Tomamu

Departure data for this station is not available on this site.

Tomamu Station, at 537.13 m above sea level, is the highest passenger station in service on JR Hokkaido. It opened on 1 October 1981 as Sekishō-Kōgen Station when the Sekishō Line opened. A station had been planned at the site under the provisional name Kami-Tomamu ever since the line's construction was authorised in 1966, but depopulation along the route during construction led JNR to lean towards a signal post instead; from consultations in 1975 the plan moved back to a passenger station, and a third-sector ski-resort development launched in 1980 — which opened as 'Alpha Resort Tomamu' in 1983 — reinforced the decision to open the station for passengers. The station was renamed Tomamu on 1 February 1987, with the adjacent Tomamu Signal Box becoming Horoka Signal Box; the JNR privatisation took effect that April. A 'Tomamu Travel Centre' booth inside the resort handled bookings from 1991 until 2015. From 2019 every regular limited-express stopped here, until the 15 March 2025 timetable change made the late-night Ozora 12 and Tokachi 9 pass through.

The provisional planning name was Kami-Tomamu; the opening name 'Sekishō-Kōgen' ('Sekishō Highlands') was a coined tourist-friendly title, replaced in 1987 by Tomamu to match the local district and ski-resort name. The base word comes from the Ainu tomam ('marsh').