Does your knee start hurting during a run - or feel sore later that day or the next morning? Knee pain when running can develop for several reasons. Common possibilities include irritation around the kneecap, tendon problems, a sudden increase in training, muscle weakness or fatigue, previous injuries, or changes in how your hip, knee, foot, and ankle are working together. Sometimes running-related knee pain settles when you temporarily reduce your training. But if the pain keeps … [Read more...]