Hey man, I already listed my reasons for why I run on the mill in the winter. I agree that I feel like a gerbil, but it beats the alternative and it lets me run 130mpw when the temps are in the teens. I'm not going to list PR's, but I think the treadmill has done me just fine over the years, and you aren't going to change my mind. This thread was intended to ask a question about the effect of an incline and people's views on whether or not it should be used to simulate flat ground running outside. I appreciate that you are such a stud and I commend you for your stick-it-to-the-man mentality. I'm sure you will beat me next time we race :)