Thru-hiking the Appalachian Trail (A.T.) is the adventure of a lifetime. One of the most common questions hikers ask is how long it takes and how to plan a successful thru-hiking journey.
It’s a mammoth undertaking that tests both endurance and mindset, and an experience many hikers describe as one of the greatest accomplishments of their lives.
What Is Thru-Hiking?
A thru-hike is a hike of the entire Appalachian Trail completed within 12 months or less, covering more than 2,190 miles of trail. Thru-hikers may travel northbound, southbound, or use a flip-flop itinerary. The Appalachian Trail Conservancy (ATC) recognizes thru-hikes regardless of sequence or whether hikers carry a pack the entire way.
All thru-hikers who complete the entire A.T. are eligible for the ATC’s 2,000-miler program.
What to Expect
Thru-hiking the Appalachian Trail is a demanding physical and mental challenge. The Trail is mountainous for its entire length, with rocky terrain and frequent elevation changes. While physical fitness helps, especially early on, most hikers find that completing their thru-hike depends more on mental resilience than physical strength.
Many thru-hikers get their “trail legs” within a month or two and settle into a daily rhythm of living outdoors, connecting with other hikers, and becoming part of the Trail’s community.
Most thru-hikers complete the A.T. in five to seven months, with the average thru-hike taking just under six months. Individual timing depends on pace, weather, and route choice. Northbound hikers must reach Katahdin before mid-October when the Trail to the summit closes, while flip-flop hikes typically offer the widest weather window.
About one in three hikers who attempt a thru-hike of the A.T. complete the entire Trail. Since the Trail’s founding, more than 20,000 completed thru-hikes have been reported to the Appalachian Trail Conservancy.
Preparing for a thru-hike requires both logistical planning and personal readiness, including:
- Choosing an itinerary, start date, and location
- Registering a thru-hike
- Understanding camping regulations
- Planning resupply points
Check out the A.T.-specific resources and guides on this page to begin planning your journey.
How to Thru-Hike the Appalachian Trail
Northbound (NOBO)
The most popular way to hike the A.T., but also the most crowded from mid February to mid April. Expect cold early on and heat in the summer. Hikers should plan to arrive at Katahdin before October 15.
Northbound
Southbound (SOBO)
Starting at Katahdin means beginning with one of the toughest sections of the Trail. The remote, rugged terrain in Maine is challenging, with fewer resupply points early on, so this route is best for experienced and fit hikers.
Southbound
Flip-Flop
Flip-flop hikes begin somewhere in the middle of the Appalachian Trail and change direction partway through their journey. This approach offers more flexibility, fewer crowds, milder weather, and easier terrain early on, while also helping reduce overcrowding on the Trail.
Flip Flop
Section Hiking
Section hikers complete the Trail over multiple trips, with many taking years to complete the entire Trail. This method allows greater flexibility and fewer sacrifices than a thru-hike. All section hikers who complete the A.T. are eligible for ATC’s 2,000-miler program, no matter how long it takes!
Prepare for Your Thru-Hike
What to Carry
The most predictable mistake hikers make when they start is carrying too much stuff. Learn about the 10 Essentials and how to trim pack weight while carrying what you need.
What to Carry
Maps & Guides
Thru-hiking guides and planners, official A.T. maps, and more are available in our Trail Store.
ATC Trail Store
Safety on the Trail
Learn about the hazards you may face when hiking the Appalachian Trail and how to best prepare for a safe, healthy hike.
Safety
Trail Updates
Know before you go — be aware of the latest Appalachian Trail conditions, weather advisories, and reroutes/closures.
Trail Updates
Hurricane Helene
Storm Damage Info for 2026 A.T. Hikers
Hurricane Helene hit the southern Appalachians in late September 2024 and caused widespread, catastrophic destruction. Closures and detours due to the storm are still in effect, and Appalachian Trail (A.T.) hikers must take special precautions to stay safe help the land heal.
Responsible Recreation
Camping & Shelters
Whether you’re pitching a tent or staying at one of the 250+ backcountry shelters along the Trail, it’s important to follow regulations and minimize your impact on the environment.
Camping & Shelters
Permits & Fees
Some parts of the Trail require an entrance fee and permit, and some places require fees for camping.
Permits & FeesThe A.T. Ethic: Hiking Sustainably
Report an Incident
While the Appalachian Trail is a relatively safe place to visit, that does not mean that there are not potential dangers while you are hiking or camping. If you see something, say something — this will help us keep the A.T. as safe as possible for our visitors.
Report an IncidentRegistering & Finishing Your Hike
ATCamp Registration
Thru-hikers can voluntarily register their hikes at ATCamp to connect with fellow hikers, share their planned start date, and help protect the Trail from overcrowding.
A.T. Hangtags
Hangtags distributed by the Appalachian Trail Conservancy are frequently seen dangling off an aspiring 2,000-miler’s pack, marking their intent to traverse the entire Appalachian Trail.
About A.T. Hangtags
Finish Well at Baxter State Park
Celebrate the history and significance of Katahdin and your thru-hike by following these guidelines while hiking to the northern terminus of the Appalachian Trail. If you are supporting an A.T. hiker, learn how to do so before, during, and after their journey with tips on safety, communication, resupply logistics, and more.
Report a Successful Hike of the Entire Appalachian Trail
Section hikers and thru-hikers who complete the entire A.T. can report their journeys to us by filling out the 2,000-miler application. Those who submit their applications will be added to our roster of 2,000-milers and will receive a certificate of recognition, an A.T. patch, an accompanying 2,000-miler “rocker” patch, and be featured in the Spring issue of A.T. Journeys magazine.
About 2,000 Miler Applications
