Last updated September 22, 2026
Appalachian Trail: Complete AT Thru-Hike Guide
The Appalachian Trail runs 2,197.9 miles from Springer Mountain in Georgia to Katahdin in Maine, crossing 14 states and accumulating roughly 464,500 feet of elevation gain and loss. This guide brings the route, timing, shelters, permits, resupply, cost, food storage, Great Smoky Mountains, White Mountains, 100 Mile Wilderness and Katahdin finish into one thru-hike planning system.
How Long Is the Appalachian Trail—and How Long Does It Take?
The Appalachian Trail Conservancy lists the 2026 Appalachian Trail at 2,197.9 miles from Springer Mountain, Georgia, to Katahdin in Maine. The AT crosses 14 states, and a complete thru-hike generally takes about six months. Most northbound hikers begin between late February and early April and need to reach Katahdin before the northern season closes. Unlike the Pacific Crest Trail, the AT has frequent road crossings, towns and more than 250 backcountry shelters—but the trail’s steep, rocky tread and roughly 464,500 feet of cumulative elevation gain and loss make mileage alone a poor measure of difficulty.
The AT remains affected by changing closures and detours, including lingering Hurricane Helene damage in portions of the southern Appalachians. The Harpers Ferry footbridge was also under a temporary construction closure in late summer 2026. Always check the current ATC Trail Updates page immediately before entering a section rather than treating an old GPX track as authoritative.
The Appalachian Trail Across 14 States.
The AT never reaches western elevations, but it repeatedly climbs and descends the Appalachian spine. The character changes from the southern mountains and Great Smokies through Virginia, the Mid-Atlantic, New England and finally remote Maine.
What Is the Appalachian Trail Actually Like?
The AT’s difficulty comes less from one extreme landscape than from thousands of repeated climbs and descents. Terrain, weather, resupply and trail culture all change as the hike moves north.
The Learning Curve
Springer Mountain begins the official AT. New thru-hikers immediately learn that Appalachian climbing is rarely flat and that an overloaded pack becomes expensive very quickly.
Southern High Country
The Nantahala, Roan Highlands and Great Smoky Mountains introduce higher elevations, colder weather and some of the most memorable southern terrain.
The Long Middle
Virginia contains more AT mileage than any other state. McAfee Knob and Shenandoah provide highlights, but the larger challenge is sustained progress week after week.
Mid-Atlantic
Harpers Ferry marks the psychological midpoint. Pennsylvania becomes famous for rocks; New Jersey and New York mix ridge walking with dense civilization nearby.
New England Begins
The terrain gradually becomes steeper and rougher while resupply remains manageable.
The White Mountains
Long climbs, exposed alpine terrain, huts, rough descents and fast weather changes make the Whites one of the AT’s most consequential sections.
Remote and Rugged
Roots, mud, river crossings and remote terrain culminate in the 100 Mile Wilderness.
Katahdin
The final summit is not ceremonial walking. ATC describes Katahdin as widely considered the hardest ascent on the entire AT.
The AT Is a Forest Trail—but That Does Not Make It Easy.
Georgia, North Carolina and Tennessee repeatedly climb Appalachian ridges before dropping back into gaps and valleys. Cold rain, mud, roots, short daylight and elevation change can make a modest mileage day much harder than its distance suggests.
Photo: Miguel Vieira · Wikimedia Commons · CC BY-SA 3.0Northbound, Southbound or Flip-Flop?
Direction determines weather, crowds, terrain progression and how much time you have to reach the seasonal bottleneck at Katahdin.
The Traditional Thru-Hike
Most northbound hikers begin from late February through early April. It offers the largest hiker community but also creates a concentrated spring bubble through Georgia and the southern Appalachians.
Hardest Start
Southbound hikers begin with Katahdin, Maine and the 100 Mile Wilderness. ATC specifically describes this direction as better suited to fit, experienced hikers because the ruggedest, most remote terrain arrives immediately.
Use the Calendar Better
Starting around Harpers Ferry or another midpoint can reduce crowding, offer milder weather and lengthen the practical completion window. Harpers Ferry is ATC’s most common flip-flop start.
A northbound start date is really a Katahdin deadline calculation.
Starting too early increases exposure to winter conditions and crowding in the south. Starting too late compresses the calendar and increases the risk of reaching Maine after autumn weather begins limiting Katahdin access.
How Hard Is an Appalachian Trail Thru-Hike?
The AT never reaches the altitude of the PCT, yet its accumulated vertical relief and rough tread make it physically punishing. The difficulty is repetition.
The ATC’s current cumulative climbing and descending figure.
Kuwohi in Great Smoky Mountains National Park.
