This article relies on a single source. (June 2025) |
| Expressway No.100 | |
|---|---|
| Capital Region First Ring Expressway 수도권제1순환고속도로 | |
| Route information | |
| Length | 128.02 km (79.55 mi) |
| Existed | 1992–present |
| Major junctions | |
| Beltway around Seoul | |
| Cycle end | Pangyo JC in Seongnam, Gyeonggi Province |
| 33 | |
| Cycle end | Pangyo JC in Seongnam, Gyeonggi Province |
| Location | |
| Country | South Korea |
| Major cities | Seongnam, Hanam, Guri, Uijeongbu, Goyang, Gimpo, Incheon, Bucheon, Siheung, Anyang |
| Highway system | |
| Capital Region First Ring Expressway | |
| Hangul | 수도권제1순환고속도로 |
|---|---|
| Hanja | 首都圈第一循環高速道路 |
| RR | Sudogwon je1 sunhwan gosok doro |
| MR | Sudokwŏn che1 sunhwan kosok toro |


The Capital Region First Ring Expressway (Formerly as Seoul Ring Expressway) (Expressway No.100) (Korean: 수도권제1순환고속도로) is an expressway, circular beltway or ring road around Seoul, South Korea. It connects satellite cities around Seoul, Ilsan, Namyangju, Hanam, Pyeongchon, Jungdong, Bundang, Pangyo, Sanbon and Gimpo. The expressway runs 127.6 km. Seoul Ring Expressway is currently under construction to widen the expressway between Anhyeon Junction to Seongnam which is expected to be finished in 2016.
Since 2010, Gyeonggi Loop Bus connects the many Satellite towns to each other through this Expressway.
| Name | Korean name | Location | Length | Date of Completion | Notes |
|---|---|---|---|---|---|
| Gwangam Tunnel(Guri) | 광암터널(구리) | Hanam, Gyeonggi-do | 726m | 2002 | |
| Gwangam Tunnel(Pangyo1) | 광암터널(판교1) | 743m | 1991 | ||
| Gwangam Tunnel(Pangyo2) | 광암터널(판교2) | 752m | |||
| Buramsan Tunnel(Ilsan) | 불암산터널(일산) | Nowon, Seoul | 1,685m | 2006 | |
| Buramsan Tunnel(Guri) | 불암산터널(구리) | 1,665m | |||
| Suraksan Tunnel | 수락산터널 | Uijeongbu, Gyeonggi-do | 2,950m | 2006 | |
| Howon Tunnel(Ilsan) | 호원터널(일산) | Uijeongbu, Gyeonggi-do | 180m | 2007 | |
| Howon Tunnel(Guri) | 호원터널(구리) | 149m | |||
| Sapaesan Tunnel(Ilsan) | 사패산터널(일산) | Yangju, Gyeonggi-do | 3,997m | 2007 | |
| Sapaesan Tunnel(Guri) | 사패산터널(구리) | 3,993m | |||
| Nogosan 1 Tunnel(Ilsan) | 노고산1터널(일산) | Yangju, Gyeonggi-do | 2,177m | 2006 | |
| Nogosan 1 Tunnel(Guri) | 노고산1터널(구리) | 2,197m | |||
| Nogosan 2 Tunnel(Ilsan) | 노고산2터널(일산) | Yangju, Gyeonggi-do | 975m | 2006 | |
| Nogosan 2 Tunnel(Guri) | 노고산2터널(구리) | 995m | |||
| Sorae Tunnel(Pangyo) | 소래터널(판교) | Siheung, Gyeonggi-do | 421m | 1999 | |
| Sorae Tunnel(Ilsan) | 소래터널(일산) | 446m | |||
| Suam Tunnel(Pangyo) | 수암터널(판교) | Anyang, Gyeonggi-do | 1,254m | 1999 | |
| Suam Tunnel(Ilsan) | 수암터널(일산) | 1,294m | |||
| Suri Tunnel(Pangyo) | 수리터널(판교) | Gunpo, Gyeonggi-do | 1,865m | 1999 | |
| Suri Tunnel(Ilsan) | 수리터널(일산) | 1,882m | |||
| Anyang Tunnel | 안양터널 | Anyang, Gyeonggi-do | 390m | 1996 | |
| Cheonggye Tunnel(Pangyo) | 청계터널(판교) | Uiwang, Gyeonggi-do | 550m | 1995 | |
| Cheonggye Tunnel(Ilsan) | 청계터널(일산) | 450m |
This article contains a bulleted list or table of intersections which should be presented in a properly formatted junction table. (November 2021) |