For those of you of a certain age (like me 47 when I started this year). Don't be worried by stopping and walking for a while.
This year after 20 years of non running I started training for the London Marathon. I followed John "The Penquin" Bingham's get you round run/walk training programme. I didn't start until the beginning of January by the time of the big day I had lost over 2 stone and i completed the marathon. No it wasn't a fast time but I did it. I started in the 'get you round ' with John Bingham, he really is a nice as they say!! and had an absolutely terrific day. Go for it!!