The 2025 Grand Design Solitude 390RK is a high-end luxury fifth wheel built for full-time living and extended travel. With its massive rear kitchen, elevated living room, and residential comforts, this model is one of Grand Design’s most spacious and popular Solitude floorplans — now available at Sonny’s RVs.
The 390RK offers one of the biggest kitchens in the Solitude lineup—perfect for cooking, entertaining, and long-term stays. Enjoy expansive prep space, premium appliances, and abundant storage.
Relax in a spacious lounge featuring dual sofas, recliners, a Smart TV, and a fireplace—ideal for cozy Wyoming evenings or hosting guests.
Enjoy a comfortable queen or king bed, wardrobe storage, and a spacious residential-style bathroom with premium finishes.
Sonny’s RVs is Casper’s trusted Grand Design Solitude dealer, offering transparent pricing, family-owned service, expert support, and great financing options.
Serving Casper, Douglas, Glenrock, Riverton, Wheatland, Gillette, and beyond, Sonny’s RVs welcomes you to tour the 2025 Solitude 390RK and explore our full Grand Design inventory.
The 2025 Grand Design Solitude 390RK combines a chef-worthy kitchen, residential comfort, and Grand Design’s exceptional build quality — all backed by the dependable team at Sonny’s RVs.
Information and features are based on manufacturer data and may vary from the actual unit. Sonny’s RVs is not responsible for errors or omissions. Prices and availability may change without notice. Buyers must verify all details, features, and conditions with a Sonny’s RVs sales representative before purchase.
| Stock # | N25-8887 |
| Location | Sonnys RVS |
| Year | 2025 |
| Make | Grand Design |
| Model | Solitude |
| Trim | 390RK |
| Condition | NEW |
| Status | In-Stock |
The 2025 Grand Design Solitude 390RK is a high-end luxury fifth wheel built for full-time living and extended travel. With its massive rear kitchen, elevated living room, and residential comforts, this model is one of Grand Design’s most spacious and popular Solitude floorplans — now available at Sonny’s RVs.
The 390RK offers one of the biggest kitchens in the Solitude lineup—perfect for cooking, entertaining, and long-term stays. Enjoy expansive prep space, premium appliances, and abundant storage.
Relax in a spacious lounge featuring dual sofas, recliners, a Smart TV, and a fireplace—ideal for cozy Wyoming evenings or hosting guests.
Enjoy a comfortable queen or king bed, wardrobe storage, and a spacious residential-style bathroom with premium finishes.
Sonny’s RVs is Casper’s trusted Grand Design Solitude dealer, offering transparent pricing, family-owned service, expert support, and great financing options.
Serving Casper, Douglas, Glenrock, Riverton, Wheatland, Gillette, and beyond, Sonny’s RVs welcomes you to tour the 2025 Solitude 390RK and explore our full Grand Design inventory.
The 2025 Grand Design Solitude 390RK combines a chef-worthy kitchen, residential comfort, and Grand Design’s exceptional build quality — all backed by the dependable team at Sonny’s RVs.
| General | |
|---|---|
| Class | Fifth Wheel |
| Secondary Category | Rear Kitchen |
| Other Specifications | |
|---|---|
| Wheels Composition | Aluminum |
| Number Of Axles | 2 |
| Front Brake Type | Not Applicable |
| Rear Brake Type | Electric Drum |
| Width (IN/MM) | 8.42 ft. (101 in.) |
| Length (FT/IN) | 42' 6" |
| Gross Weight Rating (LB/KG) | 18,000 lbs. LBS |
| Number Of Propane Tanks | 2 |
| Total Propane Tank Capacity (GAL/LBS) | 60 lbs. |
| Body Material | Fiberglass |
| Number Of Doors | 1 |
| Number Of Slideouts | 5 |
| Awning Length (FT/M) | 16 ft. (192 in.) |
| Power Retractable Awning | Yes |
| Kitchen Table Configuration | Counter / Island |
| Kitchen Location | Rear |
| Living Area Location | Center |
| Number Of Oven Burners | 4 |
| Overhead Fan | Yes |
| Layout | Oven / Stove |
| Refrigerator Power Mode | Electric / Propane |
| Number Of Sofas | 2 |
| Sofa Material | Vinyl |
| Reclining Sofa | No |
| Max Sleeping Count | 6 |
| Number Of Bunk Beds | 0 |
| Number Of Double Beds | 0 |
| Number Of Full Size Beds | 0 |
| Number Of Queen Size Beds | 1 |
| Number Of King Size Beds | 1 |
| Number Of Convertible Sofa Beds | 2 |
| Bunkhouse | No |
| Number Of Bathrooms | 1 |
| Bathroom Flooring Type | Vinyl |
| Bathroom Location | Center |
| Toilet Type | Porcelain |
| Bathroom Sink | Center |
| Bathroom Medicine Cabinet | Center |
| Bathroom Mirror | Center |
| Bathroom Vent Fan System | Center |
| Battery Power Converter | Yes |
| Air Conditioning Prewiring | Yes |
| Cable Prewiring | Yes |
| Phone Prewiring | No |
| Heat Prewiring | Yes |
| TV Antenna Prewiring | Yes |
| Satellite Prewiring | Yes |
| Washer/Dryer Prewiring | Yes |
| Number Of Emergency Exits | 1 |
| Air Conditioning Type | Automatic |
| Heater Type | Automatic |
| Satellite | Yes |
| Number Of Radios | 1 |
| Surround Sound | No |
| Rear Video Backup Camera | Yes |
| Wallpaper | Yes |
| Interior Wood Finish | Yes |
| Basic Warranty (MO) | 12 |
| Structure Warranty (MO/MI) | 36 |
| Spec | 0 |
| Type | Fifth Wheel |
| Solar Battery Charger | Yes |
| Water Heater Tank | Yes |
| Shower | Center |
| Toilet | Center |
| Heater | 35,000 BTUs |
| Air Conditioning | 30,000 BTUs |
| Speakers | Interior / Exterior |
| Height Closed (IN) | 13.42 ft. (161 in.) |
| Recliners/Rockers | 2 |
| Dry Weight (LBS) | 14562 LBS |
| Hot Deals |
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