My knees have been hurting pretty much everyday especially after a ride and I have been riding every day I am at almost 4 miles a day . My knees have have hurt everyday all the time. I was thinking you weigh over 300 pounds your riding up hills, peddling as fast as you can. Your suppose to hurt. Then I started thinking. I have had back problems and they hurt like the dickens I made it better by exercising. I exercised my back and the pain went away like magic. I googled knee strengthening exercises yesterday did about 5 minutes and when I got up this morning I was pain free. Go figure.