RV travel in Maryland
Maryland gives you more variety per square mile than almost anywhere on the Eastern Seaboard. The Atlantic at Assateague with its famous wild horses, the Chesapeake Bay with crab shacks and watermen's wharves, the C&O Canal towpath running 184 miles from Washington DC to Cumberland, and the Allegheny ridges at Deep Creek Lake all sit inside three hours' drive of each other. The state-park system is RV-friendly and underrated. The two big RV gotchas are the Chesapeake Bay Bridge (US-50 east, prone to crosswind closures for high-profile vehicles) and the dense, expensive I-95 / I-495 corridor between Baltimore and Washington where transient overnight camping is essentially impossible. Plan the coastal and western legs around those constraints and Maryland is a strong stop.
Last verified: 14 May 2026
Free RV PDF guide to Maryland
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 + RVs)70 mph (most rural segments)
Interstate (towing/trailers)70 mph (matches posted)
US/State highway55-65 mph (posted)
Bay Bridge (US-50/301 over Chesapeake)50 mph (high-wind restrictions for high-profile vehicles, see callout)
Built-up areas25-35 mph (posted)
Drive onRight
SeatbeltsRequired for all occupants in all seats
Cell phone use while drivingHands-free only (banned hand-held statewide)
RV-friendly and RV-restricted highways
RV-friendly
I-95Northeast corridor through Baltimore. Toll at Fort McHenry Tunnel and JFK Memorial Highway -- E-ZPass strongly recommended. Heavy traffic 6-9am and 3-7pm; plan around it.
I-70Frederick to the Pennsylvania line via Hagerstown. Easy big-rig route west out of the Baltimore-DC area.
I-68Hancock to West Virginia line via Cumberland (the National Freeway). Crosses the Allegheny ridges with sustained 6% grades on Sideling Hill and Big Savage Mountain -- lower gears descending, watch coolant climbing.
I-83Baltimore to the Pennsylvania line. Easy big-rig route.
I-97Baltimore to Annapolis. Short, easy, gets you to the Bay Bridge approach.
I-495 / I-695 (Capital and Baltimore Beltways)Necessary evil for through-traffic; both beltways are heavy commuter routes 6-9am and 3-7pm. Big rigs OK off-peak.
US-50Annapolis across the Chesapeake Bay Bridge to Ocean City. The main RV route to Assateague and the Eastern Shore. Bay Bridge crosswind closures common Oct-Mar -- see callout.
US-301Eastern Shore alternate north-south. Quieter than I-95, easy big-rig route to Delaware and points north.
I-81 (panhandle)Brief Maryland segment near Hagerstown. Heavy truck traffic, easy.
RV-restricted
Chesapeake Bay Bridge (US-50 eastbound)50 mph posted, closes or restricts high-profile vehicles when sustained winds exceed 40 mph or gusts exceed 55 mph. Check the bridge wind status on the Maryland Transportation Authority site before crossing -- failed crossings have happened.
US-50 through downtown Ocean CityTight beach grid south of the inlet. Park at the Convention Center or Inlet lot and walk; do not take a Class A south of 17th Street in summer.
MD-77 through Catoctin Mountain ParkTwisty mountain road; tight switchbacks. Rigs over 30 ft should approach Catoctin from US-15 / MD-550 instead.
Skyline Drive of MD (Bald Knob / Garrett ridge roads)Narrow, unfenced ridge roads through Garrett County. Not for towables or Class A. Use I-68 / US-219 / US-40 alternates.
C&O Canal towpathHiking and biking only; RVs prohibited (no surprise).
National parks and monuments
Assateague Island National Seashore (MD district)$25/vehicle (7 days), $80 America the Beautiful annual. Bayside, Oceanside North, and Oceanside South campgrounds reservable Mar-Nov via recreation.gov; first-come Dec-Feb. Rigs to 35 ft on most loops. The Maryland district shares the barrier island with Assateague State Park (separate booking via Maryland State Parks; full hookups, often easier to get). Famous wild horses roam camp -- secure food and water; do not feed them, fines + tickets enforced.
Catoctin Mountain Park (NPS)Free entry. Owens Creek Campground reservable Apr-Nov via recreation.gov; rigs to 25 ft only (steep, twisty access). Camp Misty Mount cabins also available. Note: Cunningham Falls SP next door takes bigger rigs.
