South Korea unveils new train line ahead of 2018 Winter Olympics The new Korean Train Express line that will link Seoul station and Gangneung station via an approximately two-hour ride will begin operating in late December, ahead of the 2018 Pyeongchang Winter Olympics. The train will also stop at Incheon International Airport's new Terminal 2, allowing people to take the train straight to Gangneung station. IMAGES AND SOUNDBITES