RV Dimensions: Length, Width, and Height Explained

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How long is the average RV?” Whether you’re choosing RV storage, backing your RV into a parking stall or driveway, or trying to squeak your RV into your standard-sized garage, this question is bound to come up.

Understanding average RV lengths, widths, and heights will help you secure the safest parking/storage option for your investment.

Outside of parking, the length of an RV will also dictate the turning radius, the type of towing vehicle needed, the travel speeds an RV can reach, and the RV’s maneuverability. When shopping for an RV, it’s important to remember that the longer an RV is, the more difficult it [generally] is to maneuver.

Because an RV is no small purchase, you’ll need to evaluate an RV down to the last inch of its rear overhang. Don’t overlook the importance of an RV’s dimensions. While a few extra feet may seem inconsequential, in the context of an RV, a 24-foot-long RV may render a completely different driving experience than a 20-foot-long RV.

If you don’t want to bust out a tape measure every time you visit an RV dealership or RV show, turn to us: your guide in all things in average RV dimensions. From model-specific measurements to state and national regulations, we have all the information you’re looking for.

Understanding RV Dimensions: Length, Width, and Height

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Whether you’re shopping for an RV or just recently purchased one, length, width, and height are the three main dimensions that affect both the amount of usable living space to an RV’s maneuverability on narrow roads.

It is important to differentiate between the exterior and interior dimensions of an RV. The exterior dimensions, including the maximum RV width, can be greater than the interior dimensions due to the thickness of the walls and external add-ons such as slide-outs. 


Pro tip: While motorhomes are measured using the full length of the unit, travel trailers and fifth wheels are measured by excluding the hitch and towing vehicle.

RV Lengths By Class 

When planning your travels, it’s essential to know the average RV lengths to maneuver and park with ease. Again, more length often translates to lower maneuverability.


The average width of RVs is 8’6”, with a fifth-wheel RVs measuring between 8-10 feet in width. However, the addition of slide-outs can increase the width of an RV to up to 14’6”.

The width of your RV impacts its ability to navigate narrow roads and fit into parking spaces. Note that the imposed legal limits for RV width differ by state. For example, the maximum width permitted for RVs on designated roads is 8 feet 6 inches, while in Hawaii, the legal width limit for RVs is 9 feet. 

Average RV lengths and widths are important factors to consider when planning your adventures, especially when visiting places like Yellowstone National Park, which enforces a maximum RV width limit of 8 feet 6 inches on designated roads.

When driving down side streets with wider RVs, be cautious of knocking out side-view mirrors or extending over parking spaces at stops like Cracker Barrel.


A fifth wheel typically measures in at an approximate height of 9 feet, while a Class B motorhome, such as the Winnebago Revel, stands between 7-9 feet tall.

You’ll need to account for the height of your RV when driving and parking in various locations, as height determines overhead clearance and other potential obstacles.

When driving an RV, it’s important to be mindful of low bridges and trees, as well as potential man-made obstacles that may not be displayed on an app. Knowing your RV’s height will help you avoid unnecessary headaches (like RV roof scrapes)

Motorhome Dimensions: Class A, B, and C

Motorhomes come in three main classes: Class A, B, and C, each offering different dimensions and features to suit various travel needs and preferences. Class A motorhomes are built on a bus or heavy-duty truck frame, Class B motorhomes are modified vans, and Class C motorhomes are constructed on a truck or van frame with an attached cab section.

These different classes cater to a wide range of RVers, from solo adventurers to large families, and are supported by the RV industry association.

Class A Motorhomes

Class A motorhomes are the largest and longest of the three classes, providing generous living space and a wide selection of features. However, their size can make them difficult to drive and park. On average, Class A motorhomes measure 33 feet in length, with some models, such as the Entegra Cornerstone 45B, reaching up to 45 feet.

Selecting the right length for a Class A motorhome depends on factors such as passenger capacity and sleeping arrangements. A 40-foot rig may offer more cozy comforts for larger families and retired couples, while shorter Class A motorhomes provide a wider range of campsites to choose from across the United States.

Class B Motorhomes

Class B motorhomes, also known as camper vans, are the smallest and most compact type of recreational vehicle available. Their convenient size and easy maneuverability make them a popular choice for weekend getaways and city exploration.

However, their limited living space means they may not be suitable for full-time RVers or larger families. The interior of a Class B motorhome still offers ample space, providing the capacity of a medium-sized room.

Class C Motorhomes

Class C motorhomes provide a great balance between Class A and B models, offering a spacious interior without excessive size and weight. These motorhomes typically feature a cabover section with a bed, making them well-suited for families of four. 

The typical length of a Class C motorhome is approximately 28 feet, with a width of 8 feet, providing more space for passengers and storage. Some models, like the Freelander 31MB, can even reach up to 32 feet in length, 10.8 feet in height, and 8.5 feet in width. This makes Class C motorhomes a versatile choice for a wide range of RV enthusiasts.

