Shame you dont have a beach near by. I ran for 2 weeks, 5 days a week 2 miles along the beach through work, managed to get it from 22 mins down to just over 15 in the end. Once you hit that soft stuff though, f**k me Im also a chub at 14 stone, would have been better if I was lighter, having tight calf muscles and that weight, kinda hurt a lot for the first few goes.