2025 Keystone Alpine 3700FL vs 2025 Heartland Landmark 365 Newport

Detailed Comparison

The 2025 Keystone Alpine 3700FL goes up against the 2025 Heartland Landmark 365 Newport in this detailed comparison. Each has distinct advantages worth considering.

Starting with size, the Keystone Alpine 3700FL measures 37.5 ft long and tips the scales at 10,800 lbs dry weight. The Heartland Landmark 365 Newport comes in at 38.5 ft with a dry weight of 12,800 lbs.

The Keystone Alpine 3700FL sleeps 4 while the Heartland Landmark 365 Newport accommodates 10. Slide-outs play a role in livability: the Keystone Alpine 3700FL has 2 and the Heartland Landmark 365 Newport has 2.

For boondocking enthusiasts, tank sizes matter. Fresh water capacity goes to the Keystone Alpine 3700FL at 72 gallons versus 56 gallons. Solar-wise, you get 450W on the Keystone Alpine 3700FL and 300W on the Heartland Landmark 365 Newport. Battery banks are 350 Ah and 350 Ah.

At $91,000 MSRP for the Keystone Alpine 3700FL and $89,000 for the Heartland Landmark 365 Newport, the Heartland Landmark 365 Newport saves you $2,000. With only a 2% price difference, the choice comes down to features rather than cost.

If you're traveling with a family, look for the model with more sleeping positions and better storage. Boondockers: look at the fresh water capacity and solar/battery systems — they determine how long you can stay out. For the full-time RV lifestyle, every gallon of tank capacity and every inch of counter space counts.

The numbers tell one story, but the feel of a floor plan is personal. Schedule a walkthrough before you decide.