운행 노선은 총 23개로 1-9호선과 지역 명칭을 딴 14개의 호선으로 구성. 서울 지하철은 주변 도시까지 잇고 있어 지하철을 타고 근교 도시 여행이 가능하다.
There are a total of 23 operating routes, consisting of lines 1-9 and 14 lines named after the regions. The Seoul subway connects to surrounding cities, so it is possible to travel to nearby cities by subway.
The service includes a total of 23 lines, consisting of Lines 1-9 and 14 other lines named after regions. Seoul Subway connects to surrounding cities, making it possible to travel to nearby cities by subway.