| Traction | 20 kV 60 Hz AC | Kumamoto - Higō-Ōzu |
| Non-electric | Higō-Ōzu - Ōita |
| Opened | 1914-1928 | Tracks | Single track |
| Mapion | Major stations | Connecting lines | Km | City | Prefecture | |
| Map | Map | Kumamoto | JR Kyūshū: Kagoshima Hon (Mojikō - Yatsushiro), JR Kyūshū: Kyūshū Shinkansen, Kumamoto-shi: Kan [Kumamoto-ekimae], Kumamoto-shi: Tasaki [Kumamoto-ekimae] | 0.0 | Kumamoto-shi | Kumamoto |
| Map | Map | Shin-Suizenji | Kumamoto-shi: Suizenji [Shin-Suizenji-ekimae] | 5.2 | Kumamoto-shi | |
| Map | Map | Suizenji | | 5.8 | Kumamoto-shi | |
| Map | Map | Musashizuka | | 12.9 | Kumamoto-shi | |
| Map | Map | Hikarinomori | | 14.8 | Kumamoto-shi | |
| Map | Map | Higō-Ōzu | | 22.6 | Ōzu-machi | |
| Map | Map | Tateno | Minami-Aso: Takamori | 32.3 | Minamiaso-mura | |
| Map | Map | Akamizu | | 40.2 | Aso-shi | |
| Map | Map | Aso | | 49.9 | Aso-shi | |
| Map | Map | Miyaji | | 53.4 | Aso-shi | |
| Map | Map | Bungo-Ogi | | 75.2 | Taketa-shi | Ōita |
| Map | Map | Bungo-Taketa | | 88.0 | Taketa-shi | |
| Map | Map | Miemachi | | 111.9 | Bungoōno-shi | |
| Map | Map | Inukai | | 125.2 | Bungoōno-shi | |
| Map | Map | Naka-Handa | | 136.3 | Ōita-shi | |
| Map | Map | Ōita | JR Kyūshū: Nippō Hon, JR Kyūshū: Kyūdai Hon (Yufu Kōgen) | 148.0 | Ōita-shi |
| Type | Name | Origin - Major stops - Destination | Trains per day | Fastest train | Average speed |
|---|---|---|---|---|---|
| Limited Express Tokkyū 特急 | Aso Yuruttohaku 阿蘇ゆるっと博 | Kumamoto - Miyaji | 2 | 1h30 | 36 km/h |
| Kyūshū Odan Express 九州横断特急 | Hitoyoshi - Yatsushiro - Kumamoto - Ōita - Beppu | 2 | 4h42 | 53 km/h | |
| Kumamoto - Ōita - Beppu | 2 | 3h02 | 53 km/h | ||
| Rapid Kaisoku 快速 | Hōhi Liner 豊肥ライナー | Kumamoto - Higō-Ōzu | 3 | 28 min | 48 km/h |
| Kumamoto - Hikarinomri | 4 | 18 min | 49 km/h | ||
| Local Futsū 普通 | Kumamoto - Bungo-Taketa | 2 | 2h46 | 32 km/h | |
| Kumamoto - Miyaji | 6 | 1h28 | 36 km/h | ||
| Kumamoto - Higō-Ōzu 2 trains from Yatsushiro | 34 | 33 min | 41 km/h | ||
| Kumamoto - Hikarinomori 1 train from Yatsushiro 1 train from Ōmuta | 3 | 22 min | 40 km/h | ||
| Higō-Ōzu - Miyaji | 7 | 51 min | 36 km/h | ||
| Miyaji - Bungo-Taketa | 3 | 40 min | 52 km/h | ||
| Bungo-Ogi - Bungo-Taketa | 1 | 15 min | 51 km/h | ||
| Bungo-Taketa - Ōita | 17 | 1h09 | 52 km/h | ||
| Bungo-Taketa - Miemachi | 1 | 30 min | 48 km/h | ||
| Miemachi - Ōita | 7 | 43 min | 50 km/h | ||
| Inukai - Ōita | 4 | 28 min | 49 km/h | ||
| Naka-Handa - Ōita | 12 | 16 min | 44 km/h |