From the Castle Rock State Park website:

The Castle Rock State Park (SP) staff is currently developing a management plan for the park’s system of roads and trails. The park has a number of official roads and trails available for use, including the northern most trailhead for the Skyline-to-the-Sea Trail - a 30-mile, three-day trail hike. 

The Castle Rock SP General Plan (2000) recognized that "some of the old roadways now serve as trails and are the primary facilities that exist for the public’s use. Random off-trail use is causing soil erosion, with loss of vegetation and degradation of wildlife habitat. Therefore, existing activities and potential use areas needed to be evaluated relative to resource significance, and guidelines developed for appropriate management and use. Castle Rock State Park is also interconnected within a larger system of regional trails and open space recreation areas. State park trails connect to regional trails in the Sanborn-Skyline County Park, Saratoga Gap Open Space Preserve, San Lorenzo Valley Water District and Big Basin Redwoods State Park, where they extend to the Pacific Ocean and to the San Francisco Bay."

The General Plan further states that "A Unit Trails Plan should be prepared that strives to create opportunities for visitors to enjoy the unique and diverse topography, geology, biotic communities, and scenic views at Castle Rock State Park. The actual location, distance, and use of future trails should be governed by this plan."

The purpose of the Road and Trail Management Plan is to provide specific direction for the long term construction, maintenance, and management of the roads and trails system.  Specifically, the plan will:
• Determine which roads and trails should be maintained, removed, and/or enhanced. 
• Identify which of the unofficial trails should be removed and which should be made official.  
• Determine the types of trail uses (e.g. hiking, biking, and/or equestrian) that are appropriate on each road and trail.  
• Identify those roads and trails that lead to damage of the natural and cultural resources of the park, for example a trail that passes through an area of sensitive natural resources, and need to be re-routed and/or reconstructed.  
• Identify trail connections necessary to create trail loops and/or connect to trails outside the park.  
• Identify  opportunities for new trails, where appropriate 
• Identify necessary trail facilities, such as restrooms, parking, and drinking water

Castle Rock Draft Trails Plan (2010)

A committee of knowledgeable citizen volunteers from the several user and interest groups, as well as park staff, formed the Castle Rock Citizens Trails Committee in 2000.    This group worked with park staff and stakeholders between 2000-2010 to develop the Castle Rock State Park Draft Trails Plan.  The information and recommendations contained in this draft plan will be extensively evaluated during in this planning effort.