I started running again this summer 08 after exactly ten years of being inactive. Ten years ago, in high school, I did run on the cross country team. I was never super fast, but I did okay. Now, I am 27, 5'6", and 110 lbs, and made it from the couch to 6.5 miles in two weeks with relatively no pain. But now, out of the blue, I can't get any farther. In fact, I seem to be getting slower! I am not overtraining - I usually take one to two days off between runs, and have only been doing some very mild weight training between runs. What gives? I have read that alot of runners hit a plateau at about 7 miles - is this true?