The Nagano Line has frequent local and express services. It is a major route for commuter traffic in Nagano, and also serves as a link for tourists going to the town of Obuse, the hot springs at Yudanaka, and the ski resorts at Shiga Kōgen. At limited times throughout the year, there are special reserve round-trip trains between Nagano and Obuse several nights a week in which customers are served a local, specially-made bento and drink local alcohol. For example, on select evenings in March and April, local nihonshu. At other seasons, a beer train on the same route is available. In addition, a wine-tasting train from Nagano to Yudanaka or Yudanaka to Nagano is available on select Saturdays throughout the year.
The original Nagano Electric Railway was built in 1926, connecting Gondō in Nagano with Suzaka, and electrified at 1,500 V DC. Later that year, the company absorbed the operations of Katō Railway, which operated a line on the east bank of the Chikuma River from Yashiro via Suzaka to Kijima, with the Gongo to Yoshida section being double-tracked. The following year, an additional line was constructed from Shinshū-Nakano to Yudanaka, and in 1928, the line was extended to Nagano Station as dual track. The Yoshida - Asahi section was double-tracked in 1956, and freight services ceased in 1979. CTC signalling was commissioned between Yudanaka and Asahi in 1980, and extended to Nagano in 1984. The section from Nagano to Zenkōjishita was converted to an underground railway in 1981.
Former connecting lines
Suzaka Station: The Kato Railway opened a 24 km line to Yashiro on the Shinano Railway Line in 1922, electrified it at 1,500 V DC in January 1926, and merged with the Nagano Electric Railway in September the same year. Due to falling patronage, the line closed on 31 March 2012.
Shinshū-Nakano Station: The Kato Railway opened the 13 km line to Kijima in 1925 and electrified it at 1,500 V DC the following year. Freight services ceased in 1979 and CTC signalling was commissioned on the line in 1980, but due to falling patronage, the line closed in 2002.
