Five years ago Dennis (Pegg) was at the altar about to marry Libby (Newton), his pregnant fianc e. He got cold feet and ran for the hills and he s been going in circles ever since. When Dennis discovers Libby s hooked up with high-flying-go-getter Whit (Azaria), he realizes it s now or never. He enters a marathon to show he s more than a quitter but then finds out just how much sweat, strain and tears it takes to run for 26 miles. Nobody gives him a chance but Dennis knows this is his only hope to more than a running joke.
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