Dogs on Hiking Trails in Maryland: Leash Laws, Banned Trails, and Top Pet-Friendly Hikes

Maryland packs Atlantic beaches, Appalachian ridgelines, and Chesapeake Bay wetlands into one small state, and almost none of that terrain comes with a blanket “no dogs” sign. Dogs on hiking trails in Maryland are the norm rather than the exception at most state parks, national park units, and county trail systems, but the exact rules change depending on which agency manages the land, what season it is, and sometimes which half of a single park you’re standing in.

Before you clip on a leash and head for the trailhead, it helps to know which agency you’re dealing with and what that agency actually requires. The sections below break down leash lengths, banned parks, seasonal closures, and a shortlist of trails where your dog is genuinely welcome.

Are Dogs Allowed on Hiking Trails in Maryland

Dogs on hiking trails in Maryland are permitted in the large majority of state parks, national park sites, and county-managed trail systems, though almost always on a leash. Dogs of Charm City confirms that dogs are allowed in State Parks in Maryland, and the trend has moved firmly in that direction over the past several years.

According to Hike With Your Dog, in recent years more than a dozen Maryland state parks have lifted bans on dogs, moving from one of the worst state park systems for dogs to near universal acceptance. That said, a handful of parks still restrict dogs to certain zones, and a few keep a full ban in place, so it pays to check before you commit to a specific destination.

Pro Tip: Call the park office or check the Maryland DNR pet policy page the week of your trip. Rules for beaches, wildlife sanctuaries, and campgrounds shift seasonally, and a park that welcomed dogs last spring may restrict them during nesting or peak-tourist months.

Leash Laws for Dogs in Maryland State Parks

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Maryland’s state park pet regulations are codified in the state administrative code, and they set two different leash-length standards depending on where you are in the park. In developed or designated pet areas, the Code of Maryland Regulations states that in these areas pets shall be on a leash with a maximum length of 6 feet.

Once you move into undeveloped backcountry sections, the rule loosens slightly. The same regulation specifies that in undeveloped areas, pets are permitted on a leash with a maximum length of 10 feet. The Maryland Department of Natural Resources reinforces this on its official pets page, noting that pets must be leashed throughout the park system, with one notable carve-out: pets may be off-leash and under voice control while swimming in designated areas or hunting (with the appropriate permit).

Area Type	Maximum Leash Length	Off-Leash Exceptions
Developed / Designated Pet Areas	6 feet	None
Undeveloped Backcountry Areas	10 feet	None
Designated Swim Areas	No leash required	Voice control required
Licensed Hunting Areas	No leash required	Valid hunting permit required

The DNR also requires vaccination paperwork you’ll want in order before you park the car. Every visiting pet must meet the state’s rabies vaccine requirements for dogs in Maryland, since all pets must be licensed and have all required vaccinations, including a rabies vaccination. Rangers can and do ask to see proof, particularly at parks bordering wildlife management areas.

Rules by Land Type: State Parks vs. National Parks vs. National Forests in Maryland

Not every green space on the map plays by the same rulebook. State parks fall under Maryland DNR, several of the state’s most scenic hiking corridors are federal National Park Service units, and Maryland doesn’t actually contain a national forest — the closest equivalent is its network of state forests, which run under slightly different guidelines than developed state parks.

Land Type	Managing Agency	Typical Leash Rule	Example Locations
State Parks	Maryland DNR	6 ft (developed) / 10 ft (undeveloped)	Gunpowder Falls, Seneca Creek, Patapsco Valley
National Historical Parks / Battlefields	National Park Service	6 ft, physical control at all times	C&O Canal, Antietam, Monocacy
National Park Units	National Park Service	6 ft leash required	Catoctin Mountain Park, Greenbelt Park
State Forests	Maryland DNR Forest Service	Voice control often accepted in remote tracts	Green Ridge State Forest, Potomac-Garrett

Federal sites managed by the National Park Service generally track the same six-foot standard as the state system. At Catoctin Mountain Park, the National Park Paws guide confirms that pets are allowed in Catoctin Mountain Park as long as they are physically restrained on a leash no longer than 6 feet in length at all times or are otherwise physically confined, and pets are permitted in Owens Creek Campground and on park trails.

