The Trail Navigates Itself, Until It Does Not
The Appalachian Trail is marked with a white blaze roughly every few hundred yards for its entire length, about 2,190 miles from Springer Mountain in Georgia to Katahdin in Maine. Two blazes stacked means a turn. Blue blazes mean a side trail.
Which is why most hikers carry no map at all, and why the ones who get in trouble are almost never lost on the trail. They are lost off it: bailing to a road in a storm, taking a blue-blazed side trail to a shelter in the dark, or walking a road walk around a closure.
What People Actually Carry
FarOut
Formerly Guthook, and the de facto standard on every long trail in the country. You buy the Appalachian Trail guide inside the app and get a linear map with waypoints for shelters, water sources, privies, road crossings, hostels and resupply, each with an elevation profile and a comment thread.
The comments are the actual product. When a spring goes dry in August, somebody two hours ahead of you says so, and that is information no printed map can carry.
It works offline once downloaded. It is bought per trail, not by subscription.
AWOL's A.T. Guide
David Miller's guide, in paper or PDF, and the other thing half the trail carries. It is a data book: every feature with its mileage, elevation, and services in town, laid out so you can plan a week at a shelter table without a phone.
Paper version, torn into sections and mailed ahead, is a very common setup.
The ATC map sets
The Appalachian Trail Conservancy publishes proper topographic maps in sets by region, usually paired with a guidebook. These are the real maps: contours, side trails, roads, and the terrain either side of the corridor.
Thru-hikers usually skip them for weight. Section hikers and weekenders should not, because a section hiker is far more likely to be using side trails and shuttles.
Gaia GPS or CalTopo
For everything the linear guides ignore. Bail-out routes, alternate loops, the forest road your shuttle driver is meeting you on. Download the region offline and the coverage is far wider than FarOut's corridor.
What to Carry for Which Trip
- Thru-hike: FarOut, plus AWOL in paper or PDF. A battery bank sized for four to five days between towns.
- Section hike of a week or two: FarOut, plus the ATC map for that region on paper. You will use side trails and roads more than a thru-hiker does.
- A weekend: The ATC map for the section, or the relevant state park or national forest map. FarOut is optional at this length.
- Day hiking to a viewpoint: The trailhead kiosk photo on your phone is genuinely enough on a blazed trail.
State by State, the Numbers People Look For
These shift slightly as sections are relocated, so treat them as close rather than exact.
- Vermont: about 150 miles, with the first 100 or so shared with the Long Trail from the Massachusetts border before the two split.
- Maryland: about 41 miles along South Mountain, from Pen Mar Park to Harpers Ferry. The flattest state on the trail.
- New York: close to 90 miles, including the Hudson crossing at Bear Mountain and the trailside zoo, which sits at the lowest elevation on the whole trail.
- Georgia: about 78 miles from Springer Mountain to Bly Gap at the North Carolina line.
- Virginia: roughly a quarter of the entire trail, more than 500 miles.
The Interactive Map
The Appalachian Trail Conservancy runs an interactive map on its own site covering the full corridor with shelters, parking and side trails. It is the right tool at the planning stage, when you are deciding which 60 miles to walk in October, and the wrong one on the trail because it needs signal.
Two Things That Catch People
Battery, not navigation. On a cold night a phone loses charge fast, and the app is only as good as the battery. Hikers who carry paper are usually solving a battery problem, not a map problem.
Closures and relocations. Sections get rerouted, shelters close, and fire closures happen. The Conservancy publishes trail updates and they are worth reading the week you leave, because no downloaded map knows about a closure announced yesterday.
Appalachian Trail Maps and Apps: What Hikers Actually Carry FAQs
FarOut, previously called Guthook, is the standard. It carries the trail with waypoints for shelters, water sources, road crossings and resupply, and comments from hikers ahead of you on the same day, which is how people find out a spring has dried up.
For the trail itself, rarely. It is blazed with white paint every few hundred yards and it is hard to lose. You need a map the moment you leave it, for a bail-out to a road, a side trail, or a storm that puts you off route.
About 150 miles. The first roughly 100 miles from the Massachusetts border run concurrently with Vermont's Long Trail before the two split near Sherburne Pass and the Appalachian Trail turns east toward New Hampshire.
About 41 miles along the ridge of South Mountain, from Pen Mar Park at the Pennsylvania line down to Harpers Ferry. It is flat by Appalachian Trail standards, which is why the Four State Challenge runs through it.
Close to 90 miles from the Connecticut border to the New Jersey line, including the stretch that crosses the Hudson at Bear Mountain and passes the trailside zoo, which is the lowest point on the entire trail.
About 2,190 miles, and the exact figure changes most years as sections are relocated. The Appalachian Trail Conservancy publishes the current number, so any fixed figure you see is a snapshot.
