When I ran across America, for 75 days I ate 10,000 calories a day. I still lost about five pounds.

Don't run with your legs, run with your heart.

Running is a simple, primitive act, and therein lays its power. For it is one of the few commonalities left between us as a human race.

Adventure books are my personal favorites. 'The Endurance,' a story about Ernest Shackleton's legendary Antarctica expedition, or 'Into Thin Air,' Jon Krakauer's personal account of the 1996 disaster on Mt Everest, are two notables.

I'm not trying to take more of the pie for myself. I'm trying to make the pie larger for everyone.

I run because it always takes me where I want to go.

If you just go out there and run 100 miles, it breaks down a lot of barriers in terms of self-imposed limitations.