Acadia National Park is one of the most dog-friendly national parks in the United States, with roughly 100 miles of hiking trails and 45 miles of carriage roads open to leashed dogs. Most trails welcome pets — it’s only a handful of steep ladder-and-rung routes that are closed to them. Below are ten of the best dog-friendly hikes in the park, along with the rules you need to know.
Dog Rules in Acadia
The most important rule: dogs must be on a leash no longer than 6 feet at all times. Retractable leashes extended beyond 6 feet are not allowed. This is federal law in all national parks and is strictly enforced in Acadia. Leashes protect dogs from porcupines (common in Acadia and a frequent veterinary emergency), from wildlife encounters, and from the park’s cliff edges.
Dogs are prohibited on the six cliff-and-ladder trails: Precipice, Beehive, Beech Cliffs, Ladder, Perpendicular, and Jordan Cliffs (between Penobscot East Trail and the carriage road). These trails involve iron rungs, ladders, and exposed rock faces that dogs cannot safely navigate.
Dogs are not recommended on several additional trails due to steep terrain, narrow ledges, or difficult scrambles: Acadia Mountain, Flying Mountain, Giant Slide, Cadillac Mountain West Face, the east end of the Pond Trail (between the carriage road and Featherbed), Norumbega Goat Trail, Bubbles-Pemetic Trail, Penobscot Mountain (Spring Trail), Upper Beachcroft, and Upper Gorge. These are not technically prohibited, but they involve terrain that is dangerous or impractical for most dogs.
Dogs are not allowed on beaches at Sand Beach and Echo Lake from May 15 through October 15 (per NPS). Outside that window, both beaches are dog-friendly. Dogs are also not permitted in public buildings, at the Wild Gardens of Acadia, on ranger-led programs, or for overnight camping at Duck Harbor Campground on Isle au Haut (day hiking with dogs on Isle au Haut is allowed).
Most lakes in Acadia are public drinking water supplies — no swimming is allowed for dogs or people. This includes Jordan Pond, Eagle Lake, and Bubble Pond, among others. Always check posted signs at any body of water.
The park entrance fee is $35 per vehicle (7-day pass). Cadillac Summit Road requires a separate vehicle reservation during peak season (roughly May through October) — check recreation.gov for current dates and availability. Dogs are welcome on Cadillac Mountain itself.
1. Wonderland Trail
Distance: ~1.4 miles roundtrip · Difficulty: Easy · Elevation gain: Minimal
Wonderland Trail is on the “quiet side” of Mount Desert Island, south of Southwest Harbor. The mostly flat path winds through evergreen forest to a rocky cobblestone shoreline with views of the ocean and offshore islands. It is one of the least crowded trails in the park, particularly in the early morning and evening. Dogs can explore the cobble beach at the end (on leash). This is an excellent spot for sunset — not a full ocean-sunset view, but the light on the rocks and water is beautiful. Watch the tide, as it comes in quickly and can cut off sections of the shore.
2. Ocean Path
Distance: ~4.4 miles roundtrip (~2.2 miles one way) · Difficulty: Easy · Elevation gain: ~375 ft
Ocean Path follows the coastline along Park Loop Road from Sand Beach to Otter Point, passing Thunder Hole, Monument Cove, and Otter Cliff. It is one of the most scenic walks in the park and is mostly flat with a well-defined path. Be aware that sections run close to Park Loop Road — keep dogs on a short leash near the road. Early morning is the best time for a quiet walk with fewer people and less traffic. Note that during peak season, dogs cannot access Sand Beach itself.
3. Jordan Pond Path
Distance: ~3.3-mile loop · Difficulty: Easy to moderate · Elevation gain: Minimal
The loop around Jordan Pond offers views of the Bubbles (North and South Bubble mountains) reflected in the water. The east side is flat and smooth; the west side has a rocky section with boulders and tree roots that requires some scrambling — wear proper footwear, not flip-flops. Boardwalk sections keep hikers off sensitive vegetation; dogs can have trouble on narrow boardwalk planks, so go slowly. This trail gets very crowded by mid-morning. The Jordan Pond House restaurant has outdoor lawn seating where well-behaved dogs on leash are welcome — it’s a popular post-hike spot for popovers.
4. Cadillac South Ridge Trail
Distance: ~8.0 miles roundtrip · Difficulty: Moderate · Elevation gain: ~1,350 ft
The South Ridge Trail climbs gradually from near Blackwoods Campground to the summit of Cadillac Mountain (1,530 ft), the highest point on the Atlantic coast of the United States. It is the longest dog-friendly trail to a major summit in the park. Carry plenty of water for both you and your dog — there is no water source along the trail and the granite can get hot in direct sun. You can also hike partway and turn around for a shorter outing. If you cannot get a Cadillac Summit Road vehicle reservation, this trail is the alternative for reaching the summit on foot — including for sunrise or sunset.
