Random thoughts:
On the Camino del Norte now. Just left Bilboa. We did the first 3 days of the Frances route to see the Pyrenees (St Jean to Pamplona). Took a bus from Pamplona to Irun to start the del Norte. Lots of shorter ups and downs on the coast. You can't take a bad picture over here. It's beautiful. You go through lots of small towns. From old church to old church. Unfortunately all the churches have not been open. Much fewer people on the northern route. Trail is less well marked as well. Buen Camino app has been most helpful. Pretty much walk from 6:30 - 1:30 or 2, check in to hotel, eat lunch and go to bed around 8. We are pushing 60 so recovery is slower. 12-20 miles a day. We took an extra day in San Sabastian and Bilboa. We didn't train enough. I am a life long runner and thought it would be easier than it is. Legs and feet very tired at the end of each day. It is like doing a 1/2 marathon every day. At some point it wears you down. Had to stay in a hostel the first night. I wanted to smother the snoring MFer in the same room. Stayed at hotels since.
Buen Camino!