Ali, you heard that one from me, and possibly Johnnie Walker. We used that path to get him from Villalon to Moratinos a couple of years ago. It follows the P-611, a little two-lane county road that goes due north from Villalon, passes through Boadilla de Rioseco and right into Villada, where a nice albergue sits on the far edge of town. (I think it was originally opened with the waymarking of an alternative path off the N120 from the
Camino Frances, connecting Carrion de los Condes with Sahagun following an old drovers´ path via San Roman de la Cuba. Almost no one uses it but road-bikers.) The albergue keepers in Villada are enthusiastic and a bit lonely, so the odd pilgrim who finds himself there is very well cared-for indeed. Villada is also home to Pili´s Casa de Comidas, home to the finest Menu del Dia I have encountered in the province!
From Villada the path to Sahagun is well-marked via Grajal de Campos. If you want to come straight north to meet the Frances and walk right into Moratinos, just keep straight on the P-611, alongside the Rio Templarios, and you will see your first Frances waymark about 10 km. along, facing the wrong way, dropping you due west on the Camino between Terradillos de los Templarios and Moratinos. From there it´s about 1.5 km. to town, past the labyrinth.
From Moratinos it´s 9 km. to Sahagun.