When Anthony L. Copeland-Parker and his partner Catherine were in their fifties, they learned that he needed a heart-valve replacement, and she had early-onset Alzheimer's. Their past experience as endurance athletes lead them to react accordingly--to sell their home, retire from their jobs, and become nomads, running marathons and half-marathons all over the world.Anthony L. Copeland-Parker's Running All Over the World began as a blog...