Its none of your beeswax you snotty nose little brat how old I am but this past bowseason I averaged 12 to 18 miles a day for weeks where nothing is flat. If you young whipper snappers try to keep pace with me your dang tongue will be hanging out of your mouth. I took aguy 15 years younger than melast year and he is a black belt and a health nut and he didn't evenlast it a week.
I don't think age has a thing to do with it but how phsyically fit you are is the most important.

Bobby