You'd be surprised how much time you can pull off your running. Especially if you are just talking about 1 mile flat out. My wife dropped over a minute off her mile ( she is not a runner) in 3 weeks of running maybe twice a week. I ran a 5:40 quite consistently ,but when you run 5:40 next to decent high school milers you get smoked every time. -I ran a 5k race on March 29th in 22:22, so another 17 second drop. I have been running easy since then just trying to get my weight down. Wondering where 2 more minutes will come from!