History
Komoro Station opened on 1 December 1888 as a government-built railway station, and is today jointly used by Shinano Railway and JR East. Until 1997 it sat on the Shin'etsu Main Line; the opening of the Nagano Shinkansen on 1 October 1997 led the parallel Karuizawa–Shinonoi section to be transferred to the third-sector Shinano Railway, which now manages the station. JR East's Koumi Line terminates here after 78.9 km from Kobuchizawa. Following multi-year accessibility work, three elevators entered service in March 2018, completing the station's barrier-free upgrade. From 14 March 2026, Suica became usable on the Shinano Railway portion.
History summarized from Japanese & English Wikipedia · last reviewed 2026-05-18.
Notes
Between 1926 and 1936 the station was also served by the short-lived Nunobiki Electric Railway, an interurban line that closed within a decade of opening.