Starting from Portland, make your way to Portland’s Old Port now—about 15 minutes by car, depending on where you are, or an easy walk if you’re already downtown. The cobblestoned streets around Commercial Street and Fore Street are best explored on foot. Street parking is limited and metered; the Fore Street Garage is a practical backup, with rates commonly around $5–15 depending on duration. Wander the waterfront and wharves before heading to the Portland Museum of Art in the Downtown Arts District. Allow about 1½ hours for its Maine-focused and American collections; it is generally open Friday from late morning into the afternoon, but confirm the 2026 schedule and admission prices—typically about $20–25 for adults—before setting out.
Around 12:30 PM, walk or take a short ride back toward the Old Port for Eventide Oyster Co. Expect a wait at peak lunch, especially on a Friday; the restaurant is known for oysters, lobster rolls, and inventive seafood, with lunch running roughly $25–45 per person before drinks and tip. Afterward, drive or rideshare about 10 minutes to the Eastern Promenade in Munjoy Hill. Follow the waterfront paths for Casco Bay views and a relaxed one-hour stroll; the park is free, and the promenade’s broad lawns make it easy to slow down after lunch.
Finish at Bug Light Park in South Portland, about 10–15 minutes by car from the Eastern Promenade via the Casco Bay Bridge. The park is free, with ample parking, open shoreline, and excellent views of Portland Harbor and the small Spring Point Ledge Lighthouse across the water. Give yourself an hour to walk the harbor edge and watch the boats come in; late afternoon is usually breezier, so bring a light layer. This is a particularly good first-day stop because it feels distinctly coastal without requiring another long drive.
Start at Kennebunk Beach with about 90 minutes for an easy shoreline walk and sea-glass hunting. Early morning is the best time: the beach is quieter, and low tide—check the day’s tide table before leaving—can reveal pieces along the wrack line. Parking is limited and often restricted to residents in summer, so look carefully for legal public spaces and bring a small bag rather than collecting anything embedded in the dunes or marked as protected. From the beach, drive roughly 10 minutes to Dock Square in Kennebunkport, where you can spend an hour browsing galleries, coastal home shops, and small boutiques around the harbor; arrive before noon for easier parking in the municipal lots.
Walk or make the short drive to The Clam Shack for a classic fried-clam basket or lobster roll, usually about $20–40 per person. It is a casual, seasonal spot, so expect a line at lunchtime and confirm its September hours before setting out. Eat by the water if seating is available, then allow another 10–15 minutes by car to reach Saint Ann’s Church on the waterfront.
Spend about 45 minutes at Saint Ann’s Church, an unusual stone chapel with open ocean views and peaceful grounds; be respectful if services or private events are taking place. Late afternoon is ideal for the drive—about 15 minutes—to Goose Rocks Beach, where the shoreline feels quieter and more spacious than the central beaches. Walk for roughly 90 minutes, checking the high-tide line for sea glass while leaving shells and natural material in place. Bring water, a light layer, and shoes that can handle uneven stones; beach access and parking rules can be strict, and September conditions vary, so verify access locally before making the final drive.
After breakfast in Kennebunkport, drive north to Rockland via US-1 and ME-17, allowing roughly 2¼–2¾ hours plus a quick coffee or viewpoint stop if needed. Aim to arrive around 10:00 AM and go straight to Rockland Breakwater Lighthouse. The breakwater is nearly a mile long, so allow about two hours for the walk out and back; the granite can be uneven and slippery, especially in sea spray, and there are no services at the lighthouse. Park at the breakwater lot, arrive early enough to find a space, and bring water and a wind layer.
Return toward downtown for the Farnsworth Art Museum, about a 10-minute drive from the harbor. Plan 1½ hours for its Maine-focused collection, including works connected with the Wyeth family and other artists who captured the state’s coast. Check the museum’s September hours and admission online before setting out; galleries are generally closed one day each week, and the museum is usually open late morning through the afternoon.
For lunch, stop at The Lobster Shack on the Rockland waterfront for a relaxed lobster roll, fried seafood, or chowder—expect roughly $20–40 per person. It is casual and popular, so a little flexibility is useful if there is a queue; eat outside when the weather cooperates and watch the working harbor. After lunch, walk or drive a few minutes to the Maine Lighthouse Museum, where an hour is enough for its displays on lighthouse keepers, Fresnel lenses, rescue equipment, and Maine’s maritime technology. Confirm the day’s hours before visiting, as seasonal schedules can change.
Finish with a quieter coastal stop at Birch Point State Park in Owls Head, about 15–20 minutes south of Rockland. Spend around 1½ hours on the small sandy beach and along the rocky coves, where sea glass may turn up near the high-tide line—look, but leave anything embedded or unusually historic in place. The park has a modest day-use fee, seasonal restrooms, and limited parking; late afternoon is generally calmer and gives the beach a warm coastal light. Check tide and sunset times, and remember that this is a search-and-stroll stop rather than a guaranteed sea-glass find.
