Ocean Path

Ocean Path is a 2.2-mile, one-way route from the upper Sand Beach parking area to Otter Cove, following Acadia’s rocky shore past Thunder Hole and Otter Cliffs. Many visitors turn around at Otter Point and retrace their steps, making a 4.4-mile walk. Allow two to four hours if you’re stopping to explore. The route climbs gradually, but the footing changes from smooth path to uneven rock farther south. It’s a good way to see several granite coastlines without a mountain climb; Park Loop Road stays close for much of the walk, and the busiest stretches can feel crowded.

The path starts with concrete and packed gravel, rises over a low hill with a wide look along the coast, then descends toward Thunder Hole, about 0.7 mile from the start. This is the smoothest and most accessible section. Thunder Hole is an underwater sea cave, and it only booms when waves, wind, and tide line up. Your best chance is roughly two hours before high tide on a windy day, but it can be quiet, too.

South of Thunder Hole, the tread turns to uneven gravel and rock and passes through spruce and fir. It remains gradual overall, but it no longer feels like a paved walk. Around 1.4 miles in, two granite staircases carry the path up and over the Otter Cliffs section. The cliffs rise above steep drops to the ocean; stay well back from the edge, especially with children, and take care on wet rock.

Monument Cove has a freestanding granite sea stack that waves have cut away from the cliff. Rounded boulders nearby show the same surf at work. At the cove, frame the sea stack with the water and cliff from an established ledge; it gives the rock a sense of scale without needing to leave the path. Past the cliffs, a bell buoy marks a shallow shoal, and the trail shifts between road-side forest and more open shoreline.

People came to walk and climb along this shore before Acadia was a national park; an 1874 guidebook already described a route here. The current line beside Park Loop Road was laid out by the Civilian Conservation Corps in the 1930s. Between Otter Cliffs and Otter Point, look for a plaque honoring John D. Rockefeller Jr. and his contributions to Acadia, including its carriage-road system.

Many people turn at Otter Point, but the trail continues a few hundred feet farther to Otter Cove. A small staircase leads to a view across the causeway, with Cadillac and Dorr Mountains behind it. If you want a shorter, smoother outing, walk from Sand Beach to Thunder Hole and back for about 1.4 miles. Sand Beach has restrooms; the lower lot has five accessible spaces, while reaching the upper trail start from there means taking rugged steps or walking up the steep road. The free Island Explorer serves the lower Sand Beach lot and Thunder Hole. Dogs are allowed on a leash no longer than six feet, and vehicles and visitors aged 16 or older need a park entrance pass.