Class B RVs are the shortest and smallest motorhomes available today, with lengths of often 20 feet or less.
Giving them numerous advantages over larger motorhomes, including enhanced maneuverability, improved fuel efficiency, and better on-road and off-road handling.
However, this smaller and more compact size does have a few disadvantages as well, including limited interior space, fewer amenities, and reduced sleeping capacities.
Which can limit the overall appeal of a Class B RV, especially for larger families that need the extra space and higher sleeping capacities.
The good news, however, is that there are several larger and longer Class B RVs on the market today.
That provides some of the extra space and amenities found in larger Class A and Class C motorhomes, while still keeping the overall size on the smaller side.
Giving you the best of both worlds.
So to highlight some of these larger Class B RVs, we’ve listed the five longest Class B RVs you can buy.
Longest Class B RV: Airstream Interstate 24
Quick Specs
- Length: 24 Feet 6 Inches
- Trim Levels: 24GL, 24GT, 24X
- Price: $205,000 to $225,000 (Depending on Trim and Options)
- Chassis: Mercedes-Benz Sprinter 3500 Extended
- Engine: 3.0L V6 Turbo Diesel
- Sleeping Capacity: 2
- Bathroom: 3-Piece Wet Bath
The longest Class B RV on the market today is the Airstream Interstate 24.
Which rivals the length of many Class B+ RVs as well as some smaller Class C RVs, with its length of 24 feet 6 inches.
Which allows the Interstate 24 to offer features and amenities rarely found on a Class B RV.
Built on the premium Mercedes-Benz Sprinter chassis, the Airstream Interstate 24 is available in three different trim levels, including the 24GL, the 24GT, and the 24X.
Which all provide their own unique layout as well as interior features.
Airstream Interstate 24GT Floorplan
Designed to be the ultimate Class B RV, everything about the Interstate 24 is top-notch.
Which seems only appropriate for one of the most expensive Class B RVs on the road today.
As the Airstream Interstate 24 has an eye-popping average price that ranges from $205,000 to $225,000, depending on its trim level and options.
However, for those with the means, the Interstate 24 is truly second to none when it comes to luxury and high-end features.
Airstream Interstate 24GT Interior
As it offers Mercedes-Benz’s advanced performance and safety systems.
As well as Airstream’s robust power and solar system, upgraded air ride suspension, available four-wheel drive, ultra leather seating, and power day/night window shades.
For more information on the Airstream Interstate 24 touring coaches, be sure to check out Airstream’s website by clicking here.
2nd Longest Class B RV: Winnebago ERA
Quick Specs
- Length: 24 Feet 3 Inches
- Trim Levels: 70A, 70B, 70X
- Price: $160,000 to $180,000 (Depending on Trim and Options)
- Chassis: Mercedes-Benz Sprinter
- Engine: 3.0L V6 Turbo Diesel
- Sleeping Capacity: 3
- Bathroom: 3-Piece Wet Bath
Another large premium Class B RV that’s just three inches shorter than the Airstream Interstate 24 from above is the Winnebago ERA, which has an overall length of 24 feet 3 inches.
Making the Winnebago ERA one of the longest Class B RVs currently on the market.
Similar in many ways to the Airstream Interstate 24 the Winnebago ERA is designed and built to be a premium high-end Class B RV.
Offering numerous premium features and upgrades, including multiple touchscreen control panels, an upgraded heating/cooling system, and a fully equipped kitchen with Corian solid surface countertops and stainless steel appliances.
As well as MCD roller shades, a power patio awning, a 200-watt solar panel, two AGM deep cycle batteries, a 1,000-watt Pure Sine Wave inverter, and a 2,500-watt Cummins Onan QG LP generator.
Winnebago ERA 70A Floorplan
And like the Airstream Interstate 24, the Winnebago ERA is built on the premium Mercedes-Benz Sprinter chassis.
Which offers additional upgrades.
Including a powerful yet fuel-efficient 3.0L 6 cylinder turbo diesel engine, an MBUX infotainment system with voice control, and a wide range of advanced safety features, such as active brake assist and blind-spot monitoring.
Winnebago ERA 70A Interior
But perhaps one of the best upgrades available on the ERA, thanks to the premium Mercedes-Benz Sprinter chassis is its optional four-wheel-drive capability.
As the Sprinter chassis can be equipped with optional on-demand 4WD with Hi/Lo range, allowing the Winnebago ERA to go further off the beaten path.
For more info on the Winnebago ERA and to see its different trim levels and floorplans, check out Winnebago’s website by clicking here.
3rd Longest Class B RV: Coachmen Galleria
Quick Specs
- Length: 24 Feet 3 Inches
- Trim Levels: 24A, 24FL, 24Q, 24T
- Price: $150,000 to $185,000 (Depending on Trim and Options)
- Chassis: Mercedes-Benz Sprinter 3500 Extended
- Engine: 3.0L V6 Turbo Diesel
- Sleeping Capacity: 2
- Bathroom: 3-Piece Wet Bath
Despite being the 3rd longest Class B RV on this list, the Coachmen Galleria actually has the same overall length as the Winnebago ERA from above, with a length of 24 feet 3 inches.
Tying the Winnebago ERA, for the second-longest Class B RV.
Built on the premium Mercedes-Benz Sprinter chassis like the first two Class B RVs on this list, the Coachmen Galleria is available in four different trim levels, including the 24A, the 24FL, the 24Q, and the 23T.
Which each have their own unique layout and set of features.
Coachmen Galleria 24A Floorplan
Regardless of its trim level and layout though, every Coachmen Galleria offers several standard upgrades that really help to set it apart from other less expensive and smaller Class B RVs.
