| Opened | 1930 - 1934 | Tracks | Single track |
| Mapion | Major stations | Connecting lines | Km | City | Prefecture |
| Map | Ōhara | JR East: Sotobō | 0.0 | Isumi-shi | Chiba |
| Map | Ōtaki | | 15.8 | Ōtaki-machi | |
| Map | Kazusa-Nakano | Kominato: Kominato Tetsudō | 26.8 | Ōtaki-machi |
| Type | Origin - Major stops - Destination | Trains per day | Fastest train | Average speed |
|---|---|---|---|---|
| Local Futsū 普通 | Ōhara - Kazusa-Nakano | 12 | 47 min | 34 km/h |
| Ōhara - Ōtaki | 4 | 27 min | 35 km/h | |
| Ōtaki - Kazusa-Nakano | 2 | 19 min | 35 km/h |
