29.9 kilometers. Baidu map shows that Guyuan County is located in the south of Ningxia, and Renshan River is located in the west of Pengyang County of Ningxia. The distance between the two places is 29.9 kilometers, and it takes 7 hours 13 minutes to walk. Guyuan city, referred to as "ancient", was called Dayuan, Gaoping, Xiaoguan and Yuanzhou in ancient times. It is the sub-central city of Ningxia Hui Autonomous Region.