Tres Arroyos is located in La Plata city, Argentina at the -38.3739, -60.2798 coordinates. Distance from Tres Arroyos to other cities. are listed below, click on the city name to find distance between. Distance from Tres Arroyos to Mar del Plata 241 km, to Quilmes 444 km, to Moron 439 km. The green marker indicates the location of Tres Arroyos.