The 6th Ring Road (Simplified Chinese: 六环路, Hanyu Pinyin: Liùhuán Lù) is an expressway ring road in Beijing, China which runs around the city approximately 15–20 kilometres (9.3–12.4 mi) from the centre of the city. The 6th Ring Road is approximately 220 kilometres (140 mi) long. Although it is the city's fifth ring road, it is named the 6th Ring Road. The road is numbered G4501
The 6th Ring Road runs within the confines of the municipality of Beijing. It is one of the most circular routes but still remarkably rectangular. Basic Route: Liuyuan Bridge - Liqiaozhen - Sanhui Bridge - Zhangjiawan - Majuqiao - Huangcun - Liangxiang - Mentougou - Zhaikou/Wenquan - Xishatun - Gaoliying - Huosiying - Liuyuan Bridge It is on the outer fringes of Beijing, and even beyond Beijing Capital International Airport. The expressway ring road is the only one to link with the equally remote Tongyan Expressway.
As early as 2000 or 2001, the southeastern stretch from Sanhui Bridge (interchange with the Jingha Expressway) through to Majuqiao (interchange with the Jingjintang Expressway) was put into operation. The route was first referred to as the projected 2nd Expressway Ring Road, much like the 5th Ring Road was once referred to as the 1st Expressway Ring Road; however, the long name was ditched in favour of the present-day 6th Ring Road.