When I walked part of the Camino a few years back, day tour groups seemed to walk a portion of it for a couple hours only. Tour busses were at strategic locations for those who didn’t want to walk any more. The Basque tour itinerary says it’s all day: “Strenuous walking: 2–8 miles throughout the day with lots of hills, stairs, and uneven terrain.” By saying 2-8 miles I get the impression you can do as little as 2 miles or do the entire 8.
In the link provided in one response it has Alto de Perdón to Church of Saint Mary of Eunate. Alto de Perdón is a hill a few miles outside of Pamplona. It affords some nice views of the countryside. It was seen in the movie “The Way” with Martin Sheen if you’ve ever seen it. Both it and the church are in fairly remote locations, meaning, neither is in a town.