Well, I did give it a try tonight on that track. I ran on the treadmill (with shoes) for about 15 minutes and then got off because I was having some pain in the inside/back of my left knee. Then I went up to the track and ran barefoot up there for about five minutes, and it felt great. However, after I finished stretching and started down the stairs to leave the building, I noticed some twinges in that left IT band area--dang it!! Given the discomfort I had on the treadmill, I am inclined to think that's what did it but I am not sure--that track is fairly small and is banked though I did alternate direction on it. So I am taking Aleve, icing, foam rolling, stretching and taking a few days off before trying to run again. The weird thing is I don't even think the IT band is tight at this point, and foam rolling/rolling on the ball on the floor doesn't really hurt in that area this time. That's sort of bad news because it means it's not just vastus lateralis trigger points (which aren't that hard to get under control) this time. Ugh.