Subatağı is a neighborhood in Karasu District, in Sakarya Province, Türkiye. Subatağı lies at 154 m above sea level, 1.1 km from the Akçakoca Dağları mountains. It has 432 inhabitants. The nearest city is Ferizli, 10.8 km to the west. Among the landmarks around are Sangarius Bridge (33 km) and SM UC-13 (22 km).