I'll be running again next year - just heard this morning that I have a definite Gold Bond place with Anthony Nolan.
I hadn't run since school last time (2001), though I was going to the gym three times a week (and not enjoying it). Gave up the gym, and trained for FLM instead. My longest run in training was 18 miles, and was managing a steady 9 min/mile pace throughout.
A fortnight before, the dodgy disc at the base of my spine went: I managed, through use of my physio's exercise regime, to get it straight in a few days, and ran anyway. This was probably my biggest mistake.
On the day, I blew up totally, my legs were in agony, and I took an hour longer to finish than my training times said I would.
Seeing the physio a few days later to see why my legs were still in so much pain, she explained that it was my disc that was the problem, not my legs - it was "reflected pain" I was experiencing - and that I probably shouldn't have run. And then put my back straight (again).
So my aim this time is (a) to work on my back and ensure that it's strong enough to cope, (b) start training earlier (done that), and (c) assuming I manage (a) and (b), to beat my previous time by an hour!