M. J. Eberhart, aka the Nimblewill Nomad, was a 60-year-old retired doctor in January 1998 when he set off on a foot journey that carried him 4,400 miles (twice the length of the Appalachian Trail) from the Florida Keys to the far north of Quebec. Written in a vivid journal style, the author unabashedly recounts the good (friendships with other hikers he met), the bad (sore legs, cutting winds and rain), and the godawful (those dispiriting doubts) aspects of his days of walking along what has since become known as the Eastern Continental Trail (ECT). An amazing tale of self-discovery and...