The Seoul Metropolitan City roads, known as 서울특별시도 in Korean (Seoulteukbyeolsido), is a form network of highways that cover the metropolitan region of Seoul. These highways are maintained and designated by urban municipalities and are distinguished from other road systems by their official number and guide number. The official numbering system is specifically used in the legal context, while the guide numbering system is utilized for signage and is widely acknowledged by the public.
Seoul Metropolitan City roads consist of three categories: urban expressways (도시고속도로 in Korean), trunk routes (주간선도로 in Korean), and auxiliary routes (보조간선도로 in Korean).
There are a total of 10 routes in the Seoul Metropolitan City road network, and some of these routes may overlap with each other.
| Official number | Guided number | Name | Korean name | Length (km) | Note | |
|---|---|---|---|---|---|---|
| C3 | Seoul Inner Loop Naebusunhwan-ro | 내부순환로 (내부순환도시고속도로) | 40.1 | overlap with and | ||
| 01 | Seobu Ganseondoro Seobuganseon-doro | 서부간선도로 (서부간선) | 16.8 | overlap with and | ||
| 02 | Dongbu Expressway Dongbuganseon-doro | 동부간선도로 (동부간선) | 32.5 | overlap with and | ||
| 03 | - | Bukbu Expressway Bukbuganseon-doro | 북부간선도로 (북부간선) | 7.8 | ||
| 04 | Gangbyeon Northern Highway Gangbyeonbuk-ro | 강변북로 | 29.0 | overlap with,, and | ||
| 05 | Olympic-daero Olympic-daero | 올림픽대로 | 42.5 | |||
| Gyeongbu Urban Expressway Gyeongbuganseon-doro | 경부간선도로 (경부간선) | 6.8 | Original routing of Gyeongbu Expressway into Seoul | |||
| 07 | Gangnam Beltway Gangnamsunhwan-ro | 강남순환로 | 13.8 | |||
| 08 | - | Shinwol-Yeoui Underpass Sinwolyeoui-jihadololeul | 신월여의지하도로를 | 7.7 | Underground bypass of Gukhoe-daero | |
| 09 | - | Western Arterial Underpass Seobuganseon-jihadolo | 서부간선지하도로 | 9.0 | Underground bypass of Seobu Ganseondoro |
| Number | Link | Length (km) | Note | |
|---|---|---|---|---|
| 21.3 | ||||
| 24.2 | ||||
| 17 | ||||
| 27.5 | ||||
| 31 | ||||
| 33.6 | ||||
| 18.7 | ||||
| 28.3 | ||||
| 44.6 |
| Number | Name | Korean name | Length (km) | Note | |
|---|---|---|---|---|---|
| Downtown Ring Road | 도심순환도로 | 11.44 | Part of | ||
| 시흥 ~ 중림선 | 17.69 | Part of | |||
| Sillim-Jingwan Inner Line | 신림 ~ 진관내선 | 22.6 | Part of, overlaps Route C1 | ||
| Galhyeon-Jeokseon Line | 9.7 | ||||
| 2.24 | |||||
| Sadang-Seobinggo Line | 8.25 | ||||
| Umyeon-Junghag Line | 14.34 | ||||
| Jangji-Gahoe Line | 21.22 | ||||
| Pildong-Dobong Line | 16.48 | ||||
| Yangjae-Hyehwa Line | 12.94 | ||||
| 19.56 | |||||
| 11.73 | |||||
| Segok-Sanggye Line | 29.08 | ||||
| 9.18 | |||||
| Banghwa-Sagajeong Line | 51.76 | ||||
| Sinjeong-Bongcheon Line | 9.8 | ||||
| Sadang-Amsa Line | 17.07 | ||||
| Gwahae-Samsung Line | 26.84 | ||||
| Yangpyeong-Nogosan Line | 5.64 | ||||
| Gongdeok-Penglai Line | 2.56 | ||||
| Eulji-Dunchon Line | 16.24 | ||||
| Sinwol-Sindang Line | 17.05 | ||||
| Seorin-Sangil Line | 19.85 | ||||
| Onsu-Mangu Line | 30.27 | ||||
| Sinseol-Gongneung Line | 11.03 | ||||
| Gayang-Hyeonjeo Line | 12.24 |
