RV size limits at major national parks

Zion National Park

Utah

Most RVs and trailers can no longer use the Zion–Mt. Carmel Highway

• Since June 7, 2026, vehicles over any of these limits may not drive the Zion–Mt. Carmel Highway between Canyon Junction and the East Entrance: 35′ 9″ long, 7′ 10″ wide, 11′ 4″ tall or 50,000 lb.
• Truck-and-trailer combinations are limited to 50′ overall, with the trailer no longer than 26′ from hitch to rear axle.
• Measurements include mirrors, tires, A/C units, bike racks, satellite dishes and other attachments. That width limit rules out most RVs: in RV Sort’s 2027 catalog, every Class A, nearly every fifth wheel and about 80% of travel trailers and Class C motorhomes are already 7′ 10″ or wider before mirrors. Most Class B camper vans are narrower.
• Oversize vehicles entering from the South Entrance can still use the large-vehicle lot at the Zion Canyon Visitor Center (when space is available), stay at Watchman or South Campground, visit Zion Lodge with a reservation, or drive the Scenic Drive when the shuttle isn’t running.
• The park says alternate routes to Bryce Canyon and the North Rim of the Grand Canyon add 10 to 45 minutes.

Shopping for this park? Browse RVs 35 ft and under.

Official sources: Zion: Large Vehicles · Zion news release, Jan. 5, 2026

Glacier National Park

Montana

Going-to-the-Sun Road: 21 feet long and 8 feet wide, maximum

• Between Avalanche Creek and Rising Sun, vehicles and vehicle combinations longer than 21′ (including bumpers) or wider than 8′ (including mirrors) are prohibited.
• Vehicles over 10′ tall may have difficulty driving west from Logan Pass to the Loop because of rock overhangs.
• Larger RVs can still reach both ends of the road (Avalanche Creek from the west, Rising Sun from the east). A truck towing even a small trailer will usually exceed 21′ combined.

Shopping for this park? Browse RVs 21 ft and under.

Official source: Glacier: Going-to-the-Sun Road General Info

Yellowstone National Park

Wyoming, Montana & Idaho

Campground limits range from 25 to 95 feet; only Fishing Bridge has hookups

• Maximum combined RV and vehicle length by campground (2026): Fishing Bridge RV Park 95′ (the park’s only campground with hookups), Bridge Bay 60′, Madison 60′, Grant Village 50′, Mammoth 45′ (30′ from mid-October through April), Canyon 40′, Indian Creek 35′, Slough Creek 30′, Tower Fall 30′ and Lewis Lake 25′.
• Pebble Creek Campground is closed until further notice for flood recovery.
• Fishing Bridge, Bridge Bay, Canyon, Grant Village and Madison are reserved through Yellowstone National Park Lodges; the others through Recreation.gov.
• The park lists Tower Fall’s limit as tied to a hairpin curve and advises assessing Slough Creek before pulling in.

Official source: Yellowstone: Campgrounds

Grand Teton National Park

Wyoming

No trailers or vehicles over 23 feet on Moose-Wilson Road or Signal Mountain

• Moose-Wilson Road is closed to vehicles more than 23′ long or 8′ wide, and to any vehicle towing a trailer or another vehicle, whatever its size. (Horse trailers have a limited exception near the Granite Canyon and Death Canyon trailheads.)
• The same size and towing limits apply on Signal Mountain Summit Road and Two Oceans Road, and on Murie Ranch Road.

Shopping for this park? Browse RVs 23 ft and under.

Official sources: Grand Teton: Superintendent’s Compendium · Grand Teton: Moose-Wilson Road

Yosemite National Park

California

Road limits from 21 to 60 feet; campground limits up to 40 feet

• Road length limits: El Portal Road 45′ single vehicle, 60′ combination and 35′ for the towed unit (hitch to rear bumper); Wawona Road and Big Oak Flat Road 45′ single vehicle.
• Glacier Point Road: beyond the Sentinel Dome/Taft Point trailhead, 30′ single vehicles only and no trailers.
• Mariposa Grove Road: 21′ and no trailers. Hetch Hetchy Road: 25′ long and 8′ wide (mirror to mirror). Tioga Road has no posted length limit.
• Campground maximums (RV / trailer): Lower Pines and North Pines 40′ / 35′; Wawona and Crane Flat 35′ / 35′; Hodgdon Meadow 35′ / 30′; Upper Pines, Tuolumne Meadows and Bridalveil Creek 35′ / 24′; White Wolf 27′ / 24′; Porcupine Flat 24′ (4 sites). Camp 4 and Tamarack Flat don’t allow RVs or trailers.
• From April through October you need a campground reservation to stay overnight, and sleeping in an RV outside a campground isn’t allowed.

Shopping for this park? Browse RVs 35 ft and under.

Official sources: Yosemite: Vehicle Restrictions · Yosemite: Campgrounds · Yosemite: Visiting With an RV

Grand Canyon National Park (South Rim)

Arizona

RVs over 22 feet use designated lots; Hermit Road is shuttle-only most of the year

• The park treats RVs over 22′, and vehicle-and-trailer combinations over 22′ total, as oversized.
• Oversized vehicles may park in Lot 1 (Visitor Center, usually full by 10 a.m.), Lot B (Market Plaza, RVs 30′ and under, usually full by noon) or Lot D (Backcountry Information Center). Don’t park in Lots 2, 3, 4, A or C. The park suggests arriving before 9:30 a.m.
• Hermit Road is open only to the free shuttle from March 1 to November 30; December through February, private vehicles under 22′ may drive it.
• Mather Campground and Desert View Campground have no hookups. Trailer Village RV Park, the full-hookup park, is listed by the park as closed due to a water shortage; check before you plan around it.

