The South Face or Japanese Route on Mercedario is a technical and demanding climb, with camp 1 situated at just over 4000m. The route requires a climb of 2000m on 45 to 65 degrees ice and snow in  order to get to camp 2 at 6000m.

This is one of the most beautifful routes ever opened in this mountain. The route goes trough two main Glaciers; Owtrowsky and Karpinsky.

This face is also a great choice for ski fans, and it has been skied down three times.

Mercedario´s South Face conditions depend on the winter snows, but ussually the best months to attempt it are November, December and early January.