Hidaka Main Line

The Hidaka Main Line (日高本線, Hidaka-honsen) is a railway line in Hokkaido, Japan operated by Hokkaido Railway Company (JR Hokkaido). It runs between Tomakomai Station in Tomakomai and Mukawa Station in Mukawa, along the coast of Hidaka Subprefecture. Prior to storm damage in January 2015, which resulted in an indefinite suspension of services on most of the line, the line was 146.5 km (91.0 mi) in length, and trains ran a further 116.0 km (72.1 mi) to terminate at Samani Station in Samani. This section was formally closed on 1 April 2021 and permanently replaced by bus service. The closure of this section made the line the second shortest in Japan to be classified as a "main line", at just 30.5 km (19.0 mi), after the Rumoi Main Line's length of 14.4 km (8.9 mi). After the Rumoi Main Line's closure on 1 April 2026, the Hidaka Main Line became the shortest main line in Japan.