Most national parks accommodate RVs up to 30 feet in length, with 84% of park campgrounds accepting rigs up to 29 feet and 73% allowing RVs up to 35 feet. The safest RV size for maximum park access is 25 feet or less, which fits in 93% of national park campgrounds, while RVs that are 40 feet or longer can only access 53% of parks. They also face combined-length restrictions, road width limitations, and tight turn radiuses. Popular parks like Yosemite, Yellowstone, and Grand Canyon offer campgrounds for RVs up to 40-50 feet, but require advance reservations made 6-12 months ahead, as long sites are extremely limited and fill quickly during peak season.
National Park RV Access by Length
| RV Length | % of Parks Accessible | Best For | Limitations |
| Up to 19 feet | 98% | Class B vans, small trailers | Almost universal access |
| 20-25 feet | 93% | Class C, mid-size trailers | Excellent park access |
| 26-29 feet | 84% | Large Class C, travel trailers | Good access, some restrictions |
| 30-35 feet | 73% | Class A, fifth wheels | Moderate restrictions |
| 36-40 feet | 53% | Large motorhomes, big fifth wheels | Significant restrictions |
| 41+ feet | 7% | Luxury Class A | Very limited access |
Parks With No Length Limits
A few national park campgrounds have no limit on the length of an RV:
- Death Valley National Park: Sunset and Stovepipe Wells Campgrounds have very large sites
- Sequoia National Park: Dorst Creek has large sites, but limited road access
- Badlands National Park: Cedar Pass Campground has wide open spaces
- Great Smoky Mountains National Park: Look Rock Campground has large sites, but there is a limited quantity
- Bryce Canyon National Park: Pines Campground has a few unrestricted sites
Why National Park RV Length Limits Matter
Understanding the length restrictions at national parks can prevent costly mistakes and disappointment during a road trip. Your reservation – made months in advance – could be denied if you don’t fit the size restrictions at the campground. You may also have challenges even getting to the campsite in the first place. Some length restrictions aren’t because of space at the campsite, they’re because of the narrow roads to get there. You could also damage your RV due to tight turns, steep grades, or low-handing branches. Once you’re at the campsite, an oversized RV could encroach on roads or neighboring sites. You may also not be able to deploy your slide-outs, making camping a challenge.
National Park RV Length Limits By State
Need more details? Below is a list of national parks, the campgrounds within each park, and the national park RV size limit that applies to that particular park. While this doesn’t include every NPS site in the country, it does include the most popular ones and will give you an idea of what you might expect while visiting state and national parks in an RV.
Note: RV length limits below marked with “COMBINED” are referring to the length of a trailer plus the length of its tow vehicle, or a motorhome plus the car it’s pulling, etc.
Western States (Most Popular Parks)
Alaska:
- Denali: 40 feet max (Riley Creek, Savage, Teklanika campgrounds)
Arizona:
- Grand Canyon: 30-50 feet (Mather: 30 feet, Trailer Village: 50 feet)
California:
- Yosemite: 24-40 feet (varies by campground, motorhomes larger than trailers)
- Sequoia: 24-42 feet (Lodgepole: 42 feet, but road limits 22 feet)
- Death Valley: No limit at main campgrounds (Sunset, Stovepipe Wells)
- Joshua Tree: 25-35 feet COMBINED (includes tow vehicle)
- Redwood: 24-36 feet (Gold Bluffs: motorhomes only, no trailers)
Colorado:
- Rocky Mountain: 30-40 feet (Moraine Park: 40 feet, others: 30-35 feet)
Utah:
- Zion: 19 feet max (highly restrictive)
- Arches: 40-50 feet (Devils Garden: 40 feet, Archview: 50 feet)
- Bryce Canyon: 40 feet (North Campground), no limit (Pines)
Wyoming:
- Yellowstone: 40 feet COMBINED at most campgrounds
- Grand Teton: 20-45 feet (Colter Bay RV Park: no limit, Lizard Creek: trailers 20 feet)
Eastern States
Florida:
- Everglades: 45 feet (Flamingo Campground)
Maine:
- Acadia: 35 feet COMBINED (includes tow vehicle, slides must fit within site)
Tennessee:
- Great Smoky Mountains: 12-40 feet (Abrams Creek: 12 feet min, Cades Cove/Smokemont: 35-40 feet)
South Dakota:
- Badlands: No limit (Cedar Pass has very large sites)
Things to Consider When Booking National Park Campsites
When it comes to booking a site in a state or national park, there are several factors to consider that will determine what kind of rig you bring.
