These plans are terrible. In particular, the marathon program recommends a 26 mile training run followed by a three week taper. No one recommends 26 mile training runs outside of the very top elite athletes (and for very, very good reasons). It just isn't actually good for you to run that long, especially when you're only running three days a week. Seriously, that marathon program, if run on cement, would likely cause a stress fracture in a new runner.