Overview: Mark's moods swings and insatiable appetite have the road trippers stopping often as they head north to Galicia. While in Ribera del Duero wine country, Mario grills milk-fed lamb in a vineyard. While staying at a traditional county inn, Mario's competitive edge emerges and he and Gwyneth race Mark and Claudia on the Camino de Santiago, a historic pilgrimage route. Back at the inn, Mario and Gwyneth cook dinner while waiting for Mark and Claudia to get back.