El Cerrato is a natural comarca in Spain comprising locations in the provinces of Palencia, Burgos and Valladolid, although the largest part lies within Palencia. With an area of 1,534 km2, almost 25,000 inhabitants and an average elevation of 783 meters above sea level, the region contains 37 villages and the city of Dueñas. Its capitals throughout history have been Castroverde de Cerrato, Palenzuela and, from the late fifteenth century, Baltanás, the largest municipality.