If I were you, I would try to find a local running store, or even go to a local high school's cross country/track coach and they will be able to help you create a workout plan that will fit specifically for you. Some people can start out running for the first time and not have much trouble with 4-5 miles while others aren't the same. But if anything,make sure you start out easy and slowly build up.

The thread was started 2.5 yrs ago.

Heck, he better be ready physically by NOW!!!!

yea i just joined the reserves here and this summer im gonna be completly screwed if i dont start working out starting now