Cuesta de Llanta
Cuesta de Llanta is one of the most demanding roads in Chile. Located in Chañaral Province, Atacama Region, the climb is simply terrible. It’s heavily trafficked by trucks.
The section, part of the Carretera C-13, also known as Camino al Salvador or Camino a Diego de Almagro, is asphalted, but very steep. It’s 2.4km long with an average gradient of 8%.