What Is Leave No Trace?
Leave No Trace (LNT) is a widely recognized outdoor ethics framework built around seven core principles. Developed with support from federal land management agencies including the U.S. Forest Service, National Park Service, and Bureau of Land Management, the framework is administered by the Leave No Trace Center for Outdoor Ethics, a nonprofit organization. Its purpose is straightforward: give outdoor recreationists — hikers, campers, climbers, paddlers — a consistent, science-informed set of guidelines for reducing their impact on natural environments.
The principles aren't rules enforced by rangers. They're a shared code that reflects how cumulative human behavior shapes ecosystems. A single footstep off-trail rarely causes lasting damage, but multiply that by thousands of visitors and erosion, soil compaction, and vegetation loss follow. LNT addresses that math.
Whether you're new to outdoor activities or a seasoned backcountry traveler, understanding these seven principles helps you participate in recreation without degrading the places you visit.
| Framework administrator | Leave No Trace Center for Outdoor Ethics (nonprofit) |
| Number of core principles | Seven |
| Applies to | Hiking, camping, climbing, paddling, cycling, wildlife viewing, and more |
| Minimum distance from water for waste | 200 feet (about 70 adult paces) (Leave No Trace Center for Outdoor Ethics guidelines) |
| Cathole depth | 6–8 inches (Leave No Trace Center for Outdoor Ethics guidelines) |
| Agency partnerships | U.S. Forest Service, National Park Service, Bureau of Land Management |
The Seven Principles Explained
1. Plan Ahead and Prepare
Good planning reduces both safety risks and environmental impact. Researching regulations, weather conditions, and trail capacity before you go means fewer surprises that lead to poor decisions — like cutting switchbacks or camping in sensitive areas. A solid pre-trip checklist covers the essentials.
2. Travel and Camp on Durable Surfaces
Stick to established trails and designated campsites wherever they exist. On rock, gravel, dry grass, or snow, spread out to avoid creating new paths. In high-traffic areas, concentrate use on existing worn surfaces to prevent further spread of damage.
3. Dispose of Waste Properly
Pack out all trash, leftover food, and litter — including items others left behind. Human waste should be buried in a cathole six to eight inches deep, at least 200 feet from water, trails, and camp. Wastewater from cooking or washing should also be scattered far from water sources.
4. Leave What You Find
Resist the urge to take rocks, plants, feathers, or artifacts as souvenirs. Examine and enjoy natural and cultural objects without disturbing them. Avoid introducing or transporting non-native species, including seeds clinging to boots or gear.
5. Minimize Campfire Impacts
Campfires can cause lasting damage in many ecosystems. Use a lightweight stove for cooking when possible. Where fires are permitted and conditions are appropriate, use established fire rings, keep fires small, burn only small sticks found on the ground, and extinguish fires completely — cold to the touch.
6. Respect Wildlife
Observe animals from a distance; never feed them. Feeding wildlife alters their natural behavior and can harm their health. Secure food and scented items properly. Understanding how trail wildlife encounters unfold helps you respond calmly rather than reactively.
7. Be Considerate of Other Visitors
Yield to other trail users according to local norms (typically uphill hikers and equestrians have right of way). Keep noise levels low. Camp away from other groups. The goal is ensuring that others — including those who arrive after you — can have a quality experience too.
Leave No Trace (LNT)
A set of seven outdoor ethics principles designed to minimize human impact on natural environments. The framework is managed by the Leave No Trace Center for Outdoor Ethics.
Cathole
A small hole dug six to eight inches deep for burying human waste in the backcountry. It should be located at least 200 feet from water, trails, and campsites to prevent contamination.
Durable surface
A surface that can withstand foot traffic with minimal lasting damage — such as rock, gravel, compacted dirt trails, dry grass, or snow. LNT recommends staying on these to protect fragile vegetation.
Switchback
A zigzagging trail design used on steep slopes to reduce erosion and make ascent easier. Cutting across switchbacks damages vegetation and accelerates soil erosion.
Wilderness ethics
A broader concept encompassing responsible attitudes and behaviors toward natural spaces, of which Leave No Trace is one widely adopted practical expression.
Why These Principles Matter in Practice
Natural areas absorb millions of visits each year. Parks and wilderness zones that were once remote are now accessible to far more people, and the environmental stress is measurable — soil erosion along popular corridors, wildlife behavioral changes near trailheads, and water quality issues near heavily used campsites. The seven LNT principles exist precisely because well-intentioned visitors can still cause harm without guidance.
LNT also applies beyond wilderness backpacking. Day hikers, picnickers, mountain bikers, and wildlife photographers all benefit from following the framework. If you're heading out with a camera, practices like responsible wildlife photography align closely with LNT's wildlife and durable-surface principles.
The framework is also scalable. A family outing to a local nature trail and a two-week backcountry expedition both call for the same foundational thinking — just applied at different intensities. Starting with a reliable day hike gear checklist is one practical way to build LNT habits from the very first trip.
