Seoul Subway Line 4: all 51 stations from Jinjeop to Oido

Line 4 is the sky-blue line. It opened in two stages in 1985, from Sanggye to Hansung University in April and on to Sadang in October. Through-running onto Korail's Gwacheon and Ansan lines later carried it to Oido on the west coast, so a single line now runs from Jinjeop in the north to Oido, passing Seoul Station and Myeongdong on the way. HelloSubway counts 51 stations.

The route

In the north the line goes Jinjeop, Onam, Byeollaebyeolgaram, Bulamsan, Sanggye, Nowon, Changdong, Ssangmun, Suyu, Mia, Miasageori, Gireum, Seongshin Women's University, Hansung University and Hyehwa. The city centre follows: Dongdaemun, Dongdaemun History & Culture Park, Chungmuro, Myeongdong, Hoehyeon, Seoul Station, Sookmyung Women's University and Samgakji. South of the Han it serves Sinyongsan, Ichon, Dongjak, Isu, Sadang and Namtaeryeong, then Seonbawi, Racecourse Park, Seoul Grand Park, Gwacheon and Government Complex-Gwacheon. The last stretch is Indeogwon, Pyeongchon, Beomgye, Geumjeong, Sanbon, Surisan, Daeyami, Banwol, Sangnoksu, Handaeap, Jungang, Gojan, Choji, Ansan, Singiloncheon, Jeongwang and Oido.

Transfers

Twenty-one stations connect to other lines. In the centre they include Dongdaemun, Dongdaemun History & Culture Park, Chungmuro, Seoul Station, Samgakji, Ichon, Dongjak, Isu and Sadang. Further south, Geumjeong is a transfer, and from Handaeap to Oido every station is shared with the Suin-Bundang Line.

How hard is it to type?

The full line takes 399 Hangul keystrokes, about 7.8 per station. The longest name is Dongdaemun History & Culture Park (동대문역사문화공원) at 26 keystrokes, the longest Seoul name in the game. Government Complex-Gwacheon follows with 16 and Seongshin Women's University with 15. The easy ones are Mia, Isu and Choji at four keystrokes each. With 51 stations and that one long name, Line 4 is a fair next step once Line 3 feels comfortable. Start Line 4, or compare it in the difficulty ranking.