| Opened | 1915 - 1935 |
| Tracks | Single track |
| Mapion | Major stations | Connecting lines | Km | City | Prefecture | |
| Map | Map | Kobuchizawa | JR East: Chūō Hon (East) | 0.0 | Hokuto-shi | Yamanashi |
| Map | Map | Nobeyama | | 23.4 | Minamimaki-mura | Nagano |
| Map | Map | Koumi | | 48.3 | Koumi-machi | |
| Map | Map | Nakagomi | | 65.5 | Saku-shi | |
| Map | Map | Sakudaira | JR East: Nagano Shinkansen | 67.4 | Saku-shi | |
| Map | Map | Komoro | Shinano: Shinano Tetsudō | 78.9 | Komoro-shi |
| Type | Origin - Major stops - Destination | Trains per day | Fastest train | Average speed |
|---|---|---|---|---|
| Local Futsū 普通 | Kobuchizawa - Komoro | 9 | 2h08 | 37 km/h |
| Kobuchizawa - Koumi | 2 | 1h07 | 43 km/h | |
| Koumi - Komoro | 8 | 58 min | 32 km/h | |
| Nakagomi - Komoro | 5 | 26 min | 31 km/h |
