San Clemente State Beach. Since 1937 San Clemente has been one of the most popular beaches in California. A dramatic setting and invigorating air satisfy its many visitors, whatever their interest, energy level or state of mind. The mile long beach stretches between the curling ocean surf and the foot of a steep bluff. Midway between Los Angeles and San Diego, the park attracts water sports enthusiasts and those seeking respite from the inland heat or an escape from nearby metropolitan areas.