Do you know what. In the end I just registered as I knew I'd wimp out otherwise.
Last time I started my training in January (having never ran before) and died at about 10.5 miles.
This time I want to start early with a slow structured training plan and feel that I can achieve the distance by Christmas. To put in context I went for my first run in over a year on Sunday after watching the marathon. I had to stop at 2 miles for a minute or so and then plodded the last mile. I realise it was a hot day to start again but I was shocked just how hard I found it.
I would build up, as [MENTION=27279]dazzer6666[/MENTION] said, between now and Christmas. No need to go over 15 miles before Xmas. Easy once weekly long runs in December of 10-12 miles in 2 hours would be more than enough. You don't want to get tired before you start the final 16 week programme at the New Year but you want to be fit and ready to take it on.