Flotrack's Jerry Drever talks with Deena Kastor on the mental side of running and what brought her to the marathon. Deena, coming off an Olympic medal in 2004, had high hopes in 2008. Her foot broke and she was unable to finish the race. She talks about the moment she new the marathon was her calling. Deena also gives the key to her "durability" and some goals for London this spring.
