We will be traveling from Budapest on April 17th and want to visit Bilbao, Altamira, Madrid and Picos de Europa in Spain and also Porto in Portugal.
The tour we are taking in Picos de Europa will pick us up in Santander on May 4th and we will head home (San Diego) after that trip. We would be willing to spend a day or two after the tour in one location to fly home from. Madrid maybe? Porto? Santander?
While traveling between locations we prefer to take public transport so we can avoid car rentals.
The logistics are making me crazy and will appreciate any advice you might have.
Thanks!
Jackie