National Route 21 (South Korea)

National Route 21 is a national highway in South Korea connects Namwon to Icheon. It established on 31 August 1971.

Main stopovers
North Jeolla Province South Chungcheong Province North Chungcheong Province Gyeonggi Province
 * Namwon - Sunchang County - Jeongeup - Gimje - Jeonju - Wanju County - Jeonju - Iksan - Gimje - Iksan - Gunsan
 * Seocheon County - Boryeong - Hongseong County - Yesan County - Asan - Cheonan
 * Jincheon County - Eumseong County
 * Icheon

Major intersections
IS: Intersection, IC: Interchange
 * ( ■ ): Motorway