Appalachian Trail

Overview & Who It's For

The Appalachian Trail represents one of backpacking's ultimate challenges, demanding significant physical and mental preparation. While the trail is technically accessible to hikers of all skill levels for section hikes, the rugged terrain, substantial elevation changes, and unpredictable weather make this considerably more demanding than most other American long trails. Thru-hikers typically take 5-7 months to complete the journey, though many choose to tackle it in sections over multiple years. The trail is ideal for experienced backpackers seeking a serious challenge and those willing to develop their skills through adversity.

Permits & Regulations

Most of the trail requires no permits, but three critical sections do: Great Smoky Mountains National Park ($40 thru-hiker permit, valid 38 days), Shenandoah National Park ($9 per person plus $6 reservation fee), and Baxter State Park in Maine (free summit permit for Katahdin, obtained up to 7 days in advance at the ranger station). Additionally, AMC-managed sites in New Hampshire and southern Maine charge approximately $10/night per person at high-use backcountry locations. Obtain permits well in advance, especially for the Smokies during peak season.

Best Season & Weather

Northbound thru-hikers typically start in Georgia between March and early April, while southbound hikers begin at Katahdin in June. This timing avoids Maine's harsh winter conditions and Georgia's oppressive summer heat. Section hikers should target March through October, though weather varies dramatically by region and elevation. Expect hot, humid conditions in the mid-Atlantic summer, where heat stroke and exhaustion are genuine concerns. The White Mountains and higher elevations can see snow any month of the year, with Mt. Washington recording wind gusts exceeding 100 mph on 30-40 days annually. Cold rain poses the most serious weather hazard throughout the trail, capable of causing hypothermia even in above-freezing temperatures. Weather changes rapidly, particularly at higher elevations, so carry appropriate layers regardless of forecasts.

Water & Resupply Strategy

Water availability is generally excellent, though purity requires attention—treat all sources. Guidebooks mark spring and stream reliability, but seasonal fluctuations affect availability, particularly during summer droughts. Carry 2-3 liters capacity and plan to refill approximately three times daily. Some sections feature abundant water sources within easy reach of the trail, while others require careful planning to avoid dry stretches.

Resupply options occur roughly every 3-5 days, with the trail passing within reach of towns frequently enough that hikers rarely go more than 50 miles between opportunities. Choose between buying supplies in trail towns (offering flexibility and variety) or using mail drops (better for budget-conscious hikers who can buy in bulk or prepare dehydrated meals). Most successful thru-hikers use a hybrid approach, adjusting their strategy as they learn what works. Plan for 8-10 miles daily as a beginner, increasing as your trail legs develop.

Hazards & Challenges

The AT demands respect for its difficulty. Elevation change per mile exceeds other major American long trails, with particularly brutal sections in the White Mountains and Maine. In Southern Maine, expect to average just 1-1.5 miles per hour navigating rooted, rocky terrain requiring hand-over-hand climbing. The Whites feature similarly challenging conditions with sustained elevation gain, technical rock work, and exposure to severe weather above treeline.

Wildlife encounters include black bears (practice proper food storage), venomous snakes (timber rattlesnakes and copperheads in rocky sections), and a high concentration of deer ticks carrying Lyme disease in the Mid-Atlantic and New England. The Hundred Mile Wilderness presents hazardous river crossings that can swell rapidly after heavy rain.

Getting There

Most northbound thru-hikers begin at Springer Mountain in Georgia, accessible via shuttle from Atlanta (90 miles). The southern terminus at Amicalola Falls State Park offers easier access with parking and facilities. Katahdin in Maine marks the northern terminus, reachable through Baxter State Park—plan logistics carefully as services are limited. Section hikers benefit from numerous road crossings and trail towns throughout, making access relatively straightforward for shorter trips.

Practical Tips

Start with a thorough shakedown of your gear and skills before committing to a thru-hike. Many aspiring thru-hikers don't make it past the first few weeks due to inadequate preparation. Your strategy will evolve—what works in Georgia often fails in Vermont, so remain flexible and learn from other hikers. The trail community is remarkably supportive; don't hesitate to ask questions or accept help. Guidebooks like "The A.T. Guide" provide mile-by-mile details essential for planning daily mileage, water sources, and resupply stops. Consider starting with section hikes to build experience before attempting a thru-hike.

Trail Sections