KORAIL, officially Korea Railroad Corporation, is South Korea's national rail operator. It runs high-speed KTX, KTX-Eum, and KTX-Cheongryong services, plus ITX-Saemaeul, ITX-MAUM, Mugunghwa, Nuriro, regional trains, and selected airport rail services. KORAIL trains link major cities such as Seoul, Busan, Daegu, Daejeon, Gwangju, Mokpo, Yeosu, Gangneung, and Jinju across the national network. Its high-speed and conventional services use main stations including Seoul Station, Yongsan, Cheongnyangni, Daejeon, Dongdaegu, Gwangju-Songjeong, and Busan. Rail Monsters supports online booking for selected KORAIL tickets with schedules and ticket details shown during search.