Amber Miller of suburban Chicago— who was nearly 39 weeks pregnant when she started the 26.2 mile event— is quoted as saying that she felt contractions minutes after crossing the finish line of the annual race.
According to the ESPN report, "The 27-year-old is an experienced marathoner who found out she was pregnant after signing up for the race months ago. [Miller] figured she'd play it by ear on whether or not she'd run. When the baby hadn't been born by Sunday, she got clearance from her doctor to half run and half walk the race.
When the contractions became regular after crossing the finish line, she stopped to eat a sandwich and then went to the hospital. Her baby girl, June, was born at 10:29 p.m., weighing 7 pounds, 13 ounces.
Miller finished the marathon in six hours and 25 minutes and 50 seconds, "not her personal best, but she did beat her husband," the Chicago Tribune reports.
Running is a great form of prenatal exercise, if you're not a high-risk pregnancy and have experience running in the past. Some runners are able to keep going many months into their pregnancies. Check out our Truth About Prenatal Exercise page for myth-busting information will help you get the activity you need. Remember, you can't "shake your baby loose."
Then head over to our Exercise Guidelines page for essential workout information and weight-gain guidance for pregnant women.
For a more personal perspective, one mom shares her story of how running during her pregnancy helped her connect with her body and the developing baby she was carrying inside of her.
Maria Vega is Fit Pregnancy magazine's copy editor.