The beaches of Castiadas extend for about 15 km. From north to south. The first is Santa Giusta beach, with the characteristic rock in the form of a whale (Peppino Rock), then alternating between rocks and inlets you come to Cala Sant’Elmo and further on Su Cannisoni and San Pietro (or Marine Cove). A little further south, between rocky promontories and dunes, is the magnificent Cala Sinzias beach that extends for more than a kilometre. Following the Provincial road No 18 towards Villasimius, you reach Cala Pira with the Island of Serpentara in the background.