Appalachian Trail Data Book - 2013 Author:Ed., Daniel D. Chazin How long is the Appalachian Trail this year? It's grown to 2,185.9 miles as of the end of 2012! — Sometimes termed "the bible of A.T. hiking," each year's Data Book consolidates the most basic information from 11 detailed guidebooks into a lightweight table of distances between major Appalachian Trail shelters, road-crossings, and landmarks. It i... more »s divided according to the guidebook volumes (one state or two or, for Virginia, parts of a state) and updated each fall to account for Trail relocations, new (or removed) shelters, and other changes. In addition to codes for lodging, food, water, and other essentials, the Data Book is keyed to both the individual guidebook sections and to the separate official maps. Day-hikers and long-distance hikers alike rely on this volume for armchair planning as well as on-the-trail orientation.« less