I run crosscountry at my highschool, and am fairly decent. i can do around a 5 min mile and about a 19:30 5k. (end claim) so my friend, whos is about 5' 3", and probably 180lbs who tpos out at about a 10 min mile, bet me that by the end of the summer, when our school has a "fun run" he can beat me in a 2.5 mile race. the bet ended up being whoever lost had to buy a new pair of skis for the winner. this seems like an easy pair of skis for me, but my question is, is it even physically possible for him to get in that good of shape, and become a good distance runner, merely from running a few miles everyday, or will he just end up losing a bit of weight, and still be slow.