2026 Chaigu Tangsikuo Cang Trail Race 11th Edition（2026第十一届柴古唐斯括苍越野赛）

Datian Port, called Nixi in its middle reaches, is a river in Linhai, Zhejiang Province, People's Republic of China. It is a left-bank tributary of the Ling River; its upper reaches are called the Xiaozhi Stream and it rises on the western slope of Daluo Shan in the south-east of Xiaozhi Town in eastern Linhai. It winds north-west to the south-east of Xixia Village, where it joins the Kanggu Stream and flows into Niutoushan Reservoir. After leaving the reservoir it flows north-west through Shaojiadu Subdistrict, then turns south-west at Zhuangtou Community in Dayang Subdistrict, passes the Datian Port sluice west of Wukong'ao Village in Dayang Subdistrict, and joins the Ling River. The river is 33.2 kilometres long, has a catchment area of 522 square kilometres and an average annual runoff of 522 million cubic metres.