Editing Gyeongwon Line (section)

===Upgrade===
<!-- [[Korea Train Express#Further upgrades of connecting conventional lines]] links here-->
The section of the Gyeongwon Line in the Seoul metropolitan area was among the first to be electrified with the 25&nbsp;kV/60&nbsp;Hz [[Alternating current|AC]] [[Overhead wires|catenary]] system in South Korea when to allow for [[through train]] services with [[Seoul Subway Line 1]]. Further sections were electrified and urban services to [[Seoul Subway Line 1|Line 1]] was extended in the 1980s and then in the 2000s:<ref name="electrification">{{cite web |url=http://www.epic.or.kr/cont/yearbook/download/yearbook_chap07_3.pdf |title=Electricity Almanac 2009 |publisher=Korea Electric Association |access-date=2015-09-17 |archive-url=https://web.archive.org/web/20120314033522/http://www.epic.or.kr/cont/yearbook/download/yearbook_chap07_3.pdf |archive-date=2012-03-14 |url-status=dead }}</ref>

{| class="wikitable"
|-
! Section !! Length !! Electrified rail operation commenced
|-
| Cheongnyangni–[[Kwangwoon University station|Kwangwoon Univ.]] ||align="right"| 5.6&nbsp;km || August 15, 1974
|-
| [[Yongsan station|Yongsan]]–[[Cheongnyangni station|Cheongnyangni]] ||align="right"| 12.6&nbsp;km || December 9, 1978
|-
| Seongbuk–[[Chang-dong station|Chang-dong]] ||align="right"| 3.6&nbsp;km || April 25, 1985
|-
| Chang-dong–[[Uijeongbu station|Uijeongbu]] ||align="right"| 9.4&nbsp;km || September 2, 1986
|-
| Uijeongbu–[[Ganeung station|Ganeung]]<br /><small>then Uijeongbu Bukbu</small> ||align="right"| 1.2&nbsp;km || October 5, 1987
|-
| Ganeung–[[Soyosan station|Soyosan]] ||align="right"| 23.2&nbsp;km || December 15, 2006
|-
| Soyosan-[[Yeoncheon station|Yeoncheon]] ||align="right"| 20.87&nbsp;km || December 16, 2023
|}

Altogether {{convert|55.6|km|mi|abbr=on}} of the line was electrified, and {{convert|53.1|km|mi|abbr=on}} was double-tracked.<ref name="lineop"/>

On September 1, 2010, the South Korean government announced a strategic plan to reduce travel times from Seoul to 95% of the country to under 2 hours by 2020. As part of the plan, the Gyeongwon Line is to be further upgraded until Uijeongbu for 230&nbsp;km/h and may see [[Korea Train Express|KTX]] service.<ref name="plans2020">{{cite web |url=http://joongangdaily.joins.com/article/view.asp?aid=2925474 |title=Bullet trains coming to a town near you by 2020 |date=2010-09-02 |publisher=[[JoongAng Daily]] |access-date=2010-10-27}}</ref>
<!--The source is apparent, but this plans2020 is nearly impossible to be realised. Because the line should be altered for such high speed.-->

In 2012 restoration of the line was completed between [[Sintan-ri station|Sintan-ri]] and [[Baengmagoji station|Baengmagoji]].<ref>{{cite web|url=http://english.kr.or.kr/sub/info.do?page=010102&m=010102|title=History|publisher=Korea Rail Network Authority|access-date=2015-09-17}}</ref>

On December 16, 2023, a single-line railway between Soyosan and Yeoncheon opened on the Seoul Metropolitan Subway Line 1.