Posted: 06/05/2012 at 17:57
Having done this event after training 3 months I can tell you it is possible (i did it in 1.54 the first time) have done it a second time as well.
I would try and get off the treadmill and outside as much as possible- it is an undulating route the treadmill will not prepare you for this)
Your 4 miles is a good start, i would just take it steady and build up your mileage. I kept a log of each run so i could track improvements. I can't really help on the footfall issue as its not something i have experience of, defo keep an eye on it...
Perhaps slow down and concentrate on your form? plus you might just be expecting too much..i mean it is your first 4 miles you're bound to ache afterwards, go easy on yourself