The first stage of the Camino del Salvador is pretty long at 40 kilometers. The Camino starts to the right of San Marcos, following the aptly named Avenida de los Pergrinos.
Some pilgrims who are fitter might decide to merge the first stage and the second stage of the Camino del Salvador, thus walking over 40 kilometers on the first day. While it is doable with excellent physical preparation, it is best to stop at La Robla and continue from there to Buiza or Poladura de la Tercia on the second day.
The terrain is not easy, you will walk through mountainous areas. It will take an average of seven hours to walk through this first stage.