I was like you as well. Hated gym class throughout all of my school years and the mile was horrible.Had my second daughter in Jan 2010 and my goal for the year was to complete my first 5k. Was pretty unmotivated for a better part of the year and a friend of mine talked of her 2nd triathlon and I thought, how cool, and that I had really slacked on my goal for the year.So that next day, I loaded both my girls up in the double stroller, went to the park, and slowly started my routine. 7weeks later, I ran my first 5k, the whole thing. It was such an accomplishment and my husband, who is a runner, and my two girls were right there with me the whole step of the way.It was such an awesome experience and one that I will never forget. This year, in August, i completed my first Sprint Triathlon and I think I am hooked. It was so exhilarating!!! Good luck to you, even if you have to walk, it'll be such an accomplishment for you. The atmosphere of the run, the people, the excitement, the music, the loud speakers, and the yummy food afterwards, will be something that you will crave more of, I'm sure, after your first. HAVE FUN!!!