The Gyeongbu Line (Gyeongbuseon) is the most important railway line in South Korea and one of the oldest. It was constructed by Japan in 1905, connecting Seoul to Suwon, Daejeon, Daegu, and Busan. The Gyeongbu Line is by far the most heavily travelled rail line in South Korea. High-speed, express, local, and freight trains provide frequent service along its entire length.
The Gyeongbu Line is the major route out of Seoul and Yongsan Stations and, in addition to regular departures for Busan, trains travel along the Gyeongbu Line en route to Janghang, Gwangju, Mokpo, Suncheon, Yeosu, Pohang, Ulsan, Haeundae, Masan, and Jinju. Trains for Jecheon, Andong, and Yeongju also operate along sections of the Gyeongbu Line.
The most frequent passenger service on the line is provided by Seoul Subway Line 1 on the section between Seoul Station, Guro (where roughly half the subway trains leave the Gyeongbu Line to head out to Incheon via the Gyeongin Line), Suwon, and Byeongjeom.
The Gyeongbu Line is six-tracked from Seoul to Guro, four-tracked from Guro to Cheonan, and double-tracked from Cheonan all the way to Busan. The four-track section from Suwon to Cheonan was electrified on January 20, 2005.
The table below gives the English, Hangeul, and Hanja names of the major stations and junctions on the Gyeongbu Line, together with connecting passenger lines and the cities served directly and indirectly by the connecting lines.