The Seoul Metro in Seoul has 9 lines and 331 stations across 340 km of track, run by Seoul Metro & Korail. This guide lists every line with its end stations and colour, the main interchange stations, and tips for reading the official map.
Official map: the latest network map is published by Seoul Metro & Korail. It shows every station and is updated when lines or stations open.
Network at a glance
- Lines
- 9
- Stations
- 331
- Network length
- 340 km
- Opened
- 1974
- Operator
- Seoul Metro & Korail
- Main interchanges
- Seoul Station, Sindorim, Express Bus Terminal, Jongno 3-ga
All Seoul Metro lines
Line 1
99 stations · 200.5 km · Soyosan ↔ Sinchang / Gwangmyeong
Line 2
51 stations · 60.2 km · Circular (loop) + branches
Line 3
38 stations · 38.2 km · Daehwa ↔ Ogeum
Line 4
47 stations · 65.7 km · Danggogae ↔ Oido
Line 5
56 stations · 57.0 km · Banghwa / Hanam Pungsan ↔ Macheon / Amsa
Line 6
38 stations · 35.1 km · Eungam ↔ Sinnamdong
Line 7
51 stations · 56.7 km · Jangsam ↔ Bupyeong-gu Office
Line 8
17 stations · 17.7 km · Amsa ↔ Moran
Line 9
38 stations · 38.8 km · Gimpo Airport ↔ VHS Medical Centre
AREX Airport Express
12 stations · 61.0 km · Seoul Station ↔ Incheon Airport T2
Key interchange stations
These stations connect two or more lines, so they are the easiest places to change trains.
| Station | Lines and connections |
|---|---|
| Seoul Station | 1, 4, AREX, KTX |
| Sindorim | 1, 2 |
| Express Bus Terminal | 3, 7, 9 |
| Jongno 3-ga | 1, 3, 5 |
| Dongdaemun History & Culture Park | 2, 4, 5 |
| Hongik University | 2, AREX, Gyeongui-Jungang |
| City Hall | 1, 2 |
How to read the Seoul Metro map
- Follow the colour. Each line has its own colour, and the same colour is used on platform signs and inside trains.
- Use the end station to pick a direction. Platform signs show the terminus a train is heading to, so check which end of the line your stop is towards before you board.
- Look for interchange symbols. Where lines cross, the map marks the station as an interchange. Allow a few extra minutes for long walking corridors at big hubs.
- Check for closures. Weekend engineering work can close sections of a line. The operator's website and app list planned closures.
Plan your trip: Seoul Metro fares · all stations · visitor guide · airport connection