Any goal worth achieving involves an element of risk.

Running back-to-back races requires a certain tactical prudence. Going too hard in any one race might jeopardize your performance in another. Maintaining proper hydration and caloric equilibrium also becomes increasingly critical.

The human body has limitations. The human spirit is boundless.

I love to run and I have some tips to keep it fresh and novel. I rarely use the same route twice. That keeps things new.

When I was running across the country, I was doing 40 or 50 miles a day in sleeting snow with zero visibility for five or six days in a row. Ten to 12 hours of running in that is monotony beyond belief.

I have an ElliptiGO. It's a standup bicycle. You don't pedal; you stride on it. It allows me to have the same striding motion as running without the impact.