What the Appalachian Trail Is and Who Maintains It

The Appalachian Trail is a marked hiking path that runs 2,190 miles from Georgia to Maine, passing through or near 14 states. It is maintained by the Appalachian Trail Conservancy, a nonprofit organization, along with 31 volunteer clubs that each care for a section. The trail itself is public — you do not need permission to walk it — but it crosses both public land (national forests, state parks) and private property where landowners have granted right-of-way.

The trail is marked with white blazes (painted rectangles) on trees and rocks so you can follow it without getting lost. Shelters appear roughly every 8 to 10 miles, and most are three-sided structures with a roof and floor, built and maintained by volunteers. Water sources are marked on maps but are not treated or may provide to be safe without filtering or boiling.

The Appalachian Trail Conservancy publishes official guidebooks for each state section, maintains the trail database and shelter information, and manages the permit system for thru-hikers (people walking the entire trail in one trip). You can find current trail conditions, shelter locations, water sources, and resupply towns on the Conservancy's website and in their printed guides.

Key Takeaways

  • The Appalachian Trail runs 2,190 miles from Georgia to Maine and is marked with white blazes; you can walk any section without a permit, but thru-hikers need to register with the Appalachian Trail Conservancy.
  • Shelters are spaced roughly 8 to 10 miles apart and are free to use, but water from streams and springs must be filtered or boiled before drinking.
  • The trail crosses private land where owners have granted access, so camping is only permitted at designated shelters and campsites unless you have the landowner's permission.
  • Official guidebooks and maps from the Appalachian Trail Conservancy show shelter locations, water sources, and trail conditions; these are essential for planning and safety.
  • The busiest hiking season is spring through fall, with peak crowds in May and September; winter hiking is possible but requires cold-weather gear and experience.

Day Hikes Versus Thru-Hiking: What Each Requires

A day hike means walking a section of the trail and returning to your starting point in one day. You can park at any trailhead, hike for a few hours or the whole day, and leave. No registration is needed. You should carry water, snacks, a map, and a headlamp or flashlight in case you finish later than planned. Many people day-hike the same 5- to 15-mile section repeatedly or try different sections each time.

Thru-hiking means walking the entire 2,190 miles in one continuous trip, usually starting in Georgia in spring and finishing in Maine in fall (about five to seven months). Thru-hikers must register with the Appalachian Trail Conservancy before starting. Registration is free but required so the Conservancy can track how many people are on the trail and help with rescue if needed. You will need a backpack, tent or shelter, sleeping bag, stove, food, water filter, and maps or a GPS device. Most thru-hikers resupply in towns every few days, staying in hostels or hotels rather than camping every night.

Section hiking means walking a different part of the trail each year or season, eventually covering the whole trail over time. This requires the same gear as thru-hiking for each section but lets you spread the journey across years. No registration is needed for section hiking.

What to Bring and How to Prepare

For a day hike, pack at least two liters of water, a trail map or GPS device, a headlamp, a first-aid kit, and snacks with calories (nuts, energy bars, fruit). Wear broken-in hiking boots or shoes and bring a rain jacket. Tell someone where you are going and when you expect to return. Check the weather forecast and current trail conditions on the Appalachian Trail Conservancy website before you leave.

For a thru-hike or section hike, you will need a backpack (50 to 70 liters), a three-season tent, a sleeping bag rated for the season, a sleeping pad, a water filter or purification tablets, a camp stove, a headlamp, a map and compass or GPS device, and a first-aid kit. Most thru-hikers keep their base pack weight between 15 and 25 pounds. Bring a guidebook or read maps to your phone or GPS device; the Appalachian Trail Conservancy publishes official guidebooks for each state section.

Physical training matters. Walk or hike regularly for several months before a long trip. Start with day hikes and short overnight trips to learn what gear works for you. Many thru-hikers report that the first two weeks are the hardest as your body adjusts to daily hiking and carrying weight.

Shelters, Campsites, and Where You Can Sleep

Shelters on the Appalachian Trail are free and available on a first-come, first-served basis. You do not need to reserve them. Most are three-sided structures with a roof, sleeping platform, and a privy (outhouse) nearby. Shelters typically sleep 8 to 12 people, though some are smaller. Bring your own sleeping bag and pad — shelters do not provide bedding. In peak season (May through September), popular shelters fill up by mid-afternoon, so plan to arrive early or camp nearby.

Designated campsites are cleared areas near shelters where you can pitch a tent. These are also free and first-come, first-served. Some sections of the trail have no shelters or campsites, so you must camp in designated areas or at a shelter. A few sections require you to stay at a shelter or designated site — you cannot camp anywhere else. Check your guidebook or the Conservancy website for your section.

Camping outside designated areas is not permitted on the Appalachian Trail, even on public land, except in national forests where dispersed camping may be allowed (check with the specific forest). On private land, you must have the landowner's permission. Violating these rules can result in fines and damage the trail's access agreements with landowners.

