Waymarked route takes you off the main road briefly forking left to Viloria de la Rioja. Signposted ‘cuna de Santo Domingo’ (ie his birthplace), rejoining the main road 2 km later. There is an alternative route from Redecilla to Belorado, 1 km longer and away from the main road, but it is not waymarked.

Dating back to the 10th century Castildelgado was originally known as Villipún (or Villa de Pun). Its most famous son was Francisco Delgado López (born 1514) was a priest, theologian and inquisitor who attended the Council of Trent (1562-63) and later went on to become bishop first of Jaén, then of Lugo and finally archbishop of Burgos. Whilst bishop of Jaén the king gave him Villipún and authorised him to change the name Castildelgado.

The parish church (Iglesia de San Pedro) is in the late Gothic style and dates from the 16th century and contains the remains of Francisco Delgado. In the alterpiece there is an image of the Virgin and the Child which dates from the 13th century.