Running a marathon is challenging under any circumstances. Running a marathon while pushing your spouse in a wheelchair is incredible. But doing so for many marathons and on daily runs that now total more than 12,000 miles ... that's just awe-inspiring.

In 1987, Lynn Parks was preparing for her wedding day when she was in a horrific car accident. Seven months later she awoke from a coma to see her fiancee, Jamie, by her side. During the years of therapy that followed, Jamie began taking Lynn on his many runs around the neighborhood and on races.

It was said Lynn would never stand or walk -- but seven years after her accident, she walked down the aisle and married Jamie. It was said she would never have children -- but in 2000, Jamie and Lynn welcomed their daughter into the world. Both Jamie and Lynn always dreamed of competing in the Boston Marathon and in 2008, they finally did.

Discovery Health channel is featuring Jamie and Lynn's inspiring story this Sunday. I'm going to be watching ... in fact, I've already got a reminder set on my TV. How about you?