Mark

Tekla, son of an ancient shaman, loses Ka Li when she is torn from his life by a brutal tribe of Denisovans in a Late Pleistocene kidnapping. Ka Li escapes but is unarmed and forced to flee across the Bering land bridge where she becomes hopelessly lost in the endless tracts of North America. Only Tekla cares enough to search for her over the years. As Ka Li survives fierce predators and scarce resources, she leaves behind a series of signal cairns to help Tekla find her.

New York Times best-selling author and ultramarathoning legend Dean Karnazes has pushed his body and mind to inconceivable limits, from running in the shoe-melting heat of Death Valley to the lung-freezing cold of the South Pole. He’s raced and competed across the globe and once ran 50 marathons, in 50 states, in 50 consecutive days.

Growing up in Santa Monica, California, Julie Weiss would do almost anything for love. She drank, she quit school, she stole - and she ended up a mother in her teens. Years later, overweight and depressed, she put one foot in front of another and found a new road beckoning. In 2012-13, Julie - aka the Marathon Goddess - ran 52 marathons in 52 weeks.