El Camino de la Costa , the coastal trail , with a length of 4,000 kilometres ( 2,500 mi ) , ran parallel to the sea and was linked with the Camino Real by many smaller routes .
The Camino Real went across the mountain ranges of the Andes , with peak altitudes of more than 5,000 m. El Camino de la Costa , the coastal trail , with a length of 4,000 km ( 2,420 mi ) , ran parallel to the sea and was linked with the Camino Real by many smaller routes .