A long enough period for overuse injuries, weather and motivation to matter.
ATC’s reported rate among registered northbound starters.
There is no single hardest mile.
The Whites and Maine are more rugged than much of the southern trail, but a thru-hike is usually lost to the accumulation of injury, illness, budget pressure, weather, motivation or poor pacing rather than to one famous climb.
Virginia Is Long Enough to Become Its Own Thru-Hike.
McAfee Knob supplies one of the AT’s most recognizable views, but Virginia’s real contribution to a thru-hike is scale. The initial excitement has faded, Maine is still far away, and hikers have to turn short-term motivation into a sustainable routine.
Photo: Danfolkes · Wikimedia Commons · CC BY-SA 3.0Which Appalachian Trail Permits Do Thru-Hikers Need?
The AT does not use a single long-distance permit like the PCT. Instead, hikers cross a patchwork of jurisdictions. The most important permit systems must be handled separately.
AT Thru-Hiker Permit
Qualifying AT thru-hikers need the park’s AT thru-hiker permit for overnight travel through Great Smoky Mountains National Park.
- Current fee: $44.50.
- Issued through Recreation.gov.
- Available up to 30 days before entering the park.
- Entry is allowed within a ±15-day window around the estimated date.
- Carry the required permit copy.
Backcountry Permit
Overnight backcountry users in Shenandoah must obtain a permit through Recreation.gov.
- AT shelters and associated campsites are first-come, first-served.
- The permit does not reserve a particular shelter space.
- Reservations can generally be made up to 90 days ahead.
Long Distance Hiker Permit
All overnight AT hikers entering Baxter and planning to summit Katahdin need the park’s Long Distance Hiker Permit.
- The permit is free.
- It must be obtained in person.
- Pick it up at Katahdin Stream Campground before the summit.
- NOBO, SOBO, section and flip-flop hikers are included.
More Than 250 Shelters—But Carry a Tent Anyway.
The Appalachian Trail has more than 250 backcountry shelters. Most are simple three-sided structures with a roof and wooden sleeping platform.
They are useful for:
- Concentrating camping impact.
- Creating predictable daily destinations.
- Providing social gathering points.
- Offering some protection from rain.
They are not guaranteed accommodation. Except for special systems such as Great Smoky Mountains National Park, most shelters are first-come, first-served and can fill rapidly—especially in bad weather.
Every thru-hiker still needs an independent sleeping shelter.
AT shelters are simple backcountry structures—not guaranteed hut reservations.How Often Do Appalachian Trail Hikers Resupply?
The ATC says most hikers normally carry about three to six days of food at a time. That makes the Appalachian Trail far easier to resupply than many remote long-distance trails.
Buy as You Go
Road crossings and Trail towns are frequent enough that most thru-hikers can purchase much of their food while moving north or south.
Do Not Box Everything
ATC notes that places such as Fontana Dam, Harpers Ferry and Monson are among the locations where mailed resupply can be useful.
100 Mile Wilderness
This is the exception to casual resupply. ATC advises planning roughly seven to ten days of food for the remote stretch north of Monson.
The AT rewards flexibility.
Your appetite will change. Your pace will change. Foods that sounded perfect at home may become intolerable after week eight. Use mailed boxes where they solve a specific problem rather than turning the entire hike into a rigid postal schedule.
How Much Does an Appalachian Trail Thru-Hike Cost?
There is no official AT thru-hike budget. Recent hiker surveys are best treated as planning benchmarks rather than required spending levels.
Average reported long-distance hiking cost in The Trek’s 2025 survey.
Reported equipment spending included in the survey average.
About five months among surveyed thru-hikers.
Recent spending varies substantially with town time, hotels, food and gear choices.
The Trek’s survey is independent hiker-reported data, not an ATC or National Park Service cost estimate. It also does not capture personal expenses that continue at home or income forgone while taking several months away from work.
Bear Canister or Bear Hang on the Appalachian Trail?
ATC strongly recommends that overnight hikers use a hard-sided bear canister because food-conditioned bears increasingly defeat traditional hangs and some alternative storage systems.
Hard-Sided Canister
ATC describes a hard-sided bear canister as the most reliable food-storage option across the trail.
Check Each Section
Some specific trail areas impose food-storage requirements. Regulations can change with bear activity or land-management orders.
Use Provided Cables
Great Smoky Mountains National Park requires hikers at overnight sites to use the provided bear-cable system, even when carrying a canister.
Food storage is wildlife management, not merely gear preference.
A bear that repeatedly obtains human food can become a danger to hikers and may ultimately be killed. Proper storage protects both the hiker and the animal.
