Located at the north end of San Diego County, Oceanside offers everything from beautiful beaches along 3.5 miles of the coast to communities nestled throughout the 42.17 miles of the city. Camp Pendleton, located in North Oceanside, is home to the largest Marine Corp Amphibious training facility.  Oceanside Harbor enjoys Harbor Village with shops, restaurants, kayak rentals and paddle board lessons.  Multiple golf courses, hiking trails, and much more add to the appeal of this diverse city.