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    1. Home
    2. Fifth wheel trailers
    3. Heartland
    4. Milestone
    5. 377MB
    Heartland Milestone 377MB exterior

    Heartland Milestone 377MB

    • Mid bunk
    • Front bedroom
    • Rear living area
    • Bath and a half
    • Loft
    Browse inventory (9)
    Heartland Milestone 377MB floor plan
    Heartland Milestone 377MB floor plan

    Find a Heartland Milestone 377MB

    See it in person or find a great deal nationwide.
    Browse inventory (9)

    Similar floor plans

    Fifth wheel trailers that share features with the Milestone 377MB, like front bedroom, rear window and fireplace.

    Jayco Eagle 30.5RSOK exterior

    Jayco Eagle 30.5RSOK

    MSRP$95,117

    1 unit available

    Jayco Eagle 30.5RSOK floor plan
    Max weight

    14,000 lbs

    Length

    33 ft 10 in

    Sleeps

    4

    Highland Ridge Roamer Light Duty 304BHS exterior

    Highland Ridge Roamer Light Duty 304BHS

    Front bedroom, loft, mid bunk, mid office

    MSRP$75,915
    Highland Ridge Roamer Light Duty 304BHS floor plan
    Max weight

    10,600 lbs

    Length

    33 ft 7 in

    Sleeps

    7

    Highland Ridge Silverstar Light Duty 304BHS exterior

    Highland Ridge Silverstar Light Duty 304BHS

    MSRP$78,743
    Highland Ridge Silverstar Light Duty 304BHS floor plan
    Max weight

    10,115 lbs

    Length

    33 ft 3 in

    Sleeps

    7

    Brinkley Model Z 2900 exterior

    Brinkley Model Z 2900

    Rear living, large kitchen, walk-thru bath

    MSRP$118,385

    188 units available

    Brinkley Model Z 2900 floor plan

    RV Envy's expert take

    We like: Unique bathroom layout, Large end tables, Televator provides more kitchen counter space, Ample storage

    Consider: Awkward toilet location

    Max weight

    14,995 