Including a full three-piece wet bath, a well-equipped kitchen, and an Onan QG 2500 LP generator.
As well as 330-watts of solar power, upgraded insulation, and standard Sumo Spring suspension for a smoother and more comfortable ride.
Coachmen Galleria 24A Interior
In addition, the Galleria also offers one of the most well-appointed interiors in a Class B RV.
Offering such premium features as custom high gloss hardwood cabinetry, soft close hinges and drawers, heated front swivel seats, and premium materials throughout.
And if you’re looking to go green with your off-grid power, the Coachmen Galleria has you covered.
As you can option the coach with Coachmen’s Li3 Lithium Battery System.
Which replaces the LP generator, AGM deep cycle battery, and 2,000-watt Pure Sine Wave inverter, for a 630 amp-hour lithium-ion battery, a second under hood alternator, and a Xantrex XC Pro 3,000-watt inverter/charger.
For more info on the Coachmen Galleria and to see a full 3D walk-through of the coach, check out Coachmen’s website by clicking here.
4th Longest Class B RV: Winnebago Boldt
Quick Specs
- Length: 22 Feet 11 Inches
- Trim Levels: 70BL, 70KL
- Price: $185,000 to $195,000 (Depending on Trim and Options)
- Chassis: Mercedes-Benz Sprinter
- Engine: 3.0L V6 Turbo Diesel
- Sleeping Capacity: 3
- Bathroom: 2-Piece Wet Bath
One of the most well-equipped longer Class B RVs on the market today that’s great for exploring and adventure-seeking is the Winnebago Boldt.
As this unique Class B RV from Winnebago was designed to offer the perfect blend of functionality, utility, and comfort while boondocking.
Winnebago Boldt 70BL Floorplan
Named after the famous German explorer and naturalist Alexander Von Humboldt – the Boldt is one of the best long Class B RVs you can take into the backcountry.
Thanks to numerous best-in-class boondocking and dry camp features.
Including a Pure3 system, which offers 12,000 watt-hours of clean quiet lithium-ion battery power, a myVolta app that allows you to monitor the entire battery system from your smartphone, a 3,600-watt Pure Sine Wave inverter, and two 115-watt solar panels.
As well as extra-large holding tanks, including a 21-gallon freshwater tank, large gray and black water tanks, and a 67-pound onboard propane tank.
To see other Class B RVs great for boondocking and off-grid camping, check out our article “10 Best Class B RVs for Boondocking and Dry Camping“.
Winnebago Boldt 70BL Interior
Perhaps one of the best features of the Boldt though is its all-season capability.
As the Winnebago Boldt is equipped with robust insulation throughout, in-coach water lines, a Truma Combi Eco Plus heating system, and heated drainage lines.
Allowing you to camp year-round in the Boldt, even when the temperature starts to drop outside.
To see other cold-weather capable Class B RVs, check out our article “10 Best Class B RVs for Winter Camping (With Pricing)“
For more information on the Winnebago Boldt, check out Winnebago’s website by clicking here.
5th Longest Class B RV: Coachmen Beyond
Quick Specs
- Length: 22 Feet 2 Inches
- Trim Levels: 22C, 22D, 22RB
- Price: $130,000 to $150,000 (Depending on Trim and Options)
- Chassis: Ford Transit 350 HD
- Engine: Gas 3.5L EcoBoost
- Sleeping Capacity: 2
- Bathroom: 3-Piece Wet Bath
The Coachmen Beyond is the only Class B RV on this list that’s built on the more economical Ford Transit chassis.
Which is one of the main reasons why it’s the most affordable long Class B RV on this list.
To see other budget-friendly Class B RVs, check out our article “The 10 Cheapest Class B RVs You Can Buy!“.
Coachmen Beyond 22D Floorplan
But just because the Coachmen Beyond is the most affordable Class B RV on this list, that doesn’t mean that it’s some stripped-down bare-bones motorhome.
As the Coachmen Beyond is a very well-equipped Class B RV.
Offering many of the same features found on more expensive Class B motorhomes.
As it includes such upgrades as a three-piece wet bath, a full-featured kitchen, and a 2,800KW gas generator.
As well as a 195-watt solar panel, a 2,000-watt Xantrex inverter, Sumo Springs suspension kit, a Truma Combi Eco Plus heater, and a Coleman Mach 10 NDQ air conditioner.
Coachmen Beyond 22D Interior
In addition, the Coachmen Beyond can also be optioned with all-wheel drive.
And like the more expensive Coachmen Galleria from above, the Beyond can also be optioned with Coachmen’s Li3 Lithium Battery System.
Allowing you to go green with your off-grid power, thanks to a 630 amp-hour lithium-ion battery, a second alternator under the hood, and a Xantrex XC Pro 3,000-watt inverter/charger.
For more info on the Coachmen Beyond and to see a full 3D tour of the coach, check out Coachmen’s website by clicking here.
Longest Class B RV Runner-Ups
Now that we’ve covered the longest Class B RVs you can buy, we thought we’d take a few minutes to mention a few honorable mentions.
As these below longest Class B RVs runner-ups just missed this list by a few feet or less.
- Thor Motor Coach Tellaro – 21 Feet 1 Inch
- Winnebago Solis 59 PX – 21 Feet
- Winnebago Travato – 21 Feet
- Jayco Swift – 20 Feet 11 Inches
- Coachmen Nova – 20 Feet 11 Inches
- Thor Motor Coach Sequence – 20 Feet 11 Inches
- Roadtrek Zion Slumber – 20 Feet 9 Inches
To see the longest Class C RVs, check out our article “The 5 Longest Class C Motorhomes You Can Buy“.
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