Castle Oaks Golf Club sits in the Sierra Nevada foothills near Ione, California, about 40 miles southeast of Sacramento. Designed by Brad Benz and opened in the late 1990s, the course occupies rolling terrain characterized by mature oak trees, natural rock outcroppings, and elevation changes typical of the Gold Country region. The layout takes advantage of the property's natural topography, routing holes through corridors of native oaks and around granite formations that give the course its name. The design incorporates the area's historic mining heritage into its setting, with the course built on land that once saw Gold Rush activity. Benz's routing works with the existing landforms rather than imposing dramatic earthmoving, allowing the native landscape to define much of the playing character. Fairways move through varied terrain, with some holes playing across open meadows and others threading through tighter, tree-lined passages. Castle Oaks serves as a daily-fee facility accessible to public play, drawing golfers from the Sacramento metropolitan area and travelers exploring the Sierra foothills. The course offers a regional alternative to busier Sacramento-area layouts, providing a more secluded setting amid the natural beauty of the Gold Country. The combination of elevation change, mature vegetation, and rock features creates visual interest throughout the round, while the routing provides a range of hole lengths and strategic options suited to different skill levels.