| Number | Name | Korean name | Via road | Length (km) | Note | |
|---|---|---|---|---|---|---|
| Gwangmyeong-Siheung Line | 광명 - 시흥선 | Kia-ro | 0.35 | |||
| Siheung-Sillim Line | 시흥 - 신림선 | Geumha-ro, Hoam-ro | 6.29 | |||
| Siheung Line | 시흥선 | Hoam-ro | 1.28 | |||
| Garibong-Doksan Line | 가리봉 - 독산선 | Beoman-ro | 1.72 | |||
| Seongsan-Jingwan Line | Nongsusansijang-ro, World Cup-ro, Jeungsan-ro, Yeonseo-ro | 12.56 | Part of | |||
| Sangam Line | World Cup Bridge, Jeungsan-ro | 3.29 | ||||
| Seongsan-Hongje Line | Nongsusansijang-ro, World Cup-ro, Sandnae-ro | 5.69 | ||||
| Sangam-Daeheung Line | World Cup-ro, Dokmak-ro, Daeheung-ro | 8.73 | ||||
| Sangam-Seogyo Line | Worldcupbuk-ro, Hongik-ro | 5.53 | ||||
| Sangam-Seongsan Line | Sungam-ro | 3.65 | ||||
| Jeungsan-Yeonhui Line | Jeungga-ro | 2.70 | ||||
| Sinsa-Hongeun Line | Gajwa-ro | 4.21 | ||||
| Seooleung-Jingwanoe Line | Jingwan 1-ro | 1.04 | ||||
| Jingwannae-Jingwanoe Line | Bukhansan-ro | 2.19 | ||||
| Wolgog Line | Opaesan-ro | 0.90 | ||||
| Cheong-Wonhyo Line | Wonhyo-ro | 0.70 | ||||
| Seongsu Line | Wangsimni-ro | 0.41 | ||||
| Noyu-Junggog Line | Neungdong-ro | 4.51 | ||||
| Jamsil Railway Bridge | Jamsil Railway Bridge, Gangbyeon Station Road | 2.04 | ||||
| Jamsil-Bangi Line | Baekje Gobun-ro | 5.15 |
| Number | Name | Korean name | Via road | Length (km) | Note | |
|---|---|---|---|---|---|---|
| Doksan-ro | 3.70 | |||||
| Gasan-ro, Nambusunhwan-ro, Gurodong-ro, Gurojungang-ro, Mokdong-ro, Deungchon-ro | 10.06 | Duplicates City Route 42 | ||||
| Munseong-ro, Sillim-ro, Ssukgogae-ro | 4.38 | Overlaps City Route 4223 | ||||
| Gamasan-ro | 5.38 | |||||
| Singil-ro | 2.95 | |||||
| Yeouidong-ro, Yeouiseo-ro | 7.20 | |||||
| Yeoui Interchange entrance and exit road | 3.85 | |||||
| Uisadang-daero | 1.63 | |||||
| Chilpae-ro, Sejong-daero, Namdaemun-ro, Ujeongguk-ro | 2.61 | Duplicates City Routes 24 and C1 | ||||
| Sadang-ro | 2.35 | |||||
| Seobinggo-ro | 2.68 | Duplicates City Route 25 | ||||
| Duteopbawi-ro, Hoam-ro | 1.78 | |||||
| Sowol-ro | 3.78 | |||||
| Sopa-ro | 1.41 | |||||
| Seooreung-ro, Eunpyeong-ro | 1.32 | |||||
| Cheongwa-daero, Hyoja-ro | 1.00 | |||||
| Jinheung-ro | 1.90 | Duplicates City Route 23 | ||||
| Seobinggo-ro, Ttukseom-ro | 1.00 | Former portion of Gangbyeon North Road | ||||
| Kumho-ro, Cheonggu-ro | 2.27 | |||||
| Saimdang-ro, Yeoksam-ro | 6.29 | |||||
| Noksapyeong-daero 58-gil | 1.93 | |||||
| Dosan-daero | 3.00 | |||||
| Wirye Tunnel | 2.27 | |||||
| Dogseodang-ro | 4.95 | |||||
| Supyo-ro | 1.23 | |||||
| Chungmu-ro, Donhwamun-ro | 1.87 | |||||
| Mareunnae-ro | 1.73 | |||||
| Alilang-ro | 1.51 | |||||
| Samyang-ro, Haedeung-ro | 9.83 | |||||
| Wolgye-ro, Hangeulbiseok-ro | 9.79 | |||||
| Bogukmun-ro, Solsaem-ro, Ohyeon-ro | 6.51 | |||||
| Insubong-ro | 3.15 | |||||
| Deokneung-ro | 9.82 | |||||
| Nohae-ro | 5.19 | |||||
| Sirubong-ro | 3.10 | |||||
| Nowon-ro, Banghak-ro | 10.87 | |||||
| Dobong-ro 170-gil, Dongil-ro 243-gil | 0.99 | Overlaps | ||||
| Dobongsan Trail | 0.53 | |||||
| Jangchungdan-ro | 2.15 |