Dog-friendly trails and public land rules

Where dogs are allowed on US public land, what the leash rules actually say, and what each kind of terrain asks of a dog: water, heat and what the ground does to paws.

Rules quoted from the federal code
Four land agencies covered
Water, heat and paw surface for each

Who manages the land decides the rules

The same dog is welcome on one trail and banned from the next one over. It depends entirely on the agency:

USFS

US National Forests

The most welcoming public land for a dog. Dogs are allowed on almost all backcountry trails unless a sign says otherwise, usually to protect a watershed.

Leash rule: a 6-foot leash in developed areas such as campgrounds and trailheads. In open backcountry, reliable voice control or a leash.
NPS

US National Parks

Tightly restricted under 36 CFR 2.15 to protect wildlife. Dogs are banned from nearly every unpaved backcountry trail.

Leash rule: a physical leash of 6 feet or less, and only on paved roads, campgrounds and the designated B.A.R.K. Ranger paths.
BLM

Bureau of Land Management

Over 245 million acres across the American West, and the most freedom you will find for backcountry walking with a dog.

Leash rule: off-leash is allowed under reliable recall across most open acreage. Check the seasonal nesting closures.
State and Wilderness

State Parks and Wilderness

Designated Wilderness under the 1964 Wilderness Act, and state conservation parks, protecting fragile alpine ground and native plants.

Leash rule: a 6-foot leash year round is the normal rule, to protect high wetlands and wildlife.

What matters on a trail, for a dog

Four things decide whether a route suits a dog, and none of them is the distance.

Ground heat and shade

Sun on exposed granite or dark rock can burn a paw pad in under a minute once the ground is above 125F (52C). Air temperature will not tell you this. Put the back of your hand on the rock.

Water you can rely on

There is a large difference between a fast perennial stream, a wash that is dry by July, and a still pond carrying blue-green algae, which can kill a dog that drinks it.

Scrambles and drops

Vertical rock steps, class 2 and 3 scrambles, and narrow exposure. A dog cannot place four paws the way you place two hands and two feet, and will need a harness with a handle.

Room to pass

Sightlines, blind switchbacks, and whether there is anywhere to step aside for a horse, a loose dog, or someone who would rather not meet yours.

Regions, and what they ask of a dog

Compiled from agency information and published sources, not from personal visits. Rules and conditions change, so confirm with the managing agency before you travel.

Alpine Lakes Wilderness

Washington, USA

Granite ridges, tarns fed by snowmelt, and subalpine forest. Good from early summer into autumn, with water almost everywhere.

Agency:USFS / Wilderness
Water:Reliable (streams and tarns)
Paw hazard:Moderate (granite talus)
Leash:6-foot leash required

Trail tip: snow bridges last into July. Keep a dog leashed near undercut snowmelt creeks, which run faster than they look.

Green Mountain Forest

Vermont, USA

Shaded hardwood, soft loam underfoot, and mossy river valleys. One of the better places to walk a dog in high summer.

Agency:USFS
Water:Reliable (year-round brooks)
Paw hazard:Low (loam and roots)
Leash:Voice control, leash in camp

Trail tip: heavy tick season in spring and summer. Use a preventative and carry a tick hook.

Red Rock and desert BLM

Nevada / Utah, USA

Red sandstone canyons, dry washes and long views. An autumn to early spring place only, not a summer one.

Agency:BLM / NCA
Water:None. Carry all of it
Paw hazard:High (heat and sandstone)
Leash:6-foot leash in developed areas

Trail tip: sandstone works like sandpaper on a hot paw. Carry about 1 litre per hour for the dog, and bring boots.

San Juan Mountains

Colorado, USA

Rugged peaks, wildflower basins and high passes. For a dog that is already fit, not one starting out.

Agency:USFS / BLM
Water:Moderate (alpine creeks)
Paw hazard:High (sharp scree)
Leash:Voice control or 6ft leash

Trail tip: thunderstorms arrive almost daily in July and August. Be below treeline by midday.

Pacific Northwest coast

Oregon, USA

Coastal rainforest, headland views and open beach. Mild all year.

Agency:State Parks / USFS
Water:Moderate (carry fresh water)
Paw hazard:Moderate (barnacles, driftwood)
Leash:6-foot leash on headlands

Trail tip: never let a dog drink seawater. Carry fresh water specifically for the dog.

White Mountain Forest

New Hampshire, USA

Old granite, steep technical climbing and cool spruce-fir forest. Physically demanding ground.

Agency:USFS
Water:Reliable (streams and springs)
Paw hazard:High (abrasive granite)
Leash:Leash advised on scrambles

Trail tip: boulder scrambles can trap a paw. A harness with a solid top handle is worth having before you need it.

Common questions

Why are dogs banned from most US National Park trails?
National Parks are required by federal conservation law to protect native wildlife. A dog leaves scent that disturbs both predators and prey, can pass disease to wild canids, and can provoke an encounter that ends badly for everyone, including the dog.
What does the 6-foot leash rule actually mean?
A physical leash no longer than 6 feet (1.8 m), held by a person. This is written into 36 CFR 2.15 for the Park Service and applies in USFS developed areas too. A retractable lead extended past 6 feet does not comply in a leash zone, even if it is locked.
What do I do with dog waste in the backcountry?
Under Leave No Trace, either pack it out in a sealed bag, or bury it in a hole 6 to 8 inches deep at least 200 feet (about 70 adult steps) from any water, trail or campsite. A bag left beside the trail to collect later is the worst option.
An off-leash dog is coming at us on a narrow trail. What now?
Step off on the downhill side, put your dog behind you in a sit, and shout a firm STOP at the incoming dog while calling the owner. Never put bare hands between two dogs that are fighting. Use a pole or a water bottle as a barrier instead.