We are picking up car in Bilbao with drop off in Lisbon 12 days later. Was looking at a couple of three days in and around Santander, Potes, Leon before driving west and into Portugal. Suggestions welcome but main question is what kind of road grades are we talking? We have both done 99.99 percent of our driving in a city at sea level. And haven’t driven a manual transmission regularly in 25 years. So are we possibly a danger to ourselves or others? Does the answer change if we add driving from Leon into northern Portugal via Verin?
Thanks
Jan