In September 2008 at 18 st, I decided to do something about it. I began walk-running, dieting and rowing. I have a badly injured leg form a hurling injury a few years back and I let myself go to the dogs. After a few weeks I was running 5-6 miles non stop and decided to run the Belfast marathon in 2009. I trained hard, did a 5mile race on boxing day with my wife (an ex international cross country runner) along with 3000 other hardy fools and was getting into great shape. I did a half marathon in March the following year and got up to 22 miles and was tapering down three weeks before the marathon when I badly damaged my hip and ended up not being able to do the marathon.
I never enjoyed training for something so much and would love to get back at it but have been told to forget the long distance stuff - osteo arthritis in the hips wont allow it. I would encourage anyone to take running up and go slowly at it to start with and find a pace you are comfortable at - and good luck with injuries - you will get a few - but if you get good shoes and build yourself up with sensible goals you will finish your marathon - I recommend " The Non-Runners Marathon Trainer" by Whitsett, Dolgener & Kole, an excellent source of tips and tricks.