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The warmest train experience ever: Japan’s limited-winter-season heated kotatsu train is back on track!

Published: 2026-09-26 👁 100 views
Last updated 2026-09-26 — As the cold winter arrives, Japan’s northeastern Iwate Prefecture’s famous seasonal railway train, the “Heated Kotatsu Train,” is back on the rails starting December 6th once again this winter season. It allows passengers to cozy up in warm blankets while enjoying the scenery outside the train windows along the tracks...

Text by the MOOK Scenic Spots Travel Life Network Editorial Team, compiled and reported

As the cold winter arrives, Japan’s northeastern Iwate Prefecture’s famous seasonal railway train, the “Heated Kotatsu Train,” is back on the rails starting December 6th once again this winter season. It allows passengers to cozy up in warm blankets while comfortably enjoying the scenic views outside the train windows along the tracks.

Limited-winter-season Heated Kotatsu Train is now running again!(Image source / yuta-murakami.cocolog-nifty)

The Heated Kotatsu Train runs on the Sanriku Railway North-Iinohama Line (making round trips between Kuji and Miyako), and is a special seasonal train available only in winter each year.Due to earthquake damage, the rail line was previously interrupted and inaccessible. After four years, the route has been fully restored and reopened this year for public use. Compared to other Japanese railways, the Sanriku Railway, which began operations in 1984, is a regional railway with modernized facilities. Like the Shinkansen, it passes through long tunnels along the way, but the biggest highlight is the breathtaking views of the expansive blue Iinohama coastline that passengers can enjoy between tunnel sections!

The Heated Kotatsu Train runs on the Sanriku Railway, where passengers can snuggle warmly inside the kotatsu while admiring the scenery along the railway. (Image source / tohoku-monogatari)

Additionally, when the train passes sections with ocean views, it will thoughtfully slow down and make two brief stops, during which an onboard announcement provides commentary about the landscape. This allows passengers not only to take in the endless blue seascape but also to gain a deeper understanding of the local coastal features.

When the train encounters beautiful seaside sections along the way, it slows down so everyone can fully enjoy the view. (Image source / kn.ndl.go)

Passengers can enjoy the railway scenery while nestled under the warm kotatsu. (Image source / yuta-murakami.cocolog-nifty)

During the journey, train attendants dress up as ama (female divers) to serve passengers. (Image source / geocities)

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