Katahdin Is the Finish Line—but It Is Still a Mountain.
After more than 2,000 miles, it is easy to think of Baxter Peak as a ceremony. Baxter State Park does not treat it that way. Weather, exposed terrain, park rules and summit access still control the final day.
Photo: TJ aka Teej · public domainThe Katahdin Finish Requires Its Own Plan.
All AT overnight hikers need the free Long Distance Hiker Permit before summiting Katahdin.
ATC also recommends that AT hikers leave their full overnight backpack behind and use a day pack for the summit climb. Baxter provides loaner day packs at Katahdin Stream Campground.
- Pick up the Long Distance Hiker Permit in person.
- Carry appropriate summit clothing and emergency equipment.
- Follow Baxter State Park weather and trail closures.
- Do not assume Katahdin access simply because your thru-hike schedule says you should finish that day.
- NOBO hikers should plan to arrive before the normal mid-October seasonal limit.
For northbound hikers eligible for the Birches long-distance hiker campground, specific Baxter entry rules apply after completing the 100 Mile Wilderness.
Baxter Peak · Mount Katahdin · northern terminus of the Appalachian Trail.Section Hiking the Appalachian Trail.
The Appalachian Trail is unusually well suited to section hiking because hundreds of road crossings and access points let hikers complete the trail over multiple trips and years.
Virginia
Sections around Shenandoah or southwest Virginia combine iconic scenery with relatively frequent access and resupply.
White Mountains
New Hampshire delivers some of the AT’s most dramatic terrain, but mileage should be reduced substantially for rough tread and large climbs.
100 Mile Wilderness
Maine’s famous wilderness section is better treated as its own backcountry expedition than as an ordinary week of AT hiking.
A Practical Appalachian Trail Planning Sequence.
Do not begin by buying ultralight gear. The route direction, calendar, fitness and financial runway should exist first.
Choose Direction
NOBO, SOBO or flip-flop determines weather, crowding and which hard terrain arrives first.
Protect the Calendar
A full thru-hike usually requires roughly five to six months plus travel and contingency.
Register the Hike
ATC recommends registering long-distance hikes through ATCamp to help reduce crowding and receive safety information.
Resolve Permits
Smokies, Shenandoah and Baxter are separate systems rather than one AT-wide permit.
Build the Budget
Town stays, food, gear replacement, transportation and normal bills at home can matter as much as initial equipment.
Test the Gear
A multi-night shakedown reveals footwear, pack, shelter, sleep and food problems much more honestly than a spreadsheet.
Start Conservatively
Your trail legs do not exist at Springer. Let tendons, feet and recovery adapt before demanding sustained big-mile days.
Keep Replanning
Storms, closures, injury, fires and seasonal timing will change the original schedule. Adaptation is part of thru-hiking.
Put the Appalachian Trail Inside the Larger US Thru-Hiking System.
This page owns Appalachian Trail planning. The parent and sibling pages handle comparisons across America’s long trails.
Plan the Shared Long-Trail Problems Separately.
These supporting pages can own the planning questions shared between the Appalachian Trail and the other long-distance trails.
Continue Into Weather, Safety and Mountain Progression.
Exactly three related recovery pages keep this trail connected to the wider Global Summit Guide mountain-planning system.
Check Current Appalachian Trail Information Before Hiking.
The official mileage is updated annually, and storms, bridges, bear activity and park rules can change much faster. Check current sources before each section.
Appalachian Trail FAQ.
The essential questions to answer before turning an AT thru-hike into a six-month commitment.
How long is the Appalachian Trail?
The Appalachian Trail Conservancy lists the official 2026 Appalachian Trail at 2,197.9 miles. The mileage changes slightly from year to year as sections are relocated, repaired or measured more precisely.
Where does the Appalachian Trail start and end?
The southern terminus is Springer Mountain in Georgia. The northern terminus is Baxter Peak on Katahdin in Baxter State Park, Maine.
How long does it take to thru-hike the Appalachian Trail?
ATC says a typical thru-hike takes around six months. The 2025 survey from The Trek found an average of 153 days among respondents.
How many states does the Appalachian Trail cross?
The AT passes through 14 states: Georgia, North Carolina, Tennessee, Virginia, West Virginia, Maryland, Pennsylvania, New Jersey, New York, Connecticut, Massachusetts, Vermont, New Hampshire and Maine.
What is the highest point on the Appalachian Trail?
Kuwohi in Great Smoky Mountains National Park is the highest point on the AT at 6,643 feet.
How much elevation gain is on the Appalachian Trail?
ATC currently lists approximately 464,500 feet of cumulative elevation gain and loss across the full trail.
How many Appalachian Trail shelters are there?