5. Gorham Mountain Trail
Distance: ~1.8 miles roundtrip (summit out-and-back) or ~3.0–3.5 miles as a loop via Ocean Path · Difficulty: Moderate · Elevation gain: ~440 ft
Gorham Mountain (525 ft) is a relatively short climb with panoramic views of Sand Beach, the Beehive, Thunder Hole, and the ocean. The trail is rocky and open granite in places, with wildflowers in summer and blueberries in late July and August. Dogs should skip the optional Cadillac Cliffs Trail spur (which has rungs and ladders), but the main Gorham Mountain Trail is fully dog-friendly. Combined with Ocean Path for the return, it makes an excellent dog-friendly loop hike.
6. Great Head Trail
Distance: ~1.4–1.7-mile loop · Difficulty: Moderate · Elevation gain: ~160 ft
Great Head is a rocky peninsula on the east side of Sand Beach with ocean views in multiple directions. The loop trail climbs through forest to open granite with views of Sand Beach, Frenchman Bay, and the Schoodic Peninsula. It is manageable for most dogs, though there are some rocky sections. Remember that dogs cannot access Sand Beach itself during peak season (May 15–October 15), so plan your approach accordingly — the trailhead can also be reached from the Schooner Head area.
7. Jesup Trail
Distance: ~2.2 miles · Difficulty: Easy · Elevation gain: Minimal
Jesup Trail is a flat boardwalk path through birch and hemlock forest — one of the most accessible trails in the park. It is excellent for dogs that do best on level ground, and good for birding. The boardwalk is wide enough for dogs and people to pass comfortably. Walking the loop clockwise provides the best sequence of scenery. This is not a “views” hike — it is a quiet forest walk, and a good option on hot days when shade is welcome.
8. Lower Hadlock Pond Trail
Distance: ~2.3 miles · Difficulty: Easy to moderate · Elevation gain: Minimal
This trail near the Parkman Mountain area passes through forest to Lower Hadlock Pond and includes a waterfall that is best seen shortly after rain — in dry conditions, it may be reduced to a trickle. The trail can be muddy after rain, which most dogs seem to enjoy. A quiet morning hike without the crowds found on the more popular east-side trails.
9. Bar Island Trail
Distance: ~2.0 miles roundtrip · Difficulty: Easy · Elevation gain: Minimal
Bar Island Trail is unique — it is only accessible at low tide, when a gravel bar emerges connecting Bar Harbor to Bar Island. You walk across the exposed ocean floor (with your leashed dog) to the forested island, which has a short loop trail with views back toward Bar Harbor and Frenchman Bay. Check the tide chart before going — the bar is passable for approximately 1.5 hours on either side of low tide. Getting stranded on the island at high tide is a real possibility if you miscalculate.
10. Carriage Roads
Distance: 45 miles of roads (various loops and segments) · Difficulty: Easy · Surface: Crushed gravel, wide
The carriage roads are the single best resource for dog owners in Acadia. Built by John D. Rockefeller Jr. between 1913 and 1940, these wide, gravel-surfaced roads wind through the interior of the park, crossing stone bridges, passing lakes, and running through dense forest. They are closed to motor vehicles. Dogs, horses, hikers, and cyclists share the roads. The flat, smooth surface is gentle on dog paws, and the forest canopy provides shade on hot days and shelter in rain. Any section is worth exploring — popular stretches include the loop around Eagle Lake, the Witch Hole Pond area, and the roads near Jordan Pond and Bubble Pond. Some carriage roads may have seasonal closures for maintenance — check the NPS website before your visit.
Tips for Hiking with Dogs in Acadia
Ticks: Acadia has a significant tick population, most active from late spring through early fall. Check your dog (and yourself) thoroughly after every hike. Use a veterinarian-recommended tick prevention product.
Porcupines: Porcupines are common in Acadia and are one of the most frequent reasons dogs end up at the local veterinary hospital. A leashed dog is far less likely to have an encounter. If your dog does get quilled, seek veterinary care immediately — do not attempt to remove quills yourself.
Water: Bring more water than you think you need, for both you and your dog. Most lakes and ponds in Acadia are off-limits for swimming (public water supply), and saltwater from the ocean can cause vomiting and dehydration if dogs drink it.
Waste: Pick up after your dog on all trails, carriage roads, campgrounds, and parking areas. Carry bags with you.
Campgrounds: Dogs are welcome at Blackwoods, Seawall, and Schoodic Woods campgrounds. They are not allowed for overnight stays at Duck Harbor Campground on Isle au Haut.
Bar Harbor: The town of Bar Harbor, just outside the park, is extremely dog-friendly. Many restaurants have outdoor seating that welcomes dogs, and shops often put out water bowls. If you need to leave your dog for a ladder-trail hike, local kennels are available — check with the Bar Harbor or Ellsworth chamber of commerce.
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