Many athletes are seeking new and novel ways of pushing their limits, and the challenge of running back-to-back races is certainly one way to test the boundaries.

During holiday parties when people used to ask me what I did for a living, I would tell them I sold resort timeshares. That was an effective conversational nonstarter, until I met someone that actually did sell resort timeshares.

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.

Dean Karnazes Quotes