TheAppalachian Trail Data Bookis essential for A.T. hiking and planning and the over-allbest buyin the Ultimate A.T. Store; an indispensable summary of guidebook basics since 1977. This pocket-sized, paperback handbook is a consolidation of the basic information from all 11 official Appalachian Trail Guidebooks, into a lightweight table of distances between major A.T. shelters, road crossings, and features. The Data Book is divided according to the guidebook volumes andupdated each yearto account for relocations, new or removed shelters, and other changes. It is also keyed to maps from the official Appalachian Trail Guide Sets. Batteries not required.