Slow and Painful

My long run was hard work this morning. 21.5km at 10.7km/h. Slower and shorter than last Saturday, but for some reason much more painful. My legs and feet are still feeling quite sore. It's funny how the body works, because my training was much lighter this week. After a fairly slow run on Wednesday and no run on Thursday (I was slack), I thought I'd be raring to go. Hopefully next week will be better.