After the short drive north from Rockland, aim to reach Camden Harbor around 8:30 AM, when the waterfront is still calm and parking is easier. Leave the car in the downtown municipal lots near Harbor Park—metered or paid parking is typically around $2–$4 per hour in season—and stroll the harbor before wandering along Main Street. Give yourself about an hour to watch lobster boats and schooners prepare for the day; the shops generally open later, so this is best enjoyed as a quiet waterfront walk rather than a shopping stop.
Drive roughly 10 minutes to Camden Hills State Park and head up Mount Battie. The summit road is seasonal and may have a day-use fee of about $6–$8 for out-of-state visitors; if the gate is closed or you prefer a hike, trails from the park entrance take longer and require sturdy shoes. Allow about two hours for the summit, short walks, and the sweeping view over Penobscot Bay and the nearby islands. Return to the village for a seafood lunch at Waterfront Restaurant, where a table overlooking the harbor makes the most of the setting; expect roughly $25–$50 per person, and arrive early or call ahead because midday tables fill quickly.
Walk back toward the docks for the Schooner Olad & Cutter Owl sail, usually a two-hour outing with views of the islands and good chances of spotting seals, porpoises, or seabirds. Confirm the sailing time and book ahead—fares commonly run about $60–$90 per adult—and bring a warm layer even in September. After disembarking, take a short walk inland to Megunticook Falls, beside the village, for a 30-minute photo stop and a pleasant final wander through Camden. The falls are free and accessible from nearby downtown streets, though the rocks can be slick; for dinner, stay in the village rather than adding another drive, and keep the evening flexible around the sailing schedule.
Drive from Camden to Belfast on US-1, allowing about 45–55 minutes. Leaving around 7:30 AM puts you at Belfast Harbor Walk by roughly 8:30 AM, before the waterfront gets busy. Park in one of the downtown lots near Steamboat Landing and follow the shoreline toward the footbridge; this is an easy one-hour stroll with working boats, lobster gear, and plenty of seabirds. The harbor is especially atmospheric in the morning, when the light catches the Passagassawaukeag River and the town is just waking up.
From the waterfront, walk or drive a few minutes inland to the Belfast Rail Trail on the Passagassawaukeag. Allow about 1½ hours for the wooded former rail corridor; it is mostly level and comfortable, though a few sections can be muddy after rain. Afterward, head to Young’s Lobster Pound for a relaxed early lunch or seafood dinner-style meal—order at the counter and expect roughly $25–$50 per person depending on whether you choose lobster, a lobster roll, or a platter. Check the day’s hours before setting out, since seasonal schedules can change in September.
After lunch, drive about 15 minutes north on US-1 to Moose Point State Park in Searsport. The park’s rocky shoreline, tide pools, and forest paths make a good unhurried afternoon stop; plan on about 1½ hours, and bring shoes with decent grip for the rocks. The park generally charges a modest Maine vehicle day-use fee, and low tide is best for exploring the pools—avoid climbing onto wet, seaweed-covered ledges. Return to Belfast for a quieter finish at Belfast City Park, where you can spend an hour on the waterfront lawn and small beach. It is a pleasant place to watch the late-day light over the river; bring a light layer, as the breeze can turn cool even in September.
Leave Belfast around 6:00 AM for Bar Harbor, then continue into Acadia National Park for Park Loop Road. Aim to reach the Sand Beach area by about 7:30 AM; parking fills quickly, and you’ll need an Acadia vehicle reservation for the Cadillac Summit Road only—not for Park Loop Road itself. The road is mostly one-way, so keep your pass, water, and layers handy, and expect limited cell service. Walk the Ocean Path from Sand Beach toward Otter Point, allowing roughly two hours for the rocky shoreline, surf views, and pauses at Thunder Hole; wear shoes with good grip and stay well back from waves.
Drive about 15 minutes inland to Jordan Pond House for lunch or tea beside Jordan Pond and the Bubbles. The restaurant is seasonal and hours can change, so check the same-day schedule; budget roughly $20–45 per person, and expect a wait at peak lunch hours. Afterward, return to Bar Harbor—about 25–30 minutes from Jordan Pond—and arrive at the harbor at least 30 minutes before your Mount Desert Island Whale Watch departure. The cruise typically lasts two to three hours and may encounter whales, seals, porpoises, and seabirds; bring a warm layer even on a sunny day, and consider motion-sickness medication before boarding.
After the cruise, take the easy 45-minute Bar Harbor Shore Path along the waterfront for sunset, beginning near Agamont Park and continuing toward Wayman Lane. If you have time, grab a quick takeaway meal in downtown Bar Harbor before leaving around 6:00 PM. Drive south via Route 3 through Trenton, then use Route 1 toward Bangor and continue to Portland, allowing roughly 3½–4 hours with traffic. A practical meal stop is around Bangor; refuel there as well, since options become sparser late in the evening on the final stretch.