Antietam National Battlefield$10/vehicle (3 days). No camping inside the battlefield. Stay at Greenbrier State Park or commercial parks in Hagerstown.
Harpers Ferry NHP (MD side)$20/vehicle (3 days). The historic town is in West Virginia; the Maryland Heights ridge is the spectacular view. No camping in the park. Stay across the river in WV at Harpers Ferry KOA or in MD at the C&O Canal Brunswick area.
C&O Canal NHPFree entry (most areas). Hiker-biker campgrounds along the 184-mile towpath are walk/bike-in only; no RV camping. Use the parallel commercial and state-park camping along US-340 and I-70.
Fort McHenry NM and Historic Shrine$15/adult. Day-use only; no camping. The Star-Spangled Banner birthplace, in Baltimore Harbor.
Chesapeake & Ohio Canal NHP -- visitor centersFree entry. Multiple visitor centers Cumberland to DC; day-use only.
Hampton NHSFree entry. Day-use only, near Towson.
Boondocking and dispersed camping
BLM: Maryland has no BLM land. Federal-land dispersed camping is not a Maryland option. Practical workarounds: Cracker Barrel and Walmart overnight outside the Baltimore-DC corridor (overnight refusals are common inside the Beltway), Harvest Hosts and Boondockers Welcome hosts in western Maryland and on the Eastern Shore, and the Maryland State Forest system (see NF note).
National Forests: No National Forests in Maryland. The closest dispersed NF camping is George Washington NF in Virginia or Monongahela NF in West Virginia. Maryland State Forests (Savage River, Green Ridge, Potomac, Pocomoke, Garrett) offer primitive permit-only camping -- backcountry-style, designated sites, no hookups, $10/night via mdstateforests.reserveamerica.com. Green Ridge SF (Cumberland area) has 100+ designated primitive sites along forest roads; the best informal-feel boondocking in Maryland.
Stay limit: typically 14 days per location.
Service stops
Propane: Plentiful in the Baltimore-Washington corridor and along I-70/I-95. Tractor Supply and U-Haul in every county seat. Most KOA, Sun, and Good Sam parks fill on-site. Thin out in deep Garrett County (Deep Creek Lake) -- top up in Cumberland or LaVale before heading to the lake.
Dump stations: Adequate state-wide. Maryland State Parks with RV camping have free dump stations for registered guests (Elk Neck, Cunningham Falls, Greenbrier, Pocomoke River, Assateague SP, Janes Island, Point Lookout, New Germany, Deep Creek Lake). Flying J / Pilot stations along I-95 and I-70 charge $10-15 for non-guest dumps. Commercial parks on the Eastern Shore (Sun Outdoors Frontier Town, Castaways) accept non-guest dumps in season.
Fuel: Diesel and gas widely available statewide. No significant fuel gaps. Maryland fuel taxes are mid-pack on the East Coast -- cheaper than Pennsylvania, more expensive than Virginia or Delaware. The Baltimore Beltway (I-695) and Capital Beltway (I-495) have stop-and-go that wrecks mileage; plan fuel before entering at rush hour. Fuel prices typically lowest along I-95 north of Baltimore, highest near Ocean City in summer.
Weather windows
Best monthsLate April through mid-June, and mid-September through October. Daytime highs 65-80 F, humidity manageable, bugs moderate, hurricane risk low except in September.
Avoid monthsJuly and August are 90+ F with 80%+ humidity statewide; the Eastern Shore adds biting flies and mosquitoes. January-February in the mountains (Garrett County, Allegany) see heavy snow and frequent road closures on I-68 and US-219 -- not impossible for an experienced winter rig but plan around it.
Chesapeake Bay Bridge wind closures and Atlantic crosswinds: US-50 east across the Bay Bridge restricts or closes high-profile vehicles when sustained winds exceed 40 mph or gusts exceed 55 mph. Check baybridge.maryland.gov / MDTA wind status before approaching. If closed, your only Eastern Shore alternates are US-301 via the Delaware Memorial Bridge (long detour) or a 4-hour drive around the head of the bay. Plan the leg into your morning, not your afternoon, and have a fallback overnight at Sandy Point State Park on the western shore if you get turned around.
Emergency and road conditions
State patrolDial 9-1-1 for emergencies; #77 from a cell phone for Maryland State Police non-emergency