A philosopher from Minnesota returns to her childhood home to join a handful of adventure racers for the "Arizona Trail Race 750". The world's longest trail bike race, the AZTR runs 750 rugged miles along the Arizona Trail from Mexico to Utah. Enduring complete bike failure (which ends Sarah’s shot at the women's course record) and the death of a family member, Sarah finds a way to make it to the Grand Canyon. There she faces the greatest challenge yet: a marathon trek through the canyon with her mountain bike strapped to her back, all while coming to terms with what it means to be home. Her amazing story follows a quirky cast of endurance bike racers, interweaving adventure, philosophy, Arizona history and family lore.