When Chris ran a half marathon while she was only half way through her pregnancy, she got some interesting looks. I commend her for it. It looked hard. But this gal ran a half in the Chicago Marathon and gave birth on the same day! "I got the OK from my doctor to run half, and my husband ran with me and supported me along the way," Miller told WGN-Channel 9 from her bed at Central DuPage Hospital. "I ran half and walked half, that's how I finished. "Everybody just kind of stared as I'm running by.” It used to be common to discourage a lot of exercise while pregnant, and some people are still of that mind. That is why people give strange looks when pregnant women run races. As long as you are not just getting started with running, most doctors will give the okay and even encourage it as long as you are being smart about it.