I'm looking for a bit of advice. I used to do a lot of running and did a couple of marathons a couple of years ago. I have kept it up a bit and probably have done 2-3 days a week for the last 9 months at 30-40mins. However I have put a few stone on through diet and drinking.
My goal is to get a sub4hr marathon. Is 12 weeks (Chester Marathon) a realistic time frame to get fit? The alternative is 40 weeks away (Manchester Marathon) which is long away. Is it best to do a plan for 40 weeks ahead? Most of the plans are only for 18 or 20 weeks.