Water, Food, and Resupply Towns

Water sources are marked on official maps and in guidebooks. These include streams, springs, and shelters with hand pumps or spigots. All water from natural sources must be filtered, boiled, or treated with purification tablets before drinking. Giardia and other parasites are present in untreated water. Carry a lightweight water filter (like a Sawyer Squeeze) or purification tablets as backup. Most hikers carry one to three liters of water capacity and refill at sources along the trail.

Resupply towns are small towns near the trail where you can buy food, take a shower, do laundry, and sleep indoors. Most thru-hikers resupply every three to five days. Towns are listed in guidebooks with distances from the trail and what services they offer. Some towns have hostels or budget motels; others have grocery stores but no lodging. Plan your resupply stops based on your pace and the guidebook information.

You can mail yourself resupply boxes to post offices in trail towns, addressed to "General Delivery" with your name. Call ahead to confirm the post office will hold it. Many hikers use this method to get specific food or gear they cannot find locally.

Seasons, Weather, and Trail Conditions

Spring (April to May) is the busiest season. The weather is mild but unpredictable — expect rain, occasional snow at higher elevations, and temperatures ranging from freezing to 70 degrees Fahrenheit. Shelters and campsites are crowded. Most thru-hikers start in Georgia in early April.

Summer (June to August) is warm and dry in most places, with temperatures often in the 70s and 80s Fahrenheit. Thunderstorms are common in the afternoons, especially at higher elevations. Bugs (mosquitoes, blackflies, ticks) are at their worst. This is a good time for day hikes and section hikes.

Fall (September to October) has mild temperatures, clear skies, and fewer bugs. Crowds decrease after Labor Day. This is considered by many hikers to be the best season. Thru-hikers who started in spring typically reach Maine in September or October.

Winter (November to March) is cold and snowy at higher elevations. Many shelters close or are not maintained. Hypothermia is a serious risk. Winter hiking requires experience, specialized gear, and careful planning. Most casual hikers avoid winter on the Appalachian Trail.

Check the Appalachian Trail Conservancy website for current trail conditions, including closures, water source status, and shelter maintenance updates. Conditions change with weather and maintenance schedules.

Rules, Permits, and Leave-No-Trace Practices

You do not need a permit to day-hike or section-hike the Appalachian Trail. Thru-hikers must register with the Appalachian Trail Conservancy, but registration is free. Some sections pass through state parks or national forests that may have their own rules — check before you go.

Follow Leave-No-Trace principles: pack out all trash, use established campsites and shelters, filter water at least 200 feet from water sources, use a camp stove instead of a fire (fires are not permitted on most of the trail), and stay on the marked trail. Do not feed wildlife or leave food out. Use biodegradable soap and wash at least 200 feet from water sources.

Shelters and campsites are maintained by volunteers. Keep them clean, do not carve into the shelter walls, and report damage to the Appalachian Trail Conservancy or the local volunteer club. Respect other hikers' space and follow shelter etiquette: arrive before dark, be quiet after 9 p.m., and leave early in the morning.

Frequently Asked Questions

Do I need a permit to hike the Appalachian Trail?

No permit is needed for day hikes or section hikes. Thru-hikers (walking the entire trail in one trip) must register with the Appalachian Trail Conservancy before starting, but registration is free and done online or by mail. Some sections pass through state parks or national forests with their own rules — check the Conservancy website for your starting point.

Can I camp anywhere on the trail?

No. You must use designated shelters or campsites. Camping outside these areas is not permitted on the Appalachian Trail, even on public land, except in some national forests where dispersed camping may be allowed. On private land, you need the landowner's permission. Violating this rule can result in fines and damage the trail's access agreements.

How much does it cost to hike the Appalachian Trail?

Hiking the trail itself is free — shelters and campsites do not charge. Costs come from gear, food, lodging in resupply towns, and transportation. A thru-hike typically costs $4,000 to $6,000 total, depending on how often you stay in hotels and how much you spend on food. Day hikes and section hikes cost only what you spend on gear and transportation.

What should I do if I get lost on the trail?

Stop and do not panic. Look for white blazes on trees and rocks — if you have not seen one in a while, backtrack until you find the trail again. Use your map and compass or GPS device to orient yourself. If you are truly lost and cannot find the trail, stay put, use your headlamp or whistle to signal, and call 911 if you have cell service. This is why telling someone your planned route and expected return time is important.

Can I bring my dog on the Appalachian Trail?

Dogs are permitted on most of the trail, but rules vary by section. Some state parks and national forests do not allow dogs, and a few sections prohibit them to protect wildlife. Check the Appalachian Trail Conservancy website or your guidebook for your specific section. Dogs must stay on the trail and under control at all times.