RV travel in Maine
Maine is the Northeast's RV jewel and its toughest logistical puzzle. Acadia National Park, the lighthouse coast, the Allagash, and the lobster-shack circuit are unique to this state -- but the season is short, the popular sites book out 6 months ahead, US-1 north of Brunswick narrows into two-lane tourist crawl, and most RV parks shut between mid-October and mid-May. The interior (Moosehead Lake, Baxter, Rangeley) is genuinely remote: bring extra fuel and propane. Plan Acadia reservations the day Recreation.gov opens them, treat coastal Route 1 in July-August as a 25 mph experience, and Maine pays back the patience with the best scenery on the eastern seaboard.
Last verified: 14 May 2026
Free RV PDF guide to Maine
Driving rules, RV-friendly and RV-restricted highways, NPS reservation rules, BLM and NF boondocking, propane, dump stations, weather, and emergency contacts. Save it to your phone for offline use on the road.
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Driving rules
Interstate (cars)75 mph (I-95 north of Augusta; 70 mph south)
Interstate (trucks + towing)Matches posted (no separate trailer limit)
US/State highway (cars + towing)55 mph default; 45-50 mph on most coastal Route 1
Built-up areas25-35 mph (posted; many coastal villages 25 mph)
Drive onRight
SeatbeltsRequired for all front-seat occupants and all under-18
Cell phone use while drivingHands-free only; texting prohibited statewide
RV-friendly and RV-restricted highways
RV-friendly
I-95 (Maine Turnpike south of Augusta)Toll, smooth, fast. Kittery to Augusta is the Maine Turnpike; RV tolls run $5-12 depending on axles. Best route north.
I-295Portland to Gardiner alternate that avoids the Maine Turnpike toll between Brunswick and Augusta. Slightly slower, free, scenic glimpses of Casco Bay.
US-1 south of BrunswickMostly four-lane through York and Wells. Manageable for big rigs outside peak July-August weekends.
US-2Bangor to Bethel via Newport and Rumford. Two-lane but wide shoulders; main east-west route through western mountains. Snow common Nov-Apr.
ME-9 (the Airline)Bangor to Calais (Canada border). Remote two-lane through 90 miles of forest with minimal services -- fuel up in Bangor. Wide enough for big rigs, dangerous at dusk for moose.
RV-restricted
US-1 north of Brunswick (July-August)Two-lane tourist crawl through Wiscasset, Camden, Belfast. Big rigs are legal but everyone behind you will hate you. Use I-95 to Belfast instead and rejoin Route 1 north.
ME-3 onto Mount Desert Island (peak season)Manageable but jammed July-August. Park-and-ride at Trenton or use the Island Explorer shuttle from your campground -- much easier than driving the RV into Bar Harbor.
Park Loop Road (Acadia NP)21 ft length limit on Cadillac Summit Road. Rigs over 21 ft prohibited; trailers must be dropped at lots below. Park Loop one-way sections are tight for anything over 30 ft.
ME-17 through Height of Land (Rangeley)Steep grades and tight switchbacks descending into Rangeley. Trailers over 35 ft should approach from US-2/ME-4 instead.
Most coastal lighthouse access roadsPemaquid, Owls Head, Marshall Point all have tight final approaches. Park at the visitor lot in your tow car or unhitch.
National parks and monuments
Acadia NP$35/vehicle (7 days); $80 America the Beautiful annual. Vehicle reservation required for Cadillac Summit Road sunrise + sunset slots May-Oct via recreation.gov, $6 booking fee. Blackwoods, Seawall, and Schoodic Woods campgrounds all reservable 2 months ahead. RVs limited to 35 ft at Blackwoods, 35 ft at Seawall, 35 ft at Schoodic. Park Loop has 21 ft limit on Cadillac Summit Road.
Saint Croix Island IHSFree entry. Day-use only, no camping. Small interpretive park on the New Brunswick border near Calais.
Katahdin Woods and Waters NMFree entry. Remote BLM-style monument east of Baxter SP. Dispersed primitive camping; no developed RV sites. Bring everything, including extra fuel -- nearest pump is 30+ miles in Patten or Millinocket.
Appalachian National Scenic Trail (corridor)Free. Trail crosses ME-27, ME-17, ME-4. Trailhead parking only; no RV camping on the corridor itself.
Boondocking and dispersed camping
BLM: No significant BLM land in Maine. The state is almost entirely private timberland or state-managed forest. Free dispersed camping in the legal sense exists only on commercial timber-company land (North Maine Woods, Inc. checkpoints, $14-18/night camping fee for non-residents) and on a handful of public reserved lands.
National Forests: No National Forest in Maine. The functional substitute is the North Maine Woods commercial-forest road system (Allagash, Telos, Chamberlain). Access via gated checkpoints; $10-12/day road fee plus camping fees. White Mountain NF technically clips into Maine at Evans Notch (ME-113), where free dispersed camping along forest roads is permitted in the WMNF corridor.
Stay limit: typically 14 days per location.
Service stops
Propane: Plentiful in Portland, Bangor, Augusta, and along I-95. Sparse north of Bangor and in the Allagash region -- top up in Bangor or Millinocket before heading into the interior. Most coastal RV parks fill on-site. U-Haul locations in Augusta, Bangor, and Portland are reliable for refills.
Dump stations: Reasonable coverage in southern Maine and along I-95. Most Maine State Parks with camping offer free dump stations for registered guests. Truck stops at Kittery (I-95 Mile 1), Augusta, and Howland have fee dump stations ($10-15). Sparse north of Bangor -- empty before heading to Baxter or the Allagash.
Fuel: Diesel and gas widely available along I-95, US-1 south of Bangor, and US-2. Genuinely sparse on ME-9 (the Airline -- 90 miles between Bangor and Calais with minimal services), on the road into Baxter SP from Millinocket, and throughout the Allagash region. Carry an extra 5-10 gallons for the North Maine Woods. Fuel prices typically lowest near the New Hampshire border in Kittery (no sales tax) and highest in Bar Harbor and along the coastal tourist strip.
Weather windows
Best monthsLate June through mid-October. Daytime highs 65-80 F on the coast, cooler inland. Foliage peaks late September to mid-October -- book 6-12 months ahead for that window.
Avoid monthsMid-November through mid-April. Most coastal RV parks close. Snow common; nighttime lows in the teens or single digits. Black-fly season (mid-May to mid-June) makes interior camping miserable -- bring head nets if you must be there.
Acadia's Cadillac Summit Road sunrise vehicle reservations sell out within minutes of release. Set a recreation.gov alarm for 90 days before your target date.
Emergency and road conditions
State patrolDial *MSP (*677) from a cell phone for non-emergency state police; 911 for emergencies