Run Fat Boy Run

Five years ago, nervous bridegroom Dennis (Simon Pegg) left his pregnant girlfriend Libby (Thandie Newton) at the altar. Now, he realizes he made a big mistake and is determined to win her back. Unfortunately, Libby is involved with a handsome, attentive and fit financier (Hank Azaria), who is set to run in a charity marathon. Hoping to impress Libby, out-of-shape Dennis enters the race, even though he only has three weeks to prepare.