سور الصين العظيم
The first and longest running international marathon whose course is entirely on the Great Wall of China. The course traverses through the Simatai (), a section of the Great Wall of China located in the north of Miyun County, 120 km northeast of Beijing, and Jinshanling (), a section of the Great Wall of China located in the mountainous area in Luanping County, 125 km northeast of Beijing.