Grand Design Solitude
30 floorplansFifth wheel2015– (in production)Better build tier
Grand Design (Better tier): Solitude is Grand Design's full-profile flagship: R-11 welded-aluminum laminated walls, 101" widebody chassis, MORryde independent suspension and 17.5" H-rated tires — genuine full-time-capable construction.
What one actually costs today: $32,500–$203,900 across the line, new sticker or used estimate per model.
THE FLOORPLANS: 30
| MODEL | YEARS | LENGTH | GVWR | SLEEPS | PRICE TODAY | FINDING ONE |
|---|---|---|---|---|---|---|
| 305RE | 2015–15 | 35.9 ft | 16,000 lb | 4 | $32,500used est. | Patient search |
| 310GK | 2017– | 34.3 ft | 19,000 lb | 4 | $157,200 | Common |
| 344GK | 2018–20 | 36.9 ft | 16,800 lb | 6 | $54,400used est. | Findable |
| 345GK | 2021–23 | 37.2 ft | 16,800 lb | 4 | $73,400used est. | Findable |
| 366DEN | 2015–16 | 40.3 ft | 16,000 lb | 5 | $45,300used est. | Patient search |
| 370DV | 2024– | 37.8 ft | 19,000 lb | 4 | $161,800 | Findable |
| 372WB | 2019–22 | 41.3 ft | 16,800 lb | 4 | $76,300used est. | Findable |
| 373FB | 2018–23 | 41.3 ft | 16,800 lb | 4 | $88,100used est. | Findable |
| 374TH | 2017–19 | 41.3 ft | 20,000 lb | 6 | $62,500used est. | Findable |
| 375RES | 2017–22 | 41.3 ft | 16,800 lb | 6 | $84,300used est. | Findable |
| 376RD | 2023– | 42.5 ft | 19,000 lb | 6 | $176,600 | Findable |
| 377MBS | 2017–20 | 41.3 ft | 16,800 lb | 10 | $57,000used est. | Findable |
| 378MBS | 2021–24 | 40.2 ft | 18,000 lb | 8 | $86,700used est. | Findable |
| 379FLS | 2017–19 | 42.5 ft | 16,800 lb | 6 | $55,200used est. | Findable |
| 380FL | 2020– | 41.3 ft | 19,000 lb | 6 | $179,200 | Findable |
| 382WB | 2020– | 41.3 ft | 19,000 lb | 6 | $181,500 | Findable |
| 384GK | 2016–19 | 40.6 ft | 16,800 lb | 4 | $53,000used est. | Findable |
| 385GK | 2020–20 | 40.5 ft | 16,800 lb | 6 | $57,500used est. | Patient search |
| 388MBS | 2025–26 | 42.9 ft | 19,000 lb | 5 | $129,800used est. | Patient search |
| 390RK | 2020– | 42.4 ft | 19,000 lb | 6 | $178,700 | Findable |
| 391DL | 2023–26 | 42.4 ft | 19,000 lb | 6 | $128,900used est. | Findable |
| 414LJMJ | 2026– | 42.8 ft | 23,500 lb | 6 | $203,900 | Patient search |
| 417KB | 2025– | 41.7 ft | 19,000 lb | 6 | $155,100 | Findable |
| 2930RL | 2020–24 | 34.3 ft | 15,000 lb | 2 | $71,400used est. | Findable |
| 3330RE | 2022–24 | 37.9 ft | 16,800 lb | 6 | $78,000used est. | Findable |
| 3460FL | 2023–24 | 37.9 ft | 16,800 lb | 6 | $78,500used est. | Patient search |
| 3540GK | 2021–22 | 38.3 ft | 16,800 lb | 4 | $72,900used est. | Patient search |
| 3550BH | 2020–22 | 39.8 ft | 16,800 lb | 8 | $61,700used est. | Findable |
| 3740BH | 2019–24 | 40.3 ft | 16,800 lb | 8 | $76,100used est. | Findable |
| 3950BH | 2020–24 | 40.3 ft | 16,800 lb | 7 | $78,400used est. | Findable |
THE LINE, YEAR BY YEAR
Assembled from eight-plus model years of brochures, floorplan by floorplan. This is the part a spec sheet can't tell you: which years changed, and which year is the buy.
- 2015Introduced in the first Solitude lineup
- 2015Predecessor 379FL introduced with a 16,000 lb GVWR
- 2016Discontinued
- 2016Predecessor 377MB introduced with a 16,000 lb GVWR
- 2016Introduced
- 2017Introduced at 34' 11", 15,000 lb GVWR and 12,100 lb dry
- 2017Introduced
- 2017Introduced at 16,500 lb GVWR with 2,300 lb cargo capacity
- 2017Renamed 377MBS; GVWR raised to 16,800 lb
- 2017Renamed 379FLS; GVWR raised to 16,800 lb
- 2018Introduced
- 2019Introduced
- 2019Discontinued
- 2020Replaced by the 380FL
- 2020Introduced, replacing the 379FLS
- 2020Introduced, replacing the 372WB
- 2020Replaced by the 385GK
- 2020Introduced and discontinued in the same model year
- 2020Introduced
- 2020Introduced in the S-Class Edition
- 2021Replaced by the 345GK
- 2021Introduced, replacing the 344GK
- 2021Replaced by the 378MBS
- 2021Introduced with an 18,000 lb GVWR, up from the 377MBS
- 2022Discontinued in favour of the 382WB
- 202216,800 lb GVWR with 2,600 lb cargo capacity by the final year; MSRP $140,648
- 2022Discontinued after the 2022 model year — the 376RD took its slot for 2023
- 2023Discontinued
- 2023Introduced
- 2023GVWR raised to 19,000 lb
- 2024Length trimmed to 34' 4"
- 2024Replaced by the 370DV
- 2024Introduced
- 2024Sold as the 41KB with an 18,000 lb GVWR
- 2024Final model year; still shown on Grand Design's S-Class archive page
- 2025GVWR raised from 15,000 to 19,000 lb — cargo capacity jumps from 2,900 to 6,900 lb; MSRP $139,400
- 2025Replaced by the 388MBS
- 2025Introduced, replacing the 378MBS
- 2025Renamed 417KB; GVWR raised to 19,000 lb
- 2026MSRP $141,620
- 2026Introduced
- 2027Dry up to 13,200 lb; MSRP $157,160
- 2027Moved to dealer-stock-only status
Which Solitude is the right one, if any?
A line this size hides real differences behind similar names. Set what you care about (weight, bunks, build, budget) as sliders, and watch every floorplan here get ranked against the whole market, not just against each other.
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