Seosan is located in South Korea (Seosan-si, Chungcheongnam-do) and time zone Asia/Seoul.
Places nearby are Tangjin, Taesal-li and Hongseong.
Incheon is 77 km away, Daejeon is 88 km away and Seoul is 96 km away as the crow flies.
Distances from Seosan to the most important cities in South Korea and the world.
36.7816700°
126.4522200°
Expressway in South Korea
https://en.wikipedia.org/wiki/Seosan–Yeongdeok_Expressway