can anyone give me some advise on a persistent foot injury I've got? I've been running for around 4 years and have never had a problem with my feet. A few months ago my left foot felt very painfull along the top of it after a long run. I thought it might be a stress fracture so I rested up for 4 wks then went for a short run and the pain came back. I also started getting severe pain at the back of my heel. This seems to subside after walking on it. I rested up again for 6 weeks then tried a short run and again the pain came back. I went for an x-ray but there were no signs of a stress fracture nor what they all hotspots where a fracture might be about to occur. I did an 8 mile run on saturday and by the end of it I was in severe pain. Strange thing is when i stopped running the pain subsided fairly quickly and today feels absolutely fine. I'm signed up for the Berlin marathon at the end of September but I doubt i'll be able to do it at this rate as I can't train properly. I'm at a loss as to what the problem is.