Kominato Line

A single-track diesel line running forty kilometres and eighteen stations from Goi, on the coast of Chiba, into the hills at the centre of the Boso Peninsula. It was built to serve villages and still does. Most passengers now ride it simply for the ride.

The company has been running since 1917, and it has never electrified. That decision, made or rather not made over a century, is why the line looks as it does. Twenty-two structures along the route – station buildings, bridges, an old power house – are entered on the national register of Tangible Cultural Properties, and the line and the landscape it runs through have since been selected for a prefectural list celebrating the Cultural Assets of Chiba.

The Line

Trains leave Goi one or two an hour and reach Kazusa-Nakano, at the far end, in about an hour and a half. The first stretch is unremarkable, fields tangled up with housing. By Umatate, seventh out, the houses have thinned and what follows is satoyama: rice terraces, patches of woodland, small settlements, the worked countryside that most of Japan looked like before it didn't. The track crosses rivers and cuts through narrow valleys along the way.

The stations are the other half of the appeal, several of them small wooden buildings left more or less as built, standing alone in the fields with no staff at all. Kazusa-Tsurumai is the best known – it was named among the finest hundred stations in the Kanto region, and Sou Fujimoto designed the new lavatory block there.

A day pass covering the whole line is the sensible way to travel, since getting off at places and waiting for the next train is rather the point.

Before Setting Off

Goi rewards arriving early. A café sits beside the tracks just outside the station, wood-lined, doing simple food and cakes and selling railway souvenirs alongside local produce. The railway's depot is a little further down the line, where old steam locomotives can be seen by arrangement.

Other Riding Options

The Boso Satoyama Trolley runs from mid-March, pulled by a locomotive built to resemble a steam engine. Four carriages, glass-roofed, two with no glass in the windows at all, moving at roughly bicycle pace between Goi and Yoro-keikoku. It makes two round trips a day, mostly at weekends, with extra weekday runs in the busy months. Booking is online in Japanese, and there is a supplement on top of the ordinary fare.

Komichari, opened in June 2026, is a rail bike: you pedal along the actual track between Yoro-keikoku and Kazusa-Nakano.

There are also evening beer trains in summer, a lunch train serving a bento made from local produce, and station illuminations in winter.

Through the Year

Late March into April is when most people come. Rape blossom runs in yellow bands beside the track while the cherries are out at the same time, a combination unusual enough to draw photographers from across the country. The station most of them want is Itabu, where the trees stand beside a flooded paddy and are lit after dark, so everything appears twice – once above the water and once inverted in it. It only works on a still night.

The rest of the year rewards a visit too. Hydrangeas come out along the cuttings in June, summer is heavy green with the windows down, and autumn turns the hills over slowly.

Practical Notes

The southern end is unreliable. Services between Yoro-keikoku and Kazusa-Nakano have been cut back sharply, with buses covering the gap. Trains on that section are suspended entirely from 1 September to 8 October, and outside that window they run only on certain days. Since Kazusa-Nakano is where you change for the Isumi Railway to cross to the Pacific coast, anyone planning that journey should confirm the timetable first.

The carriages get hot. The railway says openly that the air conditioning on its older railcars often weakens or fails in the recent summers, and advises passengers to bring cold drinks, a fan and something to cool themselves with.