Rules to check for include the following:
Combined Length
In some cases, a state or national park RV size limit is a combined limit. This means the trailer and tow vehicle must both fit into the length limit. Driving a motorhome? Your tow car must also fit into those RV length limits when hitched up.
Slides
There are a few state and national park campgrounds that are on the narrower side. Since your slides must always stay within your own site, it’s a good idea to confirm that the width of your RV with slides extended will fit into a site before booking it.
Acadia National Park specifically mentions that slides must fit into the RV space.
Road Length Limits
It’s also important to note that some roads in some parks will have vehicle length limits. Even if there’s room at the campground for you, your rig needs to be able to get there.
At Sequoia National Park, RVs up to 42 feet in length can stay at the Lodgepole Campground, but many roads don’t allow vehicles longer than 22 feet in length. Obviously, it is possible to get to the campground without driving on roads with lower length limits, but you will want to leave your RV in the campground for the duration of your stay, exploring with a car or truck instead of the whole rig.
Motorhomes Only
In some campgrounds, motorhomes are allowed, but trailers of any size are prohibited. Gold Bluffs in Redwoods National Park is an example of this.
Other times, the limit for motorhome length might be different from the limit for trailer length. For instance, Yosemite National Park allows motorhomes up to 40 feet long, while trailers can only be 35 feet max.
Long Site Upcharge
In some instances, you’ll find that while long sites are available, there is an upcharge to use them. For some travelers, this upcharge is money well spent as it means they can take their larger, more comfortable motorhome or trailer into the park. That said, if you wish to avoid extra site fees, sticking to a smaller rig is your best bet.
Some of the national parks that charge an extra few bucks for longer sites include Arches and Denali.
Seeing National Parks and State Parks in a Large RV
Want to go longer but still see the national parks? No worries! Go ahead and get your larger motorhome or trailer. In some cases, you’ll still be able to camp in the national and state parks you choose to visit. When you can’t, simply plan to camp just outside the park.
In many cases, free boondocking with no RV length limits is available on the land near national parks, especially in Western states. Privately owned campgrounds are almost always available near natural attractions as well.
Key Takeaways
- Most national parks accommodate RVs up to 30 feet, with some allowing rigs up to 50 feet but requiring advance reservations.
- RVs shorter than 25 feet provide the best access, fitting into 93% of campgrounds, while those over 40 feet only access 53%.
- Parks like Death Valley and Badlands have no RV length limits, while others enforce restrictions due to road conditions and campsite size.
- Understanding national park RV length limits is crucial to avoid denied reservations and potential damage to your vehicle.
- Check each park’s website for specific length restrictions, especially if combining a trailer and tow vehicle.
FAQs About National Park Length Limits
Generally speaking, most national parks can accommodate RVs up to 30 feet in length, though there are some exceptions. Some parks can also accommodate larger RVs (up to 50 feet in length) while ALL RV-accessible national parks can accommodate rigs up to 12 feet long. It’s important to check with the specific national park you’re traveling to in order to understand the maximum RV length ahead of time.
When national parks have RV length limits, it’s often because the campsites they offer simply aren’t built for bigger rigs. In some cases, it can also be due to the rugged nature of the roads to the campground, which may be difficult or impossible for larger RVs to get through (or, importantly, turn around on).
Denali, Grand Canyon, Death Valley, Sequoia, Yosemite, Rocky Mountain, Everglades, Badlands, Great Smoky Mountains, Arches, Bryce Canyon, Grand Teton and Yellowstone National Parks can all accommodate RVs over 35 feet in at least one of their on-site campgrounds. However, spaces fill fast and not all campgrounds can accommodate large RVs, so be sure to book early.
Yes, the campgrounds inside national parks are managed by the National Park Service (NPS) and in many cases are more rugged and rustic than private RV campgrounds around the outside of the park. Private campgrounds tend to have more luxurious amenities, but also to come at higher per-night prices. Just like the sites inside the park, they often book up well in advance.
If you’re traveling to a national park, check the park’s official NPS website to learn about the RV length limits and restrictions in each campground. The same can be said for private RV parks, though most contemporary parks are built to handle RVs up to 45 feet or more in length.
If you’re planning your own national park RV adventure, check out RV rentals at RVshare. You can find 25-foot Class C motorhomes perfect for accessing 93% of national park campgrounds without length restrictions. Be sure to reserve early for summer travel—national park trips book 6-12 months ahead.
