| Opened | 1911 - 1914 | |
| Owner change | 1989 | JR > Watarase Keikoku Railway |
| Tracks | Single track |
| Mapion | Major stations | Connecting lines | Km | City | Prefecture | |
| Map | Map | Kiryū | JR East: Ryōmō | 0.0 | Kiryū-shi | Gunma |
| Map | Map | Aioi | Tōbu: Kiryū | 3.1 | Kiryū-shi | |
| Map | Map | Ōmama | | 9.3 | Midori-shi | |
| Map | Map | Ashio | | 42.8 | Nikkō-shi | Tochigi |
| Map | Map | Matō | | 44.1 | Nikkō-shi |
| Origin - Major stops - Destination | Trains per day | Fastest train | Average speed |
|---|---|---|---|
| Kiryū - Matō | 10 | 1h22 | 32 km/h |
| Kiryū - Ashio | 1 | 1h16 | 34 km/h |
| Kiryū - Ōmama | 7 | 13 min | 43 km/h |
| Ashio - Matō | 2 | 3 min | 26 km/h |
