She was surprised by his lofty goal but soon learned that he was running to fulfill his wife's dream of running a marathon. He cared for her at home and for another 5 years after that when she was in a nursing home suffering from Alzheimer's. She's passed on now, but he's since qualified for the Boston Marathon next year which is pretty damn cool.
So why do I run? When I first started, I ran because I thought it would be a good way to lose weight and get in shape...but I've since found that I like the feeling of accomplishment and satisfaction after I've finished. I love how strong and capable I feel because I didn't think I'd be good at it and I've since proven that I am completely able. Getting healthy and fit is a lovely by-product.
Having said this, it's still a challenge to get my butt out the door most days - particularly when it's so damn hot outside!