Via de la Plata is the ancient way from Hispalis (Sevilla) to Gijon. That way was used time ago and its used nowadays by pilgrims in the pilgrimage to Santiago. This means that the
Camino de Santiago in the Via de la Plata starts at Seville, and arrives at Astorga, where it joins the French Way. But if you keep walking to the North, in the Via de la Plata you´ll arrive to La Pola de Gordon, and join The Camino de San Salvador, ( Leon- Oviedo) and arriving to Oviedo, turn to de West at The Camino Primitivo, to Santiago de Compostela. If choose to keep walking in the VDLP you´ll arrive to Gijon were he VDLP finish. Them you can turn West in the Camino del Norte or Coastal Route, to SdC.
Recorre España de sur a norte, desde Sevilla hasta Gijón, siguiendo el camino de la antigua Vía de la Plata romana | spain.info