Karafuto East Line: Otomari Port Station - Koton Station (414.4km) : Branch line Ochiai Station (Karafuto-Cho) - Sakaehama Station (10.3km) : Freight Line Sakaehama Station - Sakaehama Kaigan (coast) Station (1.8km)
樺太東線：大泊港駅-古屯駅(414.4km)：支線落合駅(樺太庁)-栄浜駅(10.3km)：貨物線栄浜駅-栄浜海岸駅(1.8km)