Seoul Subway Line 3
Native name3호선(三號線)
Sam Hoseon
TypeRapid transit
SystemSeoul Metropolitan Subway
StatusOperational
TerminiDaehwa
Ogeum
Stations44
34-Seoul Metro
10-Korail
OpenedJuly 12, 1985
Operator(s)Seoul Metro & Korail
Line length57.4 km (35.7 mi)
38.2 km (23.7 mi) Seoul Metro
19.2 km (11.9 mi) Korail
Number of tracks2