Great Train eXpress

The Great Train eXpress, known as GTX, is an exciting new way to travel in the busy Seoul Metropolitan Area. This special train network has three lines already being built, called GTX-A, GTX-B, and GTX-C. These trains will be faster than regular trains, making it easier for people to get around quickly.

Plans are also in place for three more lines in the future, named GTX-D, GTX-E, and GTX-F. All of these lines are expected to be finished by the year 2030. The GTX will help many people in the area travel more easily and comfortably.

GTX-A

The GTX-A, officially Metropolitan Area Rapid Transit Line A, is a faster commuter train line in Seoul, South Korea. It has two parts that are already open to the public.

The project began in 2018 but faced delays due to land issues and the discovery of old ruins from the Joseon period.

The line currently operates between Dongtan to Suseo and from Unjeongjungang to Seoul Station. Some stations like Suseo, Seongnam, and Dongtan began service on March 30, 2024, while others opened later in the year. The full connection between Seoul Station and Suseo is expected to be ready in August 2026. Samseong Station will open later, in 2028.

Trains on GTX-A can carry about 1,090 passengers each. The southern part of the line shares tracks with another train service called the SRT, while the northern part is mostly underground. Trains run several times an hour, with shorter wait times in the northern section.

Station Number	Station name			Transfer	Line name	Distance (km)	Total distance (km)	Location		Date Opened
	English	Hangul	Hanja
X101	Unjeongjungang	운정중앙	雲井中央		GTX-A	—	0.0	Gyeonggi Province	Paju	28 December 2024
X102	KINTEX	킨텍스	킨텍스			6.7	6.7		Goyang
X103	Daegok	대곡	大谷			6.9	13.6
X104	Changneung	창릉	昌陵			6.2	19.8			2030
X105	Yeonsinnae	연신내	연신내			3.7	23.5	Seoul	Eunpyeong	28 December 2024
X106	Seoul Station	서울역	서울驛			9.5	33.0		Jung
X107	Samseong	삼성	三成			10.1	43.1		Gangnam	April 2028
X108	Suseo	수서	水西			5.2	48.3			30 March 2024
X109	Seongnam	성남	城南		Suseo–Pyeongtaek HSR (shared)	10.7	59.0	Gyeonggi Province	Seongnam
X110	Guseong	구성	駒城			11.0	70.0		Yongin	29 June 2024
X111	Dongtan	동탄	東灘			11.1	81.1		Hwaseong	30 March 2024

GTX-B

Construction of GTX Line B started on March 7, 2024. The line is expected to be finished by the year 2030.

Station number	Station name			Transfer	Line name	Distance	Total distance	Location
	English	Hangul	Hanja
TBA	Songdo Station	송도	松島		GTX-B	—	0.0	Incheon	Yeonsu
	Incheon City Hall	인천시청	仁川市廳			—	—		Namdong
	Bupyeong	부평	富平			—	—		Bupyeong
	Bucheon Stadium	부천종합운동장	富川綜合運動場			—	—	Gyeonggi	Bucheon
	Sindorim	신도림	新道林			—	—	Seoul	Guro
	Yeouido	여의도	汝矣島			—	—		Yeongdeungdo
	Yongsan	용산	龍山			—	—		Yongsan
	Seoul Station	서울역	서울			—	—		Jung
	Cheongnyangni	청량리	淸凉里			—	—		Dongdaemun
	Sangbong	상봉	上鳳			—	—		Jungnang
	Byeollae	별내	別內		Gyeongchun Line (shared)	—	—	Gyeonggi	Namyangju
	Pyeongnaehopyeong	평내호평	坪內好坪			—	—
	Maseok	마석	磨石			—	—

GTX-C

Construction of the GTX Line C began on January 25, 2024, and is expected to finish by 2028. After choosing the main builder for this line, two more stations might be added: Indeogwon Station and Wangsimni Station.

Station number	Station name			Transfer	Line name	Distance	Total distance	Location
	English	Hangul	Hanja
TBA	Suwon	수원	水原		Gyeongbu Line (shared) Gwacheon Line (shared)	—	0.0	Gyeonggi	Suwon
	Geumjeong	금정	衿井			—	—		Gunpo
	Gwacheon	과천	果川		GTX-C	—	—		Gwacheon
	Yangjae	양재	良才			—	—	Seoul	Gangnam
	Samseong	삼성	三成			—	—
	Cheongnyangni	청량리	淸凉里			—	—		Dongdaemun
	Kwangwoon University	광운대	光云大			—	—		Nowon
	Chang-dong	창동	倉洞			—	—		Dobong
	Uijeongbu	의정부	議政府		Gyeongwon Line (shared)	—	—	Gyeonggi	Uijeongbu
	Deokjeong	덕정	德亭			—	—		Yangju

Additional plans for other lines

In 2021, plans for a Line D were shared, but many people did not agree with the route, so it has not been approved yet. The current government led by Yoon Suk-yeol has promised to build three more lines called Lines D, E, and F. The exact routes for these lines are still being decided, but Line D might be longer than the one first suggested. There are also plans for Lines G and H to reach more areas in the northern and southwestern parts of Gyeonggi Province.

Station number	Station name			Transfer	Line name	Distance	Total distance	Location
	English	Hangul	Hanja
TBA	Janggi	장기	場基		GTX-D	—	0.0	Gyeonggi	Gimpo
	Geomdan	검단	黔丹				—	Incheon	Seo
	Gyeyang	계양	桂陽			—	—		Gyeyang
	Daejang	대장	大壯			—	—	Gyeonggi	Bucheon
	Dangarae	당아래	당아래			—	—

Reception

Some people worry that the Great Train eXpress project might pull more people and businesses toward Seoul. They think this could make Seoul even more important and cause other smaller cities to struggle.