Overview Boulder Oaks offers equestrian and family sites in the scenic Cleveland National Forest, about an hour away from San Diego, California. Visitors are drawn here for the convenience of horseback riding and day hiking on the Pacific Crest Trail, as well as picnicking in the beautiful mountain setting. Recreation The national forest lends itself well to horseback riding and hiking. Boulder Oaks has direct access to a segment of the 2,650-mile Pacific Crest Trail, a national scenic trail th