The KTX and Mugunghwa trains connect Seoul to Chungju with travel times varying significantly. The KTX, South Korea's high-speed train, operates on this route reaching speeds of up to 300 km/h, taking about 1 hour and 30 minutes. Alternatively, the Mugunghwa, a slower service, runs at speeds around 100-120 km/h, with journey times extending to approximately 2 hours and 30 minutes. Both trains offer comfortable seating, but only the KTX provides onboard amenities such as Wi-Fi.