Long-distance walking has produced a literature of its own, and AWOL on the Appalachian Trail belongs squarely to it. Our catalogue shelves the book twice over, under sports and outdoors and under travel, which is the correct double filing for an account of a route that is at once an athletic undertaking and a very slow journey through a country.
What David Miller offers, on the evidence of the work, is the record rather than the argument. Trail writing at its best is a daily ledger: weather, feet, food, the people met at shelters, the arithmetic of distance. It is a form that rewards patience and honesty far more than drama, and it has quietly become the outdoor genre with the most devoted following.