2025 Grand Design Solitude 310GK vs 2024 Keystone Montana 3761FL

Detailed Comparison

Two noteworthy RVs face off: the 2025 Grand Design Solitude 310GK and the 2024 Keystone Montana 3761FL. From dimensions to amenities, here's the full breakdown.

In terms of footprint, the Grand Design Solitude 310GK stretches 30.5 ft while the Keystone Montana 3761FL spans 38.0 ft. Weight-wise, the Grand Design Solitude 310GK is the lighter rig at 12,500 lbs versus 14,600 lbs.

Capacity-wise, expect to sleep 6 in the Grand Design Solitude 310GK versus 9 in the Keystone Montana 3761FL. With 5 and 2 slide-outs respectively, the parked floor plans differ significantly.

Tank capacities are a key off-grid consideration. The Grand Design Solitude 310GK carries 64 gal of fresh water, 59 gal gray, and 48 gal black. The Keystone Montana 3761FL offers 63 gal fresh, 43 gal gray, and 38 gal black. The Grand Design Solitude 310GK has the edge for extended dry camping.

Budget-wise, the Keystone Montana 3761FL is listed at $78,000 compared to $80,000 for the Grand Design Solitude 310GK.

For family camping trips, the larger floor plan and additional berths make a real difference. For boondocking, the model with superior solar and battery setup will keep you comfortable off the grid longer. If you're going full-time, the larger tanks and more robust build quality matter enormously.

Both options have earned their place in the market. Your trip style and budget should be the final tiebreakers.