Acadia's coastline, forests and mountain views reward a stay of several days, but an RV campsite and a sightseeing route are two separate planning decisions. A rig can fit its reserved site and still be prohibited from a road or parking lot elsewhere in the park. Choose your base, confirm the approach to it and plan how you will explore once the RV is parked.

Choosing a Campground

Acadia has three drive-in campgrounds that take RVs, plus one boat-access-only site. All reservations go through Recreation.gov; none of the three can be booked by phone or by showing up at the gate. None of the three publishes a single campground-wide RV length limit either, which is why the site you pick matters more than the campground you pick. Recreation.gov states the consequence plainly for Blackwoods and Schoodic Woods: review the site details and the equipment allowed before you book, because a reservation whose equipment exceeds the limits listed for that site can be cancelled.

Blackwoods Campground is on the east side of Mount Desert Island, about five miles south of Bar Harbor on Route 3, close to the popular stops along Park Loop Road. Most of its sites are built for tents and a smaller number can take RVs, so read the exact Recreation.gov site description for equipment fit and amenities; do not use another site's photograph or a campground-wide figure as approval for your rig. The NPS Blackwoods page notes that showers are not provided in the campground, with fee showers available nearby in Otter Creek. Generators are not allowed in B-Loop at all, and in A-Loop they may run only between 8 and 10 in the morning and 4 and 7 in the evening, with you at your site.

Seawall Campground is on the west side of Mount Desert Island, about four miles south of Southwest Harbor on Maine Route 102A. Its Recreation.gov listing is unusually direct about equipment: it says that some sites can take RVs up to 35 feet, that maneuvering an RV in the campground can be very difficult, that the campground was not designed for large RVs and trailers and that no accommodation can be made for a rig that does not fit the site you reserved. Treat 35 feet as the outer edge of what a handful of sites can hold rather than a target, confirm the current operating dates and choose an RV-compatible site instead of a walk-to tent site. The NPS Seawall page also notes that campground showers are not available and points visitors to private vendors a short drive away. Generators are not permitted in Loops A, B, D or G; in Loop C they may run only between 8 and 10 in the morning and 4 and 7 in the evening.

Schoodic Woods Campground is on the mainland Schoodic Peninsula near Winter Harbor, not on Mount Desert Island. Every site except the group and hike-in sites has electric service, and the B-Loop sites add water, so this is the one Acadia campground where an RV can plug in. Match the exact reservable site to your equipment. The 21-foot figure that gets repeated about Schoodic is a restriction on Schoodic Loop Road beyond the day-use parking area, not a campground limit, and oversized vehicles can be left in that day-use parking area while you explore the loop another way. NPS lists the site categories and location, including a drive of roughly an hour to an hour and a quarter to Bar Harbor. There are no campground showers.

No Acadia campground offers a sewer hookup, so nowhere in the park is a full-hookup stay. All three do have a dump station and running water. If your rig depends on shore power and sewer every night, plan on a private campground in Bar Harbor, Trenton or Ellsworth as a base, and treat the park itself as a day-trip destination; confirm rig-length limits and hookup availability directly with any private park before booking, since availability and site specs change season to season.

Booking the Reservation

NPS's campground reservation guidance says that starting on December 1 each year, 90 percent of sites at Blackwoods, Seawall and Schoodic Woods open six months ahead on the first of the month at 10 a.m. Eastern. The remaining 10 percent open at 10 a.m. 14 days before arrival on a rolling basis. That second release is planned inventory, not just cancellations, so a May arrival has a December booking date and a rolling one in early May. Reservations are made in advance through Recreation.gov, not at the campground office. Same-day online reservations may be possible when sites are available.

Before the booking window opens, create a shortlist of suitable sites and note their individual limits. Have your equipment type and dimensions ready. If the preferred site is unavailable, use a prechecked alternative rather than reserving a tent-only or undersized site just to secure a date.

Save the confirmation and arrival instructions offline; cell coverage at the campgrounds is poor. A campsite booking does not include the park entrance pass or a Cadillac Summit Road reservation.

Getting Around: Size Limits That Actually Matter

Read Acadia's oversized-vehicle restrictions before choosing a sightseeing route. RVs and trailers are excluded from Cadillac Summit Road, Echo Lake Beach Road and Lurvey Spring Road outright and from the Sand Beach parking lots, the Jordan Pond south parking lot, the Bubble Pond parking lot and Schoodic Loop Road beyond the day-use area near the campground. These are access restrictions, not just advice about tight maneuvering.

The same page lists the height limits, and they differ by segment. The shortest underpass on Park Loop Road is 11 feet 8 inches. Park Loop Road is closed to vehicles taller than 12 feet 2 inches from Sieur de Monts to the Sand Beach Entrance Station and taller than 12 feet from Fabbri Picnic Area to Wildwood Stables. Stanley Brook Road, a common connector to the loop, is the lowest at 10 feet 4 inches, and Fish House Road is limited to 11 feet 6 inches. NPS gives buses that exceed the 11-foot-8-inch underpass a specific escape route off Park Loop Road; that is bus guidance, and it is not a general RV workaround, nor is straddling a lane to gain clearance. Have the campground or park confirm an appropriate approach for your actual height, length and equipment, and obey current signs and closures even when a saved map shows a through route.

