136 km. According to Baidu map, it takes 2 hours 4 1 minute for Shuifu to drive to Mahu via Yanjin and Yongshan, and the distance between the two places is 136 km.

1. Start from Shuifu to the south, follow S307 for 32. 1km, turn left for 250m, pass Shi Cun on the left for 60m, then turn right for 5.4km, turn right 80m and turn left for 2.2km. ..

2. Then turn left for 3.9 kilometers, turn left for 680 meters, turn right for 2.0 kilometers, drive 1 1.7 kilometers, and turn left into Jinxi Road.

3. Finally, drive along X245 18.4km, turn around and drive into X245 for 27. 1km, turn right and go forward 1.9km to reach Mahu.