I apologize in advance for the novel I'm going to write about my history with peroneal tendonitis. I've been running BF/minimalist for about two and a half years now on and off, mostly summers on and winters off. This is the first winter when I haven't taken a break from running. I first experienced pain behind my right lateral malleolus in the summer of 2010, after a few months of running in VFFs. I self-diagnosed it as peroneal tendonitis and have since switched to running BF in the summer. Now I'm running in VFFs again until the snow melts. This injury initially went away with rest, and last summer I went back to running BF and built up slowly to about 30 km/week, without the leg bothering me. But now it's back. I think my form has been slowly getting better throughout the time I've ran BF and is now pretty good. I didn't run at all in December, but then picked it up again and have slowly increased my weekly distance. Two weeks ago I hit an all-time high of 44 km, including my longest run ever (16.6 km). The familiar twinge had been slowly coming back for about a week or so, but as it didn't really hurt, I ignored it. Stupidly. After that week the pain was back, and now I've done the usual rest/ice/ibuprofen for a week and it's almost healed now. I'll try to go for a short run tomorrow and see how I feel. How can I prevent this from happening again? Is it really a form issue, or am I just too fragile to increase my distance at this rate, even though I don't think I've increased it very fast? I've used a wobble board quite frequently for a few months now and will continue doing so, in addition to some other exercises and stretches I've found online. Is there anything else I should do? I have my first half marathon coming up in exactly two months and I really want to be able to train for it injury free.