Iconic Long-Distance Hiking Trails in the US
The United States is home to some of the longest and most demanding footpaths on earth — trails that cross entire mountain ranges, stitch together ecosystems, and take months to complete. This page covers the defining characteristics of America's iconic long-distance trails, how they function as managed systems, the range of experiences hikers encounter on them, and how to think about choosing between them.
Definition and scope
A long-distance hiking trail in the US context generally refers to a route of at least 100 miles that is designated, maintained, and accessible as a continuous corridor. The most recognized of these fall under the National Trails System, established by the National Trails System Act of 1968, which created two primary categories: National Scenic Trails and National Historic Trails. There are 11 designated National Scenic Trails, covering a combined total of roughly 19,000 miles of trail across the country (National Park Service, National Trails System).
The three trails that define the genre — and that most hikers mean when they talk about iconic long-distance routes — are the Appalachian Trail, the Pacific Crest Trail, and the Continental Divide Trail. Together, these three form the informal "Triple Crown" of American hiking. The Appalachian Trail runs approximately 2,198 miles from Springer Mountain in Georgia to Mount Katahdin in Maine. The Pacific Crest Trail stretches 2,650 miles from the California-Mexico border to the Washington-Canada border. The Continental Divide Trail, the longest and least developed of the three, covers roughly 3,100 miles along the spine of the Rocky Mountains.
Beyond the Triple Crown, routes like the Colorado Trail (486 miles), the John Muir Trail (211 miles in the Sierra Nevada), and the Arizona Trail (800 miles) have developed strong followings and significant infrastructure of their own. Exploring the broader landscape of long-distance hiking trails reveals just how much variety exists beneath the famous names.
How it works
Long-distance trails don't maintain themselves. Each of the major routes has a nonprofit managing organization that coordinates with federal land agencies — primarily the National Park Service, the US Forest Service, and the Bureau of Land Management — to handle trail marking, maintenance, permitting, and education. The Appalachian Trail Conservancy, the Pacific Crest Trail Association, and the Continental Divide Trail Coalition each fill this role for their respective trails.
Permit systems vary significantly. The Pacific Crest Trail requires a free permit from the US Forest Service for any thru-hike or section hike exceeding 500 miles in a single season. The Appalachian Trail has no comprehensive permit requirement for most of its length, though several jurisdictions along the route — including Baxter State Park at the northern terminus — enforce their own entry systems. The Continental Divide Trail has the least formal permit infrastructure of the three, which is part of what makes it genuinely challenging to navigate. A more complete breakdown of hiking permits and regulations covers these systems in practical detail.
Trail conditions shift dramatically by season. Snow closes high passes on the PCT and CDT well into June in heavy snow years. The AT's southern sections are accessible year-round, but the White Mountains of New Hampshire present genuine alpine exposure above treeline. Checking trail conditions and closures before any section hike is not a formality — it's basic trip planning.
Common scenarios
Most people who engage with long-distance trails do so through one of four distinct modes:
- Thru-hiking — completing the entire trail in a single continuous journey, typically taking 4 to 6 months for the AT, 4 to 5 months for the PCT, and 4 to 6 months for the CDT.
- Section hiking — completing a trail in segments over multiple trips, sometimes spanning years or decades. The majority of people who eventually finish the Appalachian Trail do so this way.
- Point-to-point day or overnight trips — using a shuttle or second vehicle to hike a specific corridor without retracing steps.
- Out-and-back access — treating a trailhead on a long-distance route as the starting point for a day hike or short backpacking trip.
Gear requirements shift meaningfully across these modes. A thru-hiker optimizing for a sub-20-pound base weight is solving a fundamentally different problem than a day hiker pulling a section of the John Muir Trail for a weekend. The hiking gear essentials and backpacking vs hiking pages address how those distinctions play out in practice.
Decision boundaries
Choosing between these trails is not simply a matter of scenery preference — the trails differ structurally in ways that matter before the first step.
The Appalachian Trail is the most socially dense. Hiker hostels, trail towns, and a well-developed resupply infrastructure make it comparatively forgiving for first-time long-distance hikers. The route is well-blazed with white paint marks and rarely ambiguous.
The Pacific Crest Trail offers more solitude than the AT while still having strong infrastructure. Its defining challenge is water scarcity in the Southern California desert (some stretches require carrying water for 20-plus miles) and snow navigation in the Sierra Nevada.
The Continental Divide Trail is a different proposition entirely. Roughly 30 percent of the official route uses dirt roads rather than dedicated singletrack (Continental Divide Trail Coalition), and navigation demands genuine skill — the kind covered in wilderness navigation skills. It rewards experienced hikers who have already spent time on the other two.
The best hiking trails in the US and the broader hiking authority home both provide additional context for how these routes fit into the full spectrum of American trail experiences, from a single afternoon to a six-month expedition.