With the excuse that our dog needs a walk, we do a 6 km circuit every day of the year. It's fairly rough ground going between one coffee plantation and another. When we have more time, we walk a beautiful higher loop. Once in a while, especially before leaving for a Camino, we try to do a hike every week. I have never walked with my pack here. (I would really feel stupid). So as far a stamina and muscle problems, we seemed to be OK. I had a very badly fitted pair of boots the first time, which resulted in many blisters. The last two times, I had one mini blister (my own fault), so I think one really has to get to know ones limitations as far as feet are concerned. In general, I found that the worst sufferers, as far as blisters and leg problems are concerned, were among the younger crowd, probably because they immagined that they were fit and therefore didn't need the preparation that we elder generation knew that we needed! My husband has now walked the Camino with me on three different occasions. The first time, only a short one (8 days), second time Najera/Santiago and last year Roncevalles to Santiago. I think he is an exception in that he has never had even one blister! Anne