Tohoku Main Line

Tōhoku Main Line
An E721 series EMU pulling into Nagamachi Station
Overview
Native name	東北本線
Locale	Kantō, Tōhoku
Termini	Tokyo Morioka
Operation
Owner	JR East
Technical
Line length	575.7 km (357.7 mi)
Track gauge	1,067 mm (3 ft 6 in)
Electrification	1,500 V DC from Tokyo to Kuroiso 20 kV AC, 50Hz from Kuroiso to Morioka
Operating speed	120 km/h (75 mph)
Route map Tōhoku Main Line in red

The Tōhoku Main Line (東北本線, Tōhoku-honsen^?) is a 575.7 km long railway line in Japan operated by the East Japan Railway Company (JR East). Although officially the line starts from Tokyo Station in Chiyoda, Tokyo, most of the long-distance trains actually begin at Ueno Station in Taitō, Tokyo, and pass through such cities as Saitama, , Fukushima, and Sendai, before reaching the end of the line in Morioka. The line originally extended to Aomori, but was truncated upon the extension of the Tōhoku Shinkansen beyond Morioka, which mostly parallels the Tōhoku Main Line.

The 159.9 km long portion of the line between Ueno Station and Kuroiso Station in , is often referred to as the (JR) Utsunomiya Line. A portion of the Tōhoku Main Line is also shared with the Keihin-Tōhoku Line (29.6 km between Tokyo Station and Ōmiya Station in Ōmiya-ku, Saitama) and the Saikyō Line (18.0 km between Akabane Station in the Kita ward of Tokyo and Ōmiya Station).