Japan’s Ministry of Land, Infrastructure, Transport and Tourism and JR Hokkaido have announced that Hokkaido Shinkansen services will operate at 260 km/h inside the Seikan Tunnel for six days during the year-end and New Year holiday period.
The measure will be implemented from December 30 through January 4, 2027. Trains will run at 260 km/h, up from the current 160 km/h, on the approximately 54-kilometer section inside the Seikan Tunnel, reducing journey times by around six minutes. It will apply to a total of 14 services—seven in each direction—from the first train until around 3:30 p.m. On December 30 only, it will also apply to nine services—four northbound and five southbound—from the first train until around noon. One additional temporary service will be included on certain days.
As a result, timetable changes will be made to certain Hakodate Liner services connecting with the Shinkansen, as well as certain Shinkansen services stopping at Kikonai Station.
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