Great Train eXpress

Great Train Express is a planned higher-speed commuter rail network in the Seoul Capital Area project consisting of three separate lines, named GTX A, GTX B and GTX C, and scheduled for completion in 2025. The project was first envisioned in the late 2000s, and construction of GTX Line A began in 2017.

GTX A

Groundbreaking for GTX Line A was held on December 27, 2018. Service is expected to start in 2023.

Station number	Station name English	Station name Hangul	Station name Hanja	Transfer	Line name	Distance in km	Total distance	Location
?	Unjeong	운정	雲井	It's a separate station from the present Unjeong station. It takes about 1 hour to walk to former Unjeong station.	GTX A	---	0.0	Gyeonggi-do	Paju
?	KINTEX	킨텍스	킨텍스	It's a separate station with Daehwa station.		---	---		Goyang
?	Daegok	대곡	大谷	Seohae Line (2021)		---	---
?	Yeonsinnae	연신내	연신내			---	---	Seoul	Eunpyeong
?	Seoul Station	서울역	서울			---	---		Jung
?	Samseong	삼성역	三成	Bongeunsa station will be merged with Samseong station.		---	---		Gangnam
?	Suseo	수서역	水西			---	---
?	Seongnam	성남역	城南		SRT	---	---	Gyeonggi-do	Seongnam
?	Yongin	용인역	龍仁			---	---		Yongin
?	Dongtan	동탄역	東灘			---	---		Hwaseong

GTX B

Construction of GTX Line B is expected to start in 2022.

Station number	Station name English	Station name Hangul	Station name Hanja	Transfer	Line name	Distance in km	Total distance	Location
?	Songdo Station	송도	松島	File:Seoul Metro Line ic1.svg This station is not the Songdo station on the Suin line, but this station will be located in Songdo International City.	GTX B	---	0.0	Incheon	Yeonsu
?	Incheon City Hall	인천시청	仁川市廳	File:Seoul Metro Line ic1.svg File:Seoul Metro Line ic2.svg		---	---		Namdong
?	Bupyeong	부평	富平	File:Seoul Metro Line ic1.svg		---	---		Bupyeong
?	Dangarae	당아래	당아래			---	---	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
?	Mangu	망우	忘憂			---	---		Jungnang
?	Byeollae	별내	別內		Gyeongchun Line	---	---	Gyeonggi	Namyangju
?	Pyeongnae–Hopyeong	평내호평	坪內好坪			---	---
?	Maseok	마석	磨石			---	---

GTX C

Construction of GTX Line C is expected to start in 2021.

Station number	Station name English	Station name Hangul	Station name Hanja	Transfer	Line name	Distance in km	Total distance	Location
?	Suwon	수원	水原		Gyeongbu Line	---	0.0	Gyeonggi	Suwon
?	Geumjeong	금정	衿井			---	---		Gunpo
?	Gwacheon	과천	果川	This station is just named Gwacheon station, but located at Government Complex Gwacheon station.	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		Gyeongwon Line	---	---		Nowon
?	Chang-dong	창동	倉洞			---	---		Dobong
?	Uijeongbu	의정부	議政府			---	---	Gyeonggi	Uijeongbu
?	Deokjeong	덕정	德亭			---	---		Yangju