Here's my situation. I'm not a complete newbie - I've run three half marathons, and one full marathon, and have a place at Tatton HM in a month. Unfortunately, I've been suffering with plantar fasciitis, for the past six weeks or so: nothing terrible, but I want to give it a chance to go away. I've kept off my feet most of the time, and have been out on the bike and swum a lot more (even contemplating a tri now), and feel pretty good cardio-vascularly (is that a word?).
Anyway, the PF seems to have pretty much gone, so I am wondering if I am in any position to build up the running again in time to run at Tatton. I was running about 25 miles a week, but obviously would not go straight back to that. Any thoughts? Am I risking the PF flaring up again? What are the chances of me being reasonably race fit in a month?