I ran 4 miles on the treadmill tonight. Early in the run I ramped it up to an audacious 6 MPH, but I started to feel it in my right knee, so I backed off to 5.5 MPH. I varied the speed between 5.0 and 5.5 depending on how I felt, but managed to get the 4 miles in within about 45 minutes. Not great, but not terrible.
Both hips were a bit sore -- possibly due to playing hockey 2 nights ago, and my right knee was a bit sore tonight. But I went and rode Gamble for about 45 minutes and as I write this post, nothing hurts.