Shopping for this park? Browse RVs 30 ft and under.

Official sources: Grand Canyon: Visiting the South Rim in an RV · Grand Canyon: Camping

Great Smoky Mountains National Park

Tennessee & North Carolina

RVs and trailers are banned on several scenic roads, and every parked vehicle needs a tag

• Trailers, RVs and buses are prohibited on Roaring Fork Motor Nature Trail, Rich Mountain Road, Balsam Mountain Road, Heintooga Ridge Road, Greenbrier Road past the ranger station and the Metcalf Bottoms exit road. The park advises caution on Little River Road and the road into Cataloochee Valley.
• A parking tag is required for any vehicle parked longer than 15 minutes anywhere in the park: $5 daily, $15 weekly or $40 annual, the same for every vehicle size.
• Only some sites at Look Rock Campground have electric and water hookups. Generator quiet hours are 8 p.m. to 8 a.m.

Official sources: Great Smoky Mountains: Traffic & Travel Tips · Great Smoky Mountains: Roaring Fork Motor Nature Trail · Great Smoky Mountains: Parking tags · Great Smoky Mountains: Frontcountry Camping

Rocky Mountain National Park

Colorado

Old Fall River Road: no trailers and nothing over 25 feet

• On Old Fall River Road, vehicles longer than 25′ and vehicles with trailers are prohibited.
• The park’s rules also set size limits for Bear Lake Road, and Trail Ridge Road climbs above 12,000 feet; check road status and current rules before you go.
• Summer camping at Moraine Park, Glacier Basin, Aspenglen and Timber Creek requires reservations, which open six months ahead on Recreation.gov.

Shopping for this park? Browse RVs 25 ft and under.

Official sources: Rocky Mountain: Old Fall River Road · Rocky Mountain: Campgrounds

Sequoia & Kings Canyon National Parks

California

Vehicles over 22 feet are advised against the steep Generals Highway climb

• Generals Highway: vehicles longer than 24′ are not advised between the Foothills Visitor Center and Potwisha Campground; longer than 22′ is not advised between Potwisha and the Giant Forest Museum, where single vehicles over 40′ are prohibited. The park recommends the Big Stump entrance (Highway 180) for longer vehicles.
• Moro Rock / Crescent Meadow Road: single vehicles over 22′ and anything towing are prohibited. Crystal Cave Road: vehicles over 22′ are prohibited.
• Mineral King Road: single vehicles over 40′ are prohibited, and RVs and trailers aren’t allowed in the Mineral King campgrounds. Panoramic Point Road (Kings Canyon) is closed to RVs and trailers.

Shopping for this park? Browse RVs 22 ft and under.

Official source: Sequoia & Kings Canyon: Visiting With an Oversized Vehicle

Acadia National Park

Maine

Low bridges on Park Loop Road, and no RVs on Cadillac Summit Road

• Cadillac Summit Road is closed to RVs and trailers.
• The shortest underpass on Park Loop Road is 11′ 8″. The road is closed to vehicles over 12′ 2″ from Sieur de Monts to the Sand Beach Entrance Station and over 12′ from Fabbri Picnic Area to Wildwood Stables. Stanley Brook Road is closed to vehicles over 10′ 4″ and Fish House Road to vehicles over 11′ 6″.
• Vehicles larger than 15-passenger vans are restricted from the Sand Beach parking lots, the Bubble Pond lot and the Jordan Pond south lot.

Official source: Acadia: Oversized Vehicles

Bryce Canyon National Park

Utah

Vehicles 23 feet and longer can’t park at the main viewpoints during shuttle season

• During shuttle season (typically mid-April to mid-October, 8 a.m. to 8 p.m., or until 6 p.m. in April and October), vehicles 23′ and longer can’t park at the Visitor Center, Sunrise Point, Bryce Lodge (unless you’re staying there), Sunset Point, Inspiration Point or Bryce Point. Paria View is restricted all year.
• Longer vehicles can park at the Shuttle Station in Bryce Canyon City (then ride the free shuttle), the additional Visitor Center lot, your campsite, and every viewpoint on the Southern Scenic Drive from Swamp Canyon to Rainbow Point.
• North Campground takes reservations up to six months ahead; Sunset Campground up to 14 days ahead.

Shopping for this park? Browse RVs 22 ft and under.

Official sources: Bryce Canyon: Oversized Vehicle Restrictions · Bryce Canyon: Campgrounds

Arches National Park

Utah

Very few oversize parking spaces; no timed-entry reservations in 2026

• Oversize parking is extremely limited: 10 spaces at Devils Garden, 4 at the Windows (lower lot near Double Arch) and 28 at Wolfe Ranch for Delicate Arch (across the street from the main lot).
• The park suggests leaving oversize vehicles in town or in the visitor center parking lot.
• Arches did not require timed-entry reservations in 2026. Devils Garden Campground needs reservations for nights from March 1 to October 31.

Official sources: Arches: Parking · Arches news release, Feb. 18, 2026 · Arches: Camping

Death Valley National Park

California & Nevada

Artists Drive is limited to 25 feet

• Artists Drive is one-way with a 25′ vehicle length limit because of dips and sharp turns.

Shopping for this park? Browse RVs 25 ft and under.

Official source: Death Valley: Tour Artists Drive

Shenandoah National Park

Virginia

Skyline Drive welcomes RVs; check your height for Marys Rock Tunnel

• Marys Rock Tunnel (mile 32.2) has a maximum clearance of 12′ 8″.
• RVs, camping trailers and horse trailers are welcome on Skyline Drive; the park advises shifting into a lower gear on descents. The speed limit is 35 mph in most places.

Official source: Shenandoah: Driving Skyline Drive