Start with Portland Head Light in Cape Elizabeth, about a 15-minute drive from downtown Portland. The lighthouse grounds are open year-round from sunrise to sunset, and admission to the park is free, though summer parking is typically paid—allow roughly $2–$5, with card payment generally available. Spend about an hour on the overlook paths around the lighthouse and rocky shoreline, then continue directly into Fort Williams Park for another hour among the former fortifications, open lawns, and coastal trails. Wear shoes with good grip; the rocks can be uneven, and August afternoons often bring strong sun and wind.
Drive back into the Old Port—usually 15–20 minutes, but closer to 30 minutes in summer traffic—and park in a garage rather than circling for street parking. Have lunch at Eventide Oyster Co. on Middle Street, known for its oysters, lobster roll, and New England seafood served with a slightly modern twist. Budget about $25–$45 per person before drinks and tip. It is a popular stop, so expect a wait at peak lunch time; if the queue is long, put your name down and take a short wander through the Old Port’s cobbled streets while you wait.
From Eventide Oyster Co., walk roughly 10 minutes west to the Portland Museum of Art in the Arts District. Set aside about 90 minutes for its Maine-focused holdings, Impressionist works, and rotating exhibitions. Check the museum’s current Tuesday–Sunday hours and ticket availability before setting out; adult admission is generally in the $20 range, with discounts for seniors and students. The surrounding streets are easy to explore on foot, and this is a good air-conditioned pause during the warmest part of the day.
Finish at the Eastern Promenade, a 10-minute drive or roughly 25-minute walk from the museum, depending on your energy. Park along the residential streets where permitted, then stroll the waterfront paths for broad views across Casco Bay and the islands. It is especially pleasant near sunset, when locals gather with takeout, dogs, and lawn chairs; bring a light layer, since the breeze picks up quickly. For dinner, you can stay casual with food from the neighborhood or simply enjoy the promenade as a relaxed end to your arrival day.
After arriving in Rockland, head first to Rockland Breakwater Lighthouse for the two-mile round-trip walk along the granite breakwater. Allow about two hours, including time to pause for harbor views and watch boats entering the channel; the footing is uneven, so wear sturdy shoes, and avoid the outer rocks in rough weather. Parking at the breakwater is generally free, but the lot can fill on summer mornings—arrive early and bring water, since there are no services along the breakwater.
Return toward downtown and spend late morning at the Farnsworth Art Museum, an easy 10-minute drive or roughly 20-minute walk from the breakwater. Its galleries are especially strong on Maine artists and the Wyeth family; allow around 90 minutes. The museum is typically open daily in summer, generally from 10 a.m. to 5 p.m., with admission usually around $20–25 for adults—confirm hours and ticket details before setting out, as schedules can change.
For lunch, walk or drive a few blocks to Claws on Main Street, a relaxed spot for lobster rolls, fried seafood, and other Maine standards. Budget about $25–50 per person, and expect a casual, sometimes busy midday service. Afterwards, take an unhurried hour around the Rockland waterfront, browsing the small galleries and watching activity around the working harbor rather than trying to fit in another formal attraction. From downtown, allow about 35–40 minutes by car to reach Port Clyde via ME-131 and the St. George Peninsula.
Finish at Marshall Point Lighthouse & Museum, where the short coastal grounds and rocky shoreline make a particularly scenic late-day stop. The museum is usually open seasonally in the afternoon, often until around 5 p.m.; admission is generally modest or donation-based, but check the day’s hours before leaving Rockland. Give yourself about 90 minutes here, including time to walk beyond the lighthouse and explore the small harbor village of Port Clyde. The road back to Rockland takes roughly 40 minutes; if you are continuing to Bar Harbor the next morning, return before dark, refuel, and keep the evening simple.
Leave Rockland around 7:00 AM with coffee and a full tank, allowing roughly 2½ hours to reach Schoodic Peninsula through coastal towns and the Schoodic National Scenic Byway. This quieter arm of Acadia National Park is a wonderful contrast to Mount Desert Island: expect spruce forest, open ocean, and granite shoreline with considerably less traffic. There is no park entrance station here, but an Acadia pass is still required; the standard private-vehicle pass is about $35 and is valid throughout the park. Save offline maps, since cell service can be patchy, and use the signed pullouts rather than stopping along the narrow road.
Continue to Schoodic Point for about 45 minutes. Walk the short paths over the ledges and watch the waves strike the granite—stay well back from the edge, especially if the water is rough. Then drive to the Schoodic Woods Campground area for a relaxed forest walk and picnic, allowing about an hour. Bring lunch supplies from Rockland or Winter Harbor, as food options around the peninsula are limited and seasonal; check current Acadia alerts and road conditions before setting out.
