Seoul Metropolitan City Route 21 () is an urban road located in

Seoul Seoul (; ; ), officially known as the Seoul Special City, is the capital and largest metropolis of South Korea.Before 1972, Seoul was the ''de jure'' capital of the Democratic People's Republic of Korea (North Korea) as stated iArticle 103 of ...

South Korea South Korea, officially the Republic of Korea (ROK), is a country in East Asia, constituting the southern part of the Korean Peninsula and sharing a land border with North Korea. Its western border is formed by the Yellow Sea, while its eas ...

. With a total length of , this road starts from the Siheung Intersection in Geumcheon District, Seoul to

Yeonsinnae Station Yeonsinnae station is a station on Seoul Subway Line 3 and Seoul Subway Line 6, on the northwest side of Seoul in the urban area of Eunpyeong-gu. Although Yeonsinnae Station had a corresponding hanja Hanja (Hangul: ; Hanja: , ), alternati ...

in Eunpyeong District. This route is a part of

Asian Highway 1 Asian Highway 1 (AH1) is the longest route of the Asian Highway Network, running from Tokyo, Japan via Korea, China, Southeast Asia, Bangladesh, India, Pakistan, Afghanistan and Iran to the border between Turkey and Bulgaria west of Istanbul ...

Stopovers

;

Geumcheon District Geumcheon District (Geumcheon-gu) is one of the 25 ''gu'' (districts) of Seoul, South Korea. It was created from southern parts of ''Guro-gu'' and tiny sections from Gwangmyeong in 1995. Its district office is located in front of Siheung Station, ...

Gwanak District Gwanak District (Gwanak-gu) is an administrative subdivision (''gu'') of Seoul, South Korea. It lies on the southern skirt of Seoul, bordering Anyang of Gyeonggi Province. The southern border of Gwanak-gu, bordering Anyang, consists of the cr ...

Guro District Guro District (Guro-gu) is a district of Seoul, South Korea, which was separated from Yeongdeungpo District on April 1, 1980. Located in the southwestern part of the city, where besides Yangcheon District and Geumcheon District Guro District ...

Dongjak District Dongjak District (Dongjak-gu) is one of the 25 '' gu'' that make up the city of Seoul, South Korea. Its name was derived from the Dongjaegi Naruteo Ferry, on the Han River which borders the district to the north. It was the 17th ''gu'' create ...

Yeongdeungpo District Yeongdeungpo District () is an administrative district in southwest Seoul, South Korea. Although the origin of the name is uncertain, the first two syllables are thought to be from "''yeongdeung''" (靈登) or "divine ascent", a shamanic rite. T ...

Yongsan District Yongsan District (, ) is one of the 25 districts of Seoul, South Korea. Yongsan has a population of 231,685 (2020) and has a geographic area of , and is divided into 19 '' dong'' (administrative neighborhoods). Yongsan is located in central Seoul ...

- Jung District -

Jongno District Bosingak bell pavilion Jongno District () is a district () in central Seoul, South Korea. It takes its name from a major local street, Jongno, which means "Bell Road". Characteristics Jongno District has been the center of the city for 600 ye ...

Seodaemun District Seodaemun District (, "Great West Gate") is one of the 25 districts of Seoul, South Korea. Seodaemun has a population of 313,814 (2010) and has a geographic area of 17.61 km2 (6.8 sq mi), and is divided into 14 '' dong'' (administrative ne ...

Eunpyeong District Eunpyeong District (은평구, ''Eunpyeong-gu'') is one of the 25 districts of Seoul, South Korea. Eunpyeong has a population of 450,583 (2010) and has a geographic area of 29.7 km2 (11.5 sq mi), and is divided into 16 '' dong'' (administrative ...

List of Facilities

IS: Intersection, IC: Interchange

References

{{Public transport in the Seoul Metropolitan Area Roads in Seoul AH1