I'm planning on signing up for a marathon around April and my long runs are currently up to 20 miles (so, in theory at least, I could head out and do one now). Suppose I could just start on a marathon plan but, right now, at the start of the plan, that would mean a significant drop in weekly distance. I could also start a plan and just increase the length of the long runs.
Doesn't help that I'm currently going through some winter running blues. I can still push myself out the door but I can normally head out without having to psyche myself up first. I guess that shows as later starts and a general lack of organisation.
Any thoughts on this? Would I be better off keeping up the distance or cutting back and building back up again?