Rumoi Main Line

The Rumoi Main Line (留萌本線, Rumoi-honsen) was a Japanese railway line in Hokkaido formerly operated by Hokkaido Railway Company (JR Hokkaido) which connected Fukagawa Station in Fukagawa and Mashike Station in Mashike. Following the discontinuation of service between Rumoi and Ishikari-Numata on 1 April 2023, the Rumoi Main Line was the shortest railway line in Japan to be classified as a "main line", at just 14.4 kilometers (8.9 mi). On 19 November 2016, JR Hokkaido's president announced plans to further rationalize the network by up to 1,237 km (769 mi), or approximately 50% of the network, including closure of the remaining section of the Rumoi Main Line (the Rumoi to Mashike section closed on 5 December 2016). This section of track from Ishikari-Numata to Rumoi was closed on 1 April 2023, with the final train running on 31 March 2023. The remaining track, between Fukagawa to Ishikari-Numata, closed on 1 April 2026, with the final train running on 31 March 2026.