The Chuo Shinkansen (中央新幹線, Central Shinkansen) is a Japanese maglev line under construction between Tokyo and  Nagoya, with plans for extension to Osaka. Its initial section is between Shinagawa Station in Tokyo and Nagoya Station in Nagoya, with stations in Sagamihara, Kōfu, Iida, and Nakatsugawa. The line is expected to connect Tokyo and Nagoya in 40 minutes, and eventually Tokyo and Osaka in 67 minutes, running at a maximum speed of 500 km/h (311 mph). About 90% of the 286-kilometer (178 mi) line to Nagoya will be tunnels, with a minimum curve radius of 8,000 m (26,000 ft) and a maximum grade of 4% (1 in 25).