In the summer of 2018, ultra-endurance athlete Grace Ragland set off on the world’s longest mountain bike race, the 2700-mile Tour Divide. This is the story of Grace’s journey from the snow-capped peaks of Banff, Canada, down the spine of the Rocky Mountains, and finally into the forbidding desert of New Mexico. Grace battled many difficulties, including an infection that put her two days behind the nearest competitor, Multiple Sclerosis, the elements, demons from her past, as well as a secret that even she didn’t know. Ride with Grace and laugh at her hilarious interactions with the oddballs she encountered along the way. Divide By One is an adventure story with heart and humor that shows how indomitable will and perseverance can change the way we see our limitations and our world.