Deborah McFadden had no idea that when she adopted her daughter Tatyana from a Russian orphanage that she would grow up to become an elite athlete. Tatyana McFadden was born with spinal bifida, a congenital disability that had paralyzed her

Famed ultramarathoner (and AQ contributing editor) Dean Karnazes is no stranger to monumental running challenges. Ten years ago he ran 50 marathons in fifty states in fifty consecutive days. He’s also run350 miles in under 81 hours, foregoing sleep for