Its strangely compelling. The time i run for increases, the distance increases, my fitness and stamina improve - and I just want to do more!
Having said that, 13 miles puts me just under the two hours. A good time for an amateur 1/2 marathon but I don't really want to push beyond that right now.
A marathon goal is possible, but I'm really not thinking that far ahead about running right now. The half marathon? I'm gonna do it - I'll sign up at the end of the month!!