| Railway | Line | Linetype |
| JR East | Rikuu-sai | JR railway |
| Rikuu-tō | JR railway |
| Opened | 1913-1914 | Tracks | Single track |
| Mapion | Major stations | Connecting lines | Km | City | Prefecture | |
| Map | Map | Shinjō | JR East: Rikuu-tō, JR East: Ōu Hon (Shinjō - Akita), JR East: Ōu Hon [Yamagata] (Fukushima - Shinjō ), JR East: Yamagata Shinkansen | 0.0 | Shinjō-shi | Yamagata |
| Map | Map | Amarume | JR East: Uetsu Hon | 43.0 | Shōnai-machi |
| Type | Name | Origin - Major stops - Destination | Trains per day | Fastest train | Average speed |
|---|---|---|---|---|---|
| Rapid Kaisoku 快速 | Mogamigawa 最上川 | Shinjō - Amarume - Sakata | 1 | 56 min | 59 km/h |
| Local Futsū 普通 | Shinjō - Amarume - Sakata | 7 | 1h02 | 53 km/h | |
| Shinjō - Amarume | 3 | 45 min | 57 km/h |
| Opened | 1913 - 1917 | Tracks | Single track |
| Mapion | Major stations | Connecting lines | Km | City | Prefecture | |
| Map | Map | Kogota | JR East: Tōhoku Hon (Sendai - Morioka), JR East: Ishinomaki | 0.0 | Misato-machi | Miyagi |
| Map | Map | Furukawa | JR East: Tōhoku Shinkansen | 9.4 | Ōsaki-shi | |
| Map | Map | Naruko-onsen | | 44.9 | Ōsaki-shi | |
| Map | Map | Minami-Shinjō | | 89.2 | Shinjō-shi | Yamagata |
| Map | Map | Shinjō | JR East: Ōu Hon (Shinjō - Akita), JR East: Rikuu-sai, JR East: Ōu Hon [Yamagata] (Fukushima - Shinjō ), JR East: Yamagata Shinkansen | 94.1 | Shinjō-shi |
| Type | Origin - Major stops - Destination | Trains per day | Fastest train | Average speed |
|---|---|---|---|---|
| Local Futsū 普通 | Kogota - Shinjō | 2 | 2h01 | 47 km/h |
| Kogota - Naruko-onsen | 14 | 1h00 | 45 km/h | |
| Kogota - Furukawa | 8 | 12 min | 47 km/h | |
| Naruko-onsen - Shinjō | 7 | 1h00 | 49 km/h |
