Castle Rock State Park is suitable for many activities. There are two walk-in campgrounds for overnight hikers, many trails for day-hikes, rock climbing routes, and picnic areas. Dogs are not allowed on the trails or in the campgrounds, and horses allowed only on designated trails.
Under Governor Brown's current budget proposal this park will be closed. This doesn't necessarily mean that visitors couldn't enter the park, but it does mean that rangers will no longer staff the park. If the city of Santa Cruz doesn't step in, garbage collection will cease and crime may increase without the presence of park rangers.
California Assembly Bill 42 was signed into law on October 5th, 2011. This bill allows state parks to enter into operating agreements with non-profit organizations. The Portola and Castle Rock Foundation has been formed to help support Portola and Castle Rock State Parks.
On March 14th, 2012 the park was removed from the state park closure list for a one-year reprieve based on a $250,000 donation by the Sempervirens Fund.