Photo by Bill W Ca at English Wikipedia via Wikimedia Commons (https://commons.wikimedia.org/wiki/File:Fifth-wheel.jpg) (Public domain)
2025 Grand Design Solitude 310GK
by Grand Design
Full Specifications
General Info
| Manufacturer | Grand Design |
| Country of Origin | USA |
| Year | 2025 |
| Category | Fifth Wheel |
| Subcategory | — |
Dimensions & Weight
| Length | 30.5 ft |
| Width | 8 ft |
| Height | 13.5 ft |
| Dry Weight | 12,500 lbs |
| GVWR | 16,800 lbs |
| Hitch Weight | 2,130 lbs |
| Cargo Capacity | 4,300 lbs |
Engine & Chassis
| Fuel Type | N/A |
| Engine | — |
| Chassis | — |
| Horsepower | — |
| Fuel Capacity | — |
Living & Off-Grid
| Sleeping Capacity | 6 |
| Slide-Outs | 5 |
| Awning Length | 17 ft |
| A/C | 13,500 BTU |
| Furnace | 20,000 BTU |
| Fridge | 2-way (LP/Electric) |
| Fresh Water | 64 gal |
| Gray Water | 59 gal |
| Black Water | 48 gal |
| Solar | 150 W |
| Battery | 250 Ah |
| Inverter | 2,500 W |
About the 2025 Grand Design Solitude 310GK
For those who want the maximum amount of living space in a towable package, the 2025 Grand Design Solitude 310GK by Grand Design delivers exactly that. This 2025 fifth wheel leverages its unique hitch design to create split-level luxury.
Stretching 30.5 feet from bumper to bumper, 8.0 feet wide and with a height of 13.5 feet, the 2025 Grand Design Solitude 310GK tips the scales at 12,500 pounds dry weight, and a gross vehicle weight rating of 16,800 pounds, leaving you 4,300 lbs of cargo carrying capacity. Equipped with 5 slide-outs, the 2025 Grand Design Solitude 310GK provides noticeably more elbow room at your campsite.
Accommodating up to 6 sleepers, the 2025 Grand Design Solitude 310GK is built for family camping trips and group getaways. Multiple sleeping zones ensure everyone has their own space, from dedicated bunks to convertible living areas that transform as the day winds down.
Off-grid capability is well supported thanks to a generous 64-gallon fresh water supply, 59 gallons of gray water holding, a 48-gallon black water tank. For electrical needs, the unit provides 150-watt solar charging capability, 250 amp-hours of battery storage, a 2500-watt inverter for household AC power. A 13,500 BTU air conditioner keeps things cool in summer heat, and 20,000 BTU of furnace output tackles chilly evenings. A 2-way (LP/Electric) refrigerator keeps provisions fresh on the road and at camp. Outside, a 17.0-foot power awning provides welcome shade for outdoor dining and relaxation.
Towing the 12,500-pound 2025 Grand Design Solitude 310GK demands adequate tow capacity from your truck. and a tongue weight of 2,130 pounds that your hitch must support. When loaded to capacity at 16,800 lbs GVWR, proper weight distribution becomes essential for safe towing.
The 2025 Grand Design Solitude 310GK carries an MSRP of $80,000, positioning it squarely in the mid-range of the Fifth Wheel market where competition is fierce and buyers expect solid value. If you already own a heavy-duty truck, the 2025 Grand Design Solitude 310GK transforms it into the tow vehicle for one of the most spacious and comfortable towable RV experiences available.
For 2025, the 2025 Grand Design Solitude 310GK continues to demonstrate why Grand Design remains a respected name in the RV industry. It delivers a compelling combination of comfort, capability, and craftsmanship that holds up under real-world scrutiny.
The 2025 Grand Design Solitude 310GK represents the gold standard in fifth wheel design, combining innovative floor plans with construction quality that lasts for decades.
The bi-level floor plan spans 30.5 feet with 5 slide-out(s), creating distinct living zones for entertaining and relaxation. The raised bedroom suite features a king bed, dual nightstands, and a spacious wardrobe. The main level kitchen boasts a 2-way (LP/Electric) refrigerator, pantry, and island with solid-surface countertops.
The 2025 Grand Design Solitude 310GK is built with residential-height ceilings in the main living area, washer/dryer prep, and a 50-amp electrical system. Starting at $80,000, it competes favorably with coaches costing twice as much.