There are more than 250 backcountry shelters along the AT. Most are first-come, first-served, so hikers should always carry their own shelter rather than relying on getting a space.
Do you need a permit to thru-hike the Appalachian Trail?
There is no single AT-wide thru-hiking permit. Specific jurisdictions have their own requirements. Important examples include Great Smoky Mountains National Park, Shenandoah National Park and Baxter State Park.
How much is the Great Smoky Mountains AT thru-hiker permit?
As of 2026, the qualifying Appalachian Trail thru-hiker permit costs $44.50 and is issued through Recreation.gov.
Do Appalachian Trail hikers need a permit for Katahdin?
All AT overnight hikers planning to summit Katahdin must obtain Baxter State Park’s free Long Distance Hiker Permit in person at Katahdin Stream Campground.
How much does an Appalachian Trail thru-hike cost?
There is no required budget. The Trek’s 2025 hiker survey reported an average long-distance hiking cost of $7,680, including an average of $2,113 in gear. Town stays and personal spending create large differences between hikers.
How often do Appalachian Trail hikers resupply?
ATC says most long-distance hikers carry approximately three to six days of food at a time. Northern Maine’s 100 Mile Wilderness is a major exception, where hikers may need seven to ten days of food.
Should AT hikers carry a bear canister?
ATC strongly recommends that overnight hikers carry a hard-sided bear canister because it is the most reliable food-storage method. Local regulations still apply, including required storage systems in specific parks and trail sections.
What percentage of Appalachian Trail thru-hikers finish?
ATC reported that 550 of 2,187 registered northbound starters reported completion in 2025, a 25% completion rate. Completion percentages vary by year, direction and how hikers are counted.
Is the Appalachian Trail harder than the Pacific Crest Trail?
They concentrate difficulty differently. The AT has more repetitive steep climbing, rough roots and rocks, humidity, rain and sustained elevation change. The PCT has higher elevations, desert water carries, substantial snow travel and a tighter seasonal window. Neither mileage alone nor maximum elevation determines which will feel harder to an individual hiker.
Do Not Train Only to Reach Springer. Prepare to Still Be Hiking in Maine.
The Appalachian Trail does not require one extraordinary summit day. It requires thousands of ordinary decisions made well for months: pace conservatively, keep feet healthy, eat enough, protect food from bears, adapt equipment, manage town spending, respect weather and continue through the point where the adventure has become normal life.
Was this helpful?
Global Summit Guide is an independent mountaineering resource founded in 2026. The team combines first-hand trekking and climbing experience with in-depth research and professional health and nutrition review to help climbers choose objectives, prepare properly, and stay safe.
Health, altitude, and nutrition content is reviewed by Taylor Ludlow (Registered Nurse) and Brigg Hoopes (Nutritionist).
What We Don't Know Yet
Mountain information changes quickly. This box explains the limits of what this page can responsibly promise.
- Permit availability, reservation windows, quotas, and official fee rules may change after this page is updated.
- Visa, passport, vaccination, border, insurance, and local transportation rules may change before your trip.
- Route conditions, snowpack, closures, and weather can change quickly after this page is updated.
- Permit rules, fees, quotas, and reservation windows may change between review cycles.
- Operator availability, pricing, guide ratios, and cancellation terms can change by season.
Verify current conditions with official land managers, guide services, local forecasts, and current route reports before booking or climbing.
Mountaineering, rock and ice climbing, glacier travel, and high-altitude activity are inherently dangerous and can result in serious injury or death. The information on Global Summit Guide is provided for general informational and educational purposes only and is not a substitute for professional instruction, qualified guiding, proper equipment, or your own judgment and experience.
Route conditions, weather, snowpack, permits, regulations, and hazards change constantly and may differ from what is described here. Details may be incomplete, out of date, or contain errors. Always verify current information with local authorities, certified guides, and official sources before making any decision in the mountains.
Nothing on this site is medical, legal, or financial advice. Our fitness, acclimatization, altitude, and nutrition content is general in nature; consult a qualified physician before beginning any strenuous exercise program or exposing yourself to high altitude.
You are solely responsible for your own safety and decisions. To the fullest extent permitted by law, Global Summit Guide and its team accept no liability for any loss, injury, damage, or expense arising from use of, or reliance on, this information. By using this site you acknowledge these risks and accept these terms.
Some links on this site may be affiliate links. If you buy through them we may earn a small commission at no extra cost to you; this never affects our recommendations.
Global Summit Guide recommendation path
Next Best Mountain to Research
Use these recommendations to continue the right planning path instead of stopping on one page.
Use current permit, weather, route, and operator information before booking or climbing.