But, it will take the mystery out of the time and distance. And, you will learn something about yourself physically. The point is your can do it. And, you can do it now. There are no limits.
People run across continents.
I think the most interesting thing about me is that I don't have any particular athletic talent. When I set my marathon pr, I was eagerly running 140 miles per week. I have other pretensions, but I have never considered myself an athlete. I have enjoyed running. I have enjoyed the process of setting and meeting goals - and, setting new goals.