There are plenty of Post Offices on the trail and many others within 5 miles. I resupplied my thru hike with 30 mail drops and the farthest I hitched was 9 miles. There are also businesses on the trail who accept mail drops either by US Mail or UPS. I can list the Post Offices I used here, a complete list is in The Appalachian Trail Data Book available from the ATC or check out ALDHA’s online version of “The Companion” at
http://www.aldha.org/comp_pdf.htm
Suches GA 2m W, Fontana Dam NC 2m W, Hot Springs NC on AT, Erwin TN 3.8m W, Damascus VA on AT, Atkins VA 3.2 W, Pearisburg VA 1m E, Troutville VA 0.8m W, Waynesboro VA 4.5m W, Linden VA 1m W, Harpers Ferry WV 0.5m W, Boiling Springs PA on AT, Port Clinton PA on AT, Delaware Water Gap 0.1m W, Unionville NY 0.4m W, Bear Mountain NY 0.3m E, Kent CT 0.8m E, Tyringham MA 0.9m W, Cheshire MA on AT, Manchester Center VT 5.5m W, Killington VT 2.2m E, Hanover NH on AT, Glencliff NH 0.5m E, Gorham NH 3.6 W, Rangeley ME 9m W, Stratton ME 5m W, Caratunk ME 0.3m E, Monson ME 2m E.
Not all of these towns are good places to find stores. Tyringham has nothing and Caratunk has a hiker B&B and others the stores may not be as close as the P.O. I’ll leave those details for others who remember better than myself.
Celt