title: Japan National Route 21
text: # 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
  