Many (most?) peregrino seem to go away from the sea and towards Oviedo and then back to Aviles (This map: https://theroadgoesforeveron.files.wordpress.com/2014/06/camino-del-norte.jpg). Is there any particular reason for this? I'm naturally inclined towards the coast so would prefer Sebrayo=>Gijon=>Aviles. What's the downside of this route? Thanks.