Top commercial speed in regular service (km/h)
High-speed rail · South Korea
How fast is KTX?
KTX remains South Korea’s flagship high-speed service, with top commercial operating speeds up to 305 km/h on core long-distance lines.
305
km/h max
Service-capable speed envelope (km/h)
KTX entered major service
Core stations across the Seoul hub network
The family
Main KTX fleets by generation
KTX-I
First-generation high-speed sets
305km/h
KTX-Sancheon
Regional heavy-traffic variant
305km/h
EMU-260
Second-generation comfort upgrade
260km/h
KTX-Eum
Future-compatible platform variant
305km/h
Popular routes
How fast, from A to B
| ROUTE | DISTANCE | TIME | AVG SPEED |
|---|---|---|---|
| Seoul → Busan | 417 km | 2h49 | 148 km/h |
| Seoul → Gwangju | 310 km | 1h58 | 157 km/h |
| Seoul → Daejeon | 165 km | 0h55 | 180 km/h |
| Seoul → Pohang | 287 km | 2h30 | 115 km/h |
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