The Chesapeake and Ohio Canal National Historical Park takes a similar approach but with a widely known exception. Per Hike With Your Dog, the towpath offers unique experiences in the Paw Paw Tunnel and on the Monocacy Aqueduct but the popular star of the 184-mile long park, Section A of the Billy Goat Trail, is a no-go for dogs. The National Park Service’s official C&O Canal pet policy page spells out the current rules park-wide before you commit to a route.

Maryland’s state forests operate with more flexibility than its state parks in some remote sections. One Maryland Pet Guide listing for a western Maryland forest tract notes simply that pets are allowed in all areas of the Forest. No leash requirement is enforced in that particular undeveloped tract — a reminder that forest rules can differ meaningfully from park rules even within the same county.

Trails and Parks Where Dogs Are Banned in Maryland

Despite the overall trend toward pet-friendly access, a short list of Maryland parks and specific trail segments still keep dogs out entirely. According to Hike With Your Dog, the following parks do not allow dogs: Assateague, Calvert Cliffs, Cunningham Falls (except in the wildlands areas), Deep Creek Lake, Fort Frederick State Park, Greenbrier, Herrington Manor, Martinak, Merkle Wildlife Sanctuary, New Germany.

• Deep Creek Lake State Park — no dogs in the developed park area
• Fort Frederick State Park — historic site restrictions apply park-wide
• Herrington Manor State Park — dogs excluded from the main recreation area
• Martinak State Park — no dogs permitted on park grounds
• Merkle Wildlife Sanctuary — closed to dogs to protect nesting and migratory birds
• New Germany State Park — dogs not allowed in the developed recreation zone

Important Note: Bans on parks like Calvert Cliffs and Cunningham Falls have been reported inconsistently across sources — some third-party guides list them as fully closed to dogs, while others describe leashed access to specific trail sections. This tracks with the broader pattern of Maryland parks lifting older restrictions in phases. Confirm current status directly through the park office or Maryland DNR’s official pet policy documentation before planning a visit around either park.

Assateague deserves its own clarification because two different parks share the name. Assateague State Park and Assateague Island National Seashore sit side by side but run separate rulebooks — the federal seashore allows dogs on its beach but not on nature trails, while the adjacent state park applies its own camping and leash requirements documented in the park’s official pet-camping rules.

Waste Disposal and Cleanup Rules in Maryland

Cleanup isn’t optional at any Maryland public land, and rangers treat it as seriously as the leash requirement. Maryland DNR states plainly that pet owners must clean up after their pet, and waste disposal containers are available in most areas.

The National Park Service uses a memorable shorthand for pet etiquette on the C&O Canal towpath. The C&O Canal Trust explains that the National Park Service asks that all visitors with pets remember to B.A.R.K.: Bag your pet’s poop among the rest of the acronym’s guidance on trail etiquette.

Don’t assume every trailhead stocks bags, even at busy county parks. One Anne Arundel County dog park listing reminds visitors to bring your own waste bags and remember to clean up after your pets — good advice to carry over to any state or federal trail, since bag dispensers run empty faster than you’d think on a busy weekend.

Seasonal or Wildlife-Related Restrictions in Maryland

Several of Maryland’s most dog-friendly parks flip their rules with the calendar, usually to protect nesting wildlife or manage crowding during peak beach season. Swallow Falls State Park is a good example: per BringFido, dogs join owners in the day-use area and on the Canyon Trail from the day after Labor Day through Memorial Day weekend, and leashed dogs are also allowed in the campground and on the trails that connect with the state forest year-round.

Beach access follows a similar seasonal pattern across the state. A comparative study of state park dog rules found that Maryland is among six states (Maine, Massachusetts, New Hampshire, Rhode Island, Delaware, Maryland) that lift their beach bans in the off-season, with most Maryland parks opening beach access to leashed dogs after Labor Day.

