Alistair Humphreys cycled around the world—a journey of 46,000 miles. This inspiring story traces the second leg of his travels—the length of South and North America, the breadth of Asia and back across Europe, crossing the mountains and salt-flats of South America, canoeing the Five-Finger Rapids of the Yukon River, and braving a Siberian Winter with only the flimsiest tent to protect him from the elements.