails in the ranch require 4WD and high clearance. Camping is available at Hudner Pass Campground. However, a reservation is required.