Odra-Pisuerga is a comarca located in the west of the province of Burgos, in the autonomous community of Castile and León, Spain. It is bounded by the west and south-west by the province of Palencia,
Comarca del Arlanza is a comarca located south-west of the province of Burgos in the autonomous community of Castile and León. It is bounded on the north by the Odra-Pisuerga and the Alfoz de Burgos,