Towable RV Dimensions: Travel Trailers and Fifth Wheels

Towable RVs, which include travel trailers and fifth wheels, offer their own unique dimensions and towing requirements, allowing for even more customization and flexibility when choosing your perfect RV for RV owners.

Travel trailers are versatile and can be towed by most family vehicles, while fifth wheels are larger and require a pickup truck for towing.

Travel Trailers

Travel trailers come in a variety of sizes, from small teardrop trailers to more spacious models, making them a popular choice for many RVers. Travel trailers are relatively large, with lengths averaging at around 20 feet and widths averaging at 8 feet.

Some models, like the Airstream Bambi travel trailer, are even shorter, with a length of just 16 feet.

Travel trailers can be towed by most family vehicles, making them a versatile and convenient option for weekend getaways and longer trips alike. 

Fifth Wheels

Fifth wheels are larger towable RVs that require a pickup truck for towing and offer more living space compared to travel trailers. They generally range up to a maximum of 40 feet in length and offer a better turning radius than travel trailers, making them easier to control and maneuver.

Towing a fifth wheel does come with some challenges, particularly when navigating side streets or narrower roads. However, their increased size and stability make them an attractive option for those seeking more space and comfort in a towable RV.

RV Dimension Regulations: State and National Parks

State Park Regulations

State park regulations may impose specific length, width, and height limits for RVs, with these limits varying based on the park in question. Some parks require special permits for oversized vehicles, so it’s essential to research the regulations of each state park you plan to visit. 

Keep in mind that larger RVs may have a harder time finding suitable parking spaces, not only in state parks but also in urban areas and other popular destinations. 

National Park Restrictions

National park restrictions often have length limits for RVs, with some parks not accommodating larger RVs at all or having limited availability of larger sites. On average, most national park campground sites can accommodate RVs between 25 and 40 feet in length, though some parks may have different length restrictions ranging from 19 feet to 42 feet.

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Measuring Your RV: Tips and Techniques

Measuring your RV accurately is essential for complying with regulations and ensuring a proper fit in parking spaces and garages. To measure the length of your RV, start at the front bumper and measure to the rear bumper. For the height, measure from the ground to the highest point on the RV.

Don’t forget to take into account any accessories or add-ons that may affect the overall dimensions of your RV, such as rooftop air conditioning units, bike racks, or satellite dishes. 

RV Storage Considerations: Garages and Parking Spots

When it comes to storing your RV, the size of available garages and parking spots is an important consideration. Larger RVs require more space and may necessitate specialized off-site storage rentals from a traditional facility or a more cost-conservative peer-to-peer marketplace.

Smaller RVs, such as Class B motorhomes, may fit into a standard garage or parking space with ease. However, when storing a Class A motorhome, you’ll need a garage with a minimum height of 14 feet. If your garage measures under that 14-foot target, consider renting an off-site storage space.

Knowing your RV’s dimensions and storage requirements can help you make informed decisions when choosing a home base for your home on wheels.

RV Slide-Outs and Add-Ons: Impact on Length & Width

Customizing your RV with slide-outs and add-ons can greatly increase your living space and overall comfort while on the road. Slide-outs are additional sections that can be extended outward to provide more space, while add-ons can include items such as bike racks, satellite dishes, or rooftop air conditioning units.

However, it’s important to remember that slide-outs and add-ons may also affect the overall dimensions and maneuverability of your RV.

Before customizing your RV, consider the impact on the width, height, and length, as well as any potential challenges in navigating narrow roads or tight parking spaces.


After learning all about RV dimensions, you’ll want to ask yourself some other questions before getting an RV, including the following: “Where should I store my RV when I’m not using it?” and “What are the maintenance requirements of an RV?”

Luckily, learning about the different types of RVs and their dimensions is already a step in the right direction. 

Frequently Asked Questions

What are the dimensions of an RV?

Most RVs are between 96′′ and 102′′ wide, allowing them to fit in standard driving lanes with room on each side. Lengths vary, but they are usually 8 to 10 feet wide.

What is the length of a normal RV?

RVs come in a range of lengths, typically ranging from 12-15 feet on the small end and up to 45 feet on the large end.

Class. A motorhome can reach up to 45 feet, Class C can reach up to 28 feet, and Fifth Wheels can reach up to 38 feet.

Is a 30 ft RV too long?

Given that only half of all national parks have space for RVs over 37 feet in length and just over 70% will accommodate an RV up to 35 feet, a 30-foot RV may be too long for many campsites.

What is the difference between a motorhome and a travel trailer/5th wheel in terms of length measurement?

Motorhomes are measured from end-to-end, while travel trailers/5th wheels only include the length of the unit itself, excluding the hitch and towing vehicle.

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