Located in the central-northern side of Cilento, by the Tyrrhenian Sea, San Marco is extended from the national road 267, at the zone of Torretta, to the coast nearby the park of Licosa. It borders with the other frazione of Santa Maria and is 4 km far from Castellabate, 15 from Agropoli, 6 from Case del Conte, 11,5 from Agnone Cilento and 18 from Acciaroli. It counts a port that is served by hydrofoils[3] for passenger transport.[4][5]