Cadillac Mountain Requires a Separate Plan

RVs and trailers are prohibited on Cadillac Summit Road. Vehicles longer than 21 feet, including attached racks and hitch equipment, are also prohibited, and NPS states that a vehicle over the limit will be denied entry even with a valid reservation. For an eligible vehicle, the 2026 reservation season runs May 20 through October 25. The $6 reservation is separate from the park entrance pass. Thirty percent of the slots are released 90 days ahead and the other 70 percent two days ahead, both at 10 a.m. Eastern. Sunrise and daytime bookings have different entry windows and frequency limits, so read the terms for the chosen slot. NPS resets these dates and windows every year, so check the current season rather than reusing last year's plan.

The Island Explorer does not serve Cadillac Summit Road. If you plan to hike or bike instead, choose an appropriate route for your ability and conditions; this is a separate outing, not a substitute vehicle access route.

Plan Local Transport Before Arrival

Compare the seasonal Island Explorer routes with the places on your itinerary and your campground location. The buses stop at campgrounds, carriage road entrances and many trailheads, and riding one into the park still requires an entrance pass. There is no Island Explorer service between the Schoodic Peninsula and Mount Desert Island, so a Schoodic Woods base means driving between the two sections. Check the current timetable, last return service and accessibility arrangements before relying on a bus for the day. If you will use a separate car, confirm where it may be parked; Blackwoods allows only one vehicle per campsite and sends the rest to an overflow lot.

Budget for Separate Bookings

Keep three charges as separate lines in the trip budget: the campsite fee, which is paid when you reserve rather than at the campground; the park entrance pass, which is required in the park and while staying in a campground; and the $6 Cadillac Summit Road vehicle reservation if you plan to drive up in an eligible vehicle. Check the current official fee pages for the entrance-pass rates that apply to your vehicle. A campsite payment does not include park entry, and a park pass does not reserve a campsite.

Planning the Visit

Build the visit in this order: compatible campsite, safe approach route, local transport and then individual activities. Keep some flexibility for weather, a missed reservation window or a trail closure. A full schedule is less useful than a realistic one with room for the extra time needed to move between the island and peninsula.

For each travel day, write down where you will stop before entering the park area, where the RV will remain during sightseeing and where you can turn or wait if an entrance is temporarily closed. Do not rely on finding overnight space in a scenic pullout. NPS states that there is no backcountry camping, out-of-bounds camping, overnight parking or winter camping anywhere in Acadia.

For a longer stay without hookups, plan water use and waste servicing around the dump station and water available at your campground. Read the generator restrictions for your specific loop before you book; at Blackwoods and Seawall most loops allow no generator use at all, and quiet hours run from 10 at night to 6 in the morning. If your daily power and water needs do not fit what the site offers, compare private campgrounds in surrounding towns and confirm their exact sites directly.

Our RV sizing guide can help you think through living-space priorities, but a destination's actual access and site limits take precedence over a general size recommendation.

Before a trip that includes tight mountain roads and a multi-day drive to reach the coast, a pre-trip check at your local Jayco dealer covers the details that matter most on unfamiliar roads: brake and tire condition, weight distribution if you're towing and a look at anything that's been due for service. Find your local dealer to get the rig road-ready before you go.

Frequently Asked Questions

Can I book an Acadia campsite by calling the park? No. All Blackwoods, Seawall and Schoodic Woods reservations go through Recreation.gov only; the campground offices can't make or hold reservations, even for a same-day site.

Which Acadia campground has hookups? Schoodic Woods is the only one. Every site there except the group and hike-in sites has electric service, and B-Loop sites add water. No Acadia campground has a sewer hookup, though all three have a dump station. Check the specific site's equipment limits and amenities on the current reservation listing before you book.

Do I need a separate reservation to drive to the top of Cadillac Mountain? An eligible vehicle needs a separate $6 vehicle reservation during the reservation season. RVs and trailers cannot use the road even with a reservation, and neither can any vehicle over 21 feet including racks and hitch attachments. Check the NPS rules for the vehicle you intend to use.

What's the tallest RV I can safely bring onto Park Loop Road? There is no single height that clears the whole loop. The shortest underpass on Park Loop Road is 11 feet 8 inches, the Sieur de Monts to Sand Beach segment is closed above 12 feet 2 inches, the Fabbri to Wildwood Stables segment above 12 feet, Fish House Road above 11 feet 6 inches and Stanley Brook Road above 10 feet 4 inches. Some areas prohibit RVs regardless of height. Confirm your exact route against current NPS guidance instead of treating one clearance number as park-wide permission.