Hunting season creates its own exception rather than restriction. Maryland DNR’s leash rule loosens specifically for permitted hunters, since pets may be off-leash and under voice control while swimming in designated areas or hunting (with the appropriate permit). If you hunt with a retriever or flushing breed, it’s worth reading up on duck hunting dogs and how Maryland’s wetland seasons affect off-leash allowances before heading into a wildlife management area.

Best Dog-Friendly Hiking Trails in Maryland

Once you know the rules, the fun part is picking a trail. Maryland’s dog-friendly network ranges from flat rail-trails to mountain switchbacks, so there’s a decent match for almost any dog’s energy level.

Trail / Park	Region	Highlight
Western Maryland Rail Trail	Western Maryland	Longest dog-friendly trail in the state at roughly 54 miles
Gunpowder Falls State Park	Baltimore County	Leashed pets welcome on most trails year-round
Seneca Creek State Park	Montgomery County	14 scenic miles across 6,300 acres
C&O Canal Towpath	Statewide (184 miles)	Flat, dog-friendly except Billy Goat Trail Section A
Catoctin Mountain Park	Frederick County	Leashed hiking through Blue Ridge forest terrain
Cylburn Arboretum	Baltimore City	207 acres of gardens and walking paths

AllTrails data backs up the rail-trail pick, noting that the longest dog-friendly trail in Maryland is Western Maryland Rail Trail, estimated to be 54.0 mi long. For dogs that want elevation instead of distance, the same source points to the Appalachian Trail: Pen Mar Park to Harpers Ferry, which has the most elevation gain of all of the dog-friendly trails in the area at 5,790 ft of ascent.

Closer to Baltimore, BringFido highlights Seneca Creek State Park, where leashed dogs are allowed at Seneca Creek State Park, consisting of 6,300 acres that extend along 14 scenic miles. If your dog does better with a shorter, garden-lined stroll, the pet-friendly Cylburn Arboretum in Baltimore, MD has 207 acres of walking trails, grass pastures, many gardens, a mini museum and a greenhouse, and leashed dogs are welcome throughout.

Safety Tips for Hiking With Dogs in Maryland

Rules aside, a safe trail day comes down to preparation. Start with paperwork: keep proof of your dog’s rabies vaccination on hand, since Maryland requires it and rangers can ask for it at any checkpoint.

1. Pack more water than you think you need. Dogs overheat faster than people, and Maryland summers run humid on top of hot. If your dog skips a meal after a long hike, it’s usually not an emergency — but understanding how long dogs can go without food helps you judge when a missed appetite is normal fatigue versus something worth a vet call.
2. Never leave a dog in a parked car. Assateague State Park’s own camping rules warn that temperatures inside a vehicle can easily reach more than 160 degrees if parked in the summer sun, and rolling down or opening a window does not guarantee protection, since temperatures inside a vehicle can climb quickly.
3. Watch for stress signals, not just panting. Excessive yawning in dogs can signal anxiety or overheating on the trail, not just tiredness — a useful cue to slow down or find shade.
4. Bring safe snacks, skip the risky ones. A few bites of a dog-safe treat can help on a long hike; stick to options covered under fruits dogs can safely eat and steer clear of anything resembling guacamole, since avocado is toxic to dogs and shouldn’t make it into a trail snack bag.
5. Manage digging at rest stops and campsites. Some dogs dig when they’re overstimulated by new smells; knowing why dogs dig helps you redirect the behavior before it damages protected trailside vegetation.
6. Recognize overexcitement before it becomes a leash problem. A dog that suddenly starts chasing its tail mid-hike is often just overstimulated by wildlife scent or other dogs — a short break usually resets the behavior.
7. Plan a mellow activity for after the hike. A tired dog is a well-behaved dog for the drive home; a few rounds of low-key outdoor games for dogs back at the car or campsite helps burn off any leftover energy safely.

Pro Tip: Ticks are active across Maryland’s wooded trails from early spring through late fall. A quick full-body check after every hike — paying close attention to ears, armpits, and between the toes — catches most ticks before they attach.

Maryland’s trail system rewards dog owners who do their homework. Check the managing agency, confirm the season, keep your dog leashed at the length the site requires, and you’ll find that the vast majority of the state’s forests, shorelines, and mountain paths are genuinely built for two — one on two legs, one on four.