393.2 kilometers. According to the website published by Huzhou, the National Fitness Center located in Tiaoxi West Road is a popular fitness center in Huzhou. The center's 250-meter global plastic track is flat and worry-free, with street lamps, suitable for fun running. The total length of the circle around the lake is as high as 393.2 kilometers, surrounded by five major cities, including Wuxi, Huzhou and Suzhou.