The railway journey from Osan to Busan serves as a crucial link between these two notable South Korean cities. The distance is covered by the KTX high-speed train, which can complete the trip in approximately 2.5 hours, reaching speeds of up to 300 km/h. Osan, located in Gyeonggi Province, is known for its historical sites and proximity to the US military base, while Busan, situated on the southeastern coast, boasts beautiful beaches and a bustling port. This page provides essential details for your Osan to Busan travel plans, including train schedules, ticket purchasing options, and frequently asked questions regarding this important rail route.