Japan National Route 21
# Japan National Route 21

National Route 21 (国道21号, Kokudō Nijūichi-gō) is a national highway connecting Mizunami, Gifu Prefecture and Maibara, Shiga Prefecture in Japan.

## Route data

* Length: 101.4 kilometers (63.0 mi)
* Origin: Mizunami (originates at junction with Route 19)
* Terminus: Maibara (ends at Junction with Route 8)
* Major cities: Minokamo, Kakamigahara, Gifu, Ōgaki

## History

* 4 December 1952 - Designation as First Class National Highway 21 (from Mizunami to Maibara)
* 1 April 1965 - Designation as General National Highway 21 (from Mizunami to Maibara)

## Intersects with

* Gifu Prefecture
   * Route 19
   * Route 248
   * Route 41
   * Routes 22 and 156
   * Route 157
   * Routes 258 and 417
   * Route 365
* Shiga Prefecture
   * Route 8
