| Railway | Line | Linetype |
| JR East | Hokuriku Shinkansen | Shinkansen [Nickname] |
| JR East | Nagano Shinkansen | Shinkansen |
| Traction | 20 kV 50 Hz AC | Takasaki - 5 km west of Karuizawa |
| 20 kV 60 Hz AC | 5 km west of Karuizawa - Nagano |
| Opened | 1997 | Tracks | Double track |
| Mapion | Major stations | Connecting lines | Km | City | Prefecture | |
| Map | Map | Takasaki | Jōshin: Jōshin, JR East: Jōetsu, JR East: Jōetsu Shinkansen, JR East: Shinetsu Hon (Takasaki - Yokokawa), JR East: Hachikō, JR East: Takasaki, | 0.0 | Takasaki-shi | Gunma |
| Map | Map | Annaka-Haruna | | 18.5 | Annaka-shi | |
| Map | Map | Karuizawa | Shinano: Shinano Tetsudō | 41.8 | Karuizawa-machi | Nagano |
| Map | Map | Sakudaira | JR East: Koumi | 59.4 | Saku-shi | |
| Map | Map | Ueda | Shinano: Shinano Tetsudō, Ueda: Bessho | 84.2 | Ueda-shi | |
| Map | Map | Nagano | JR East: Iiyama, JR East: Shinetsu Hon (Shinonoi - Niigata), Nagaden: Nagano (Hon), | 117.4 | Nagano-shi |
| Type | Name | Origin - Major stops - Destination | Trains per day | Fastest train | Average speed |
|---|---|---|---|---|---|
| Shinkansen | Asama あさま | Tōkyō - Takasaki - Nagano | 27 | 1h25 | 160 km/h |
| Tōkyō - Takasaki - Karuizawa | 1 | 1h12 | 125 km/h | ||
| Karuizawa - Nagano | 1 | 34 min | 133 km/h |
