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Montana RV length limits

Montana's limits for motorhomes, trailers, triple towing and height, quoted from its own law. Enter your rig to check it.

The law in Montana

Motorhome: 55 ft
"(1) A single truck, bus, or self-propelled vehicle, unladen or with load, may not have an overall length, inclusive of front and rear bumpers, in excess of 55 feet."
Overall combination: 75 ft
"(c) All other combinations of vehicles may not have a combination length in excess of 75 feet"
Triple towing: With conditions
"If the combination consists of more than two units, the rear units of the combination must be equipped with breakaway brakes."
Height: 14 ft
"(1) Except as provided in subsection (2), a vehicle, unladen or with load, may not exceed a height of 14 feet."
Width: 102 in (8 ft 6 in)
"(1) Except as provided in subsections (2) and (3), a vehicle, including a bus, unloaded or with load, may not have a total outside width in excess of 102 inches."

MCA 61-10-104, Length, Montana Code Annotated, checked November 2026.

RV Length Limits by StateMontana

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Truck and trailer or fifth wheel · Montana

Within the limits

Yes. Your truck and trailer is within Montana's length limits.

Add your height to check it against Montana's 14 ft limit.

Overall length
WithinYours 52 ft · limit 75 ft
"(c) All other combinations of vehicles may not have a combination length in excess of 75 feet"
"(4) A passenger vehicle or truck of less than 2,000 pounds "manufacturer's rated capacity" may not tow more than one trailer or semitrailer, and this combination may not have a length in excess of 65 feet."

Width: 102 in (8 ft 6 in)

"(1) Except as provided in subsections (2) and (3), a vehicle, including a bus, unloaded or with load, may not have a total outside width in excess of 102 inches."

"(3) The width of a recreational vehicle and a camper that is being operated for noncommercial purposes may exceed 102 inches if: (a) the excess width is attributable to recreational vehicle or camper appurtenances that do not extend beyond the exterior rearview mirrors of the recreational vehicle, the camper, a vehicle being towed by the recreational vehicle, or the motor vehicle providing motive power; and (b) the rearview mirrors extend only the distance necessary to provide the appropriate field of view for the vehicle before the recreational vehicle or camper appurtenances are attached."

"(c) "Recreational vehicle or camper appurtenances" means an awning and its support hardware or any appendage that is intended to be an integral part of the recreational vehicle or camper and that is installed by the manufacturer or dealer."

Where to stay in Montana

32 RV parks listed in Montana.

See Montana RV parks

Common questions

RV length and towing questions

55 ft. Montana's law says: "(1) A single truck, bus, or self-propelled vehicle, unladen or with load, may not have an overall length, inclusive of front and rear bumpers, in excess of 55 feet."

75 ft overall. Montana's law says: "(c) All other combinations of vehicles may not have a combination length in excess of 75 feet"

With conditions. Montana's law says: "If the combination consists of more than two units, the rear units of the combination must be equipped with breakaway brakes."

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