Acadia National Park Scenic Drives: Acadia Trails Drive (2026)

Start before 8 AM. Not 9. Not 8:30. If you hit the Park Loop Road after 8:30 from June through October, expect to spend more time in your car looking at brake lights than looking at the scenery. The acadia trails drive is a 27-mile loop that connects most of the park's major sights, and timing is the difference between a peaceful morning and gridlock at every pullout.

The Drive at a Glance

The Park Loop Road serves as the backbone of the acadia trails drive experience. It begins at the Hulls Cove Visitor Center, runs along the ocean side of Mount Desert Island, cuts inland past Jordan Pond, and loops back. A section near Sieur de Monts is operating under a detour from April 13 to June 12, 2026 (excluding Memorial Day weekend), redirecting traffic out to Mount Desert Street and Main Street following Route 3 to re-enter at Sieur de Monts.

Stop by Stop

Hulls Cove Visitor Center

This is your starting point. The visitor center sits at the entrance to the one-way section of Park Loop Road. Pick up a park map here - the printed version shows pullout numbers that correspond to the road markers, and cell service drops out at several points along the drive. Restrooms and water fill stations are available. The parking lot fills by 9 AM, which reinforces the early start recommendation.

Sand Beach Entrance

About 3 miles in, the road drops down to sea level. From this overlook you can see Sand Beach, a 290-yard stretch of crushed shell sand wedged between granite headlands. The water temperature rarely tops 55°F even in August. Most visitors underestimate how quickly the parking lot here fills - it's common to see cars circling by 9:30 AM. The Great Head Trail starts from the far end of the beach if you want to stretch your legs after the drive.

Thunder Hole

Pullout located approximately 4 miles from the visitor center. Thunder Hole is a narrow inlet where wave action compresses air into a submerged chamber, creating a boom under the right conditions. Timing matters here: arrive within two hours of high tide for the best sound effect. Low tide produces nothing but a quiet splash. Rangers will tell you that the parking lot here is one of the most congested on the whole route - arriving before 9 AM or after 3 PM is your best bet for a spot.

The raised wooden platform gives you a direct view down into the slot. From this overlook you can see the water surge and recede in a predictable rhythm, and on days with 3-foot-plus swell, the spray can reach the viewing area. Bring a rain jacket if you plan to stand close.

Otter Cliffs

Continuing south, the road hugs the coastline. Otter Cliffs rise 110 feet above the Atlantic, offering direct views across Frenchman Bay. This pullout is less crowded than Thunder Hole and gives a better sense of the coastline's scale. The Ocean Path trail runs parallel to the road here - a 4.4-mile walking route that connects Sand Beach to Otter Point. If you're combining the acadia trails drive with some walking, this section provides several easy access points.

Jordan Pond

About 10 miles in, the road turns inland. The Jordan Pond parking area serves the Jordan Pond House restaurant (popovers are a known quantity here - they've been serving them since the 1890s). From the gravel lot, the view north across Jordan Pond toward the Bubbles is one of the most photographed in the park. The two rounded peaks - North Bubble and South Bubble - sit at the pond's north end, their shapes the result of glacial smoothing.

The hiking trails around Jordan Pond start from this lot. The Jordan Pond Path is a 3.3-mile loop that stays close to the shoreline. If you have time for a short walk before continuing the drive, this is the one to take.

Cadillac Mountain Summit Road

The Cadillac summit road branches off the Park Loop Road near the 15-mile mark. This 3.5-mile road climbs to the 1,530-foot summit - the highest point on the eastern seaboard north of the Florida Keys. From May 22 through October 27, 2026, a vehicle reservation is required. The best time to visit Cadillac is either sunrise (the summit catches first light before anywhere else in the continental US from October through March) or late afternoon when the tour buses have cleared out.

From the summit you can see the Porcupine Islands, Bar Harbor, Frenchman Bay, and on clear days, the outline of Mount Katahdin 90 miles north. The parking situation here is tight - the summit lot holds about 150 vehicles, and on summer mornings, it's full before the sun clears the horizon.

Sieur de Monts

The final major stop before the road loops back. This area houses the Abbe Museum's original building, the Wild Gardens of Acadia (a collection of native plants arranged by habitat), and the Jesup Path boardwalk. The trail to Sieur de Monts connects to the Gorge Path and the Kebo Mountain Trail. If you're doing the full acadia trails drive, this is a good place to park for 30 minutes and walk the Jesup Path boardwalk through the marsh.

Timing and Crowds

The Park Loop Road operates seasonally. The full 27-mile loop opens around mid-April and closes December 1, weather permitting. The section from Sand Beach to Jordan Pond is one-way counterclockwise only from mid-June through mid-October. During the shoulder seasons (April-May and October-November), sections of the road are two-way, which changes the driving experience significantly.

Tour buses arrive at Thunder Hole and Cadillac Mountain between 10 AM and 2 PM. If you pass a bus stop during those hours, expect crowds at the overlooks. The counterclockwise direction helps - most buses enter from the Sieur de Monts side and hit the southern section later in the day.

The current detour affecting the Park Loop Road from April 13 to June 12 adds about 10 minutes to the drive. Follow the posted signs through Bar Harbor - Google Maps doesn't always pick up seasonal road changes here.

Driving Logistics

Practical Takeaways

1. Start the acadia trails drive before 8 AM. The first hour of operation is the only time you'll have pullouts mostly to yourself.
2. Vehicle reservations for Cadillac Mountain go live 90 days in advance on recreation.gov. They sell out within hours for sunrise time slots.
3. The detour from Kebo Street to Sieur de Monts runs through June 12, 2026. Plan an extra 10 minutes for this section.
4. Cell service drops out between Thunder Hole and Otter Cliffs. Download maps before you start.
5. Pack extra water for this stretch - the Park Loop Road has no water stations between the visitor center and Jordan Pond House.
6. The one-way section runs counterclockwise only. Respect the direction - rangers enforce it.
7. If you hit the loop after 10 AM and lots are full, skip Thunder Hole (the most crowded stop) and save time for Jordan Pond instead. The trade-off is worth it.

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