I started running....again....and again I have the same problem. After almost two weeks of run/walking on flat roads, I got a cramp/knot in my left calf and couldn't get it out on my run yesterday. I stretched before hand, walked to warm up, have new running shoes and had to stop after a half mile so I wouldn't pull anything like last time (pulled it and could barely walk for 2 weeks). I stopped and stretched during the run, tried to rub it out and ended up walking 3 1/2 miles and STILL had the knot. My calf is sore today but I'd like to know whats causing it. My 5K is in 3 weeks and I'm lucking if I could run 1-1 1/2 miles without stopping at this point. It was 52 degrees yesterday and I had knickers on if that helps.

Thanks for your help ladies - this is getting frustrating and I don't need an excuse to stop again