2026 Heartland Bighorn 31RL vs 37MD
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Key differences
Both are 2026 Fifth wheel models from the Heartland Bighorn line. Here's how they differ, from manufacturer specifications.
- The 37MD is 6′ 10″ longer: 42′ 10″ vs 36′.
- The 31RL is 2,590 lb lighter unloaded: 13,060 vs 15,650 lb.
- The 37MD has a 2,100 lb higher GVWR: 18,100 vs 16,000 lb.
- The 31RL lists 490 lb more cargo capacity: 2,940 vs 2,450 lb.
- The 31RL has a 300 lb lighter hitch weight: 2,405 vs 2,705 lb.
- The 37MD sleeps 4 more: 8 vs 4.
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YOUR SHORTLIST
Floorplan
PRICING
Manufacturer price (USD)
Not verified
Not verified
Lowest tracked dealer price (USD)
No recently verified dealer price
No recently verified dealer price
Est. monthly payment (USD)
No verified price to estimate from
No verified price to estimate from
DIMENSIONS & WEIGHTS
Exterior length
36′ 0″
42′ 10″
Exterior width
8′ 6″
8′ 6″
Exterior height
13′ 3″
13′ 3″
Shipping / unloaded weight
13,060 lb
15,650 lb
GVWR
16,000 lb
18,100 lb
Listed cargo capacity
2,940 lb
2,450 lb
Listed hitch weight
2,405 lb
2,705 lb
LIVING & SLEEPING
Sleeping capacity
4
8
Slide-outs
—
—
Main bed
Not verified
Not verified
Bunk beds
Not verified
Not verified
Dinette
Not verified
Not verified
Bathroom
Not verified
Not verified
Refrigerator
Not verified
Not verified
TANKS & EVERYDAY FEATURES
Fresh water
75 gal
75 gal
Gray water
87 gal
87 gal
Black water
50 gal
50 gal
Awning length
16′ 0″
20′ 0″
Shore power / electrical service
Not verified
Not verified
Solar equipment
Not verified
Not verified
Outdoor kitchen
Not verified
Not verified
Washer/dryer prep
Not verified
Not verified
Microwave
Not verified
Not verified
Cooktop
Not verified
Not verified
Air conditioning
Not verified
Not verified
Electric fireplace
Not verified
Not verified
Backup camera
Not verified
Not verified
Propane tanks
—
—
Tire size
215/75R17.5'H'
215/75R17.5'H'
SOURCES & VERIFICATION
Weight basis
Manufacturer unloaded vehicle weight
Manufacturer unloaded vehicle weight
Source checked
2026-10-28 Manufacturer ↗
2026-10-28 Manufacturer ↗
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Manufacturer floorplan images © their respective manufacturers. Specs checked October 19, 2026; exact-unit labels and production options may differ. “Not verified” or a dash means we have no confirmed value. “Not listed” means the applicable manufacturer equipment was checked but does not mention the feature; it does not mean “No.” “Conflicting data” means manufacturer entries disagree. “Optional” equipment is available but is not confirmed as standard. Camera prep does not confirm an installed camera. Weights are kept separate: unloaded weight, GVWR, cargo capacity, and hitch weight. Confirm every specification for the exact model year and configuration with the manufacturer. This tool does not establish towing compatibility.
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