After the peninsula, continue toward Mount Desert Island and stop at Jordan Pond House for late lunch, ideally by mid-afternoon. The restaurant is known for its popovers and tea, with lunch generally running about $20–40 per person; summer waits can be substantial, so use the reservation or wait-list options if available. Parking at Jordan Pond fills quickly, and an Acadia vehicle reservation may be required for the Cadillac Summit Road but is not normally needed simply to visit Jordan Pond—verify the current park rules before travel. From there, drive to your Bar Harbor lodging, roughly 30–45 minutes depending on traffic, and leave the car parked for the evening.
Finish with an easy stroll along the Bar Harbor Shore Path, beginning near Agamont Park and following the waterfront past the harbor and the Shore Path’s historic summer cottages. It takes about an hour at an unhurried pace, with plenty of opportunities to browse downtown shops afterward. The path is free and open year-round; wear a light layer, since the waterfront cools quickly, and check the tide if you want the best chance of seeing exposed sandbars near the harbor.
Start before sunrise for Cadillac Mountain, the island’s highest point and one of the best places for broad views over Frenchman Bay, the Porcupine Islands, and the surrounding coast. Reserve your timed vehicle entry through the official Acadia National Park reservation system in advance; the park entry pass is separate, and summer sunrise reservations sell out quickly. From downtown Bar Harbor, allow roughly 25–30 minutes by car, and arrive with a warm layer—even in August, the summit can be breezy. Give yourself about 1½ hours for the drive, overlook, and short walks around the summit.
Drive down the Park Loop Road toward Sand Beach, about 20 minutes from the summit depending on traffic. The beach is compact and striking, tucked between granite headlands; parking fills early, so arriving in the morning is a real advantage. Spend around 45 minutes here, then continue on foot along Ocean Path toward Thunder Hole, a scenic stretch of roughly 1½ hours round trip depending on how far you go. The path is mostly manageable but rocky in places, so wear shoes with good grip. Thunder Hole is most dramatic near high tide, though the timing varies, and it can be quieter and safer to enjoy the shoreline viewpoints rather than crowding the railing.
Return to the car and continue along the loop road to Jordan Pond, allowing about 25–30 minutes with normal summer traffic. Spend up to two hours walking beside the water; you do not need to complete the full circuit to enjoy the classic view toward The Bubbles, and the rocky sections on the far side make sturdy footwear worthwhile. Parking is limited and often managed during peak periods, so arrive with patience and consider waiting briefly rather than circling aggressively. Afterward, head back to Bar Harbor—roughly 25 minutes—and leave time for a stroll through the downtown lanes and waterfront before dinner.
Have dinner at Side Street Cafe in downtown Bar Harbor, a relaxed choice for burgers, salads, and local seafood, with typical spending around $20–40 per person before drinks and tip. August tables can fill quickly, so go early or expect a wait; the restaurant is convenient for exploring nearby shops afterward without moving the car. Downtown parking is often metered or time-limited in summer, and some spaces become easier to find a few blocks away from the waterfront.
Leave Bar Harbor around 8:00 AM for Portsmouth, allowing roughly 4½–5½ hours on ME-3, US-1, and I-95, plus a coffee or fuel stop. This is a long transfer day, so keep the morning simple and aim to arrive mid-afternoon. Once in Portsmouth, leave the car at the Hanover Street Parking Garage or Foundry Place Garage—both are convenient for downtown and generally charge around $2–$3 per hour, with daily maximums. From there, walk through the compact Portsmouth Historic District, where Market Square, Bow Street, and the nearby brick lanes are ideal for an unhurried introduction to the city; allow about 1½ hours for browsing shops, admiring the Federal-era architecture, and wandering toward the waterfront.
Continue south on foot toward Strawbery Banke Museum, roughly a 10-minute walk from the heart of downtown. Set aside about two hours for the restored houses, gardens, and costumed interpreters telling Portsmouth’s history from the 17th century onward. The museum is typically open daily in summer from late morning into the afternoon; admission is usually about $25–35 for adults, and the outdoor grounds are best explored with comfortable shoes. Afterward, take a short break around South End or stroll along nearby Hancock Street before returning downtown for dinner.
For a polished final meal, reserve at The Black Trumpet on Bow Street, a refined restaurant known for seafood, seasonal New England cooking, and an excellent wine list. Dinner generally runs about $50–90 per person before drinks, and reservations are wise in August. Afterward, walk 10 minutes to Prescott Park on the Piscataqua River for a peaceful 45-minute finish. The gardens and waterfront paths are free and open into the evening; sunset light over the river makes this a particularly pleasant place to slow down after the drive and dinner.