Tone River, Major river system in Kantō region, Japan
The Tone River is a major waterway in the Kantō region, rising in the mountains of Gunma and flowing through several prefectures before reaching the Pacific coast at Chōshi. Along its course it passes both rural areas with wide fields and urban zones, where it shows broad banks and sometimes long bridges.
In the 17th century, engineers redirected the lower course so that the water flowed into the sea at Chōshi instead of into Tokyo Bay, a project that changed land use and settlement patterns across the plain. This rerouting remains one of the largest river engineering works in Japanese history.
Local residents sometimes call it Bandō Tarō, an old nickname that reflects its size and its importance to the Kantō plain. The name carries the idea of a powerful, respected waterway that people in the region have known and relied on for centuries.
Several cycling and walking paths run along the banks, offering open views of the water and surrounding fields at many points. Access is generally easy, with numerous bridges and roads crossing the waterway.
A cycling path follows the bank for many dozens of kilometers and allows visitors to cover long distances without car traffic. This route is well known among cyclists looking for quiet paths through the plain.
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