Yes, walking on asphalt roads for a long time can be hard on the feet. Thanks for sharing. It seems like a good idea to take a taxi to avoid the 16-kilometer road section after Castilblanco de los Arroyos. Is there a safe taxi service with dedicated phone lines in Spain? How do you call a taxi there?
By the way, I saw you sharing on YouTube about using long tubes to check in trekking poles and other items. Do you discard these boxes after checking them in and buy new ones for the return journey, or do you carry them with you throughout the trip?