Walking the Olvidado this year, I saw signs for the Camino Lebaniego. I thought, that can't be right, the Lebaniego doesn't come down this far. Turns out there is a Camino Lebaniego Castellano that does go through Cervera de Pisuerga. I have scanned the brochure I picked up in case anyone is interested. You will see that my copy of the actual map has some overlap but should be easy to figure out. I do not think this is well marked and I met no one who knew anything about it, not even the woman in the tourist office in Cervera who gave me the brochure!