– since 2021 (Future) 6th generation – since 2025 (Future) 7th generation – since 2027 (Future) 8th generation – since 2027 (Future) 9th generation – since 2025 (Future) 10th generation – since 2026 See also Subways in South Korea Seoul Metropolitan Rapid Transit Corporation Seoul Metropolitan Subway References External links Seoul Metropolitan Government's Line 7 extension page includes a route map and status information for the westward extension from Onsu. UrbanRail.Net's Seoul Subway Page Map, station and route finder Seoul Metropolitan Subway lines Railway lines opened in 1996 Metro stations in Gwangjin District