Stiffness in my knee didn't start until I had passed the three mile mark, but I think it was just as sore towards the end. It's pretty clear that I'm not going to be able to get in 20 tomorrow, but I should at least be able to get in five or more with some cross-training. I didn't ice my knee this morning on the way to work and didn't take any Motrin either. If anything, my knee was slightly less stiff when I got out of the car. As near as I can tell, the pain results from quadriceps tendonitis. It could be cartilage damage under the patella, but the fact that it disappears overnight and takes a while to reappear would suggest microtears in the tendon instead of more permanent damage. | 