When I walked the Camino after turning 65, I thought I would be one of the older people walking but I was truly mistaken. I met many, many, many people in their 70s and some in their 80s who were walking just fine. Slower maybe (but that's a good thing when there is so much to see, hear, eat, and drink), but still walking along. I ran into one couple (Italian) who were arguing at the top of their lungs. As I passed by, I said the usual greeting and we started talking. After a bit (about a minute in Camino time), you get to the point where you can be frank with the walker. I asked them why they were yelling at each other. They responded that they weren't yelling, just having a slight disagreement over how long to walk that day. After 60 years of marriage and a little loss of hearing, it was how they "stayed in love". They were both in their 80s (taking about 45 days to walk). Just another day on the Camino.