the logical answer is by building it... you aren't going to go from 0 -60 overnight, but overtime you will get there.
If you google "couch to 5k", on the cool running site, you'll find a verygood run ning program that will take a person from couch potato to running a 5K - the same concept could be applied to people who already run - every week, add in more distance... and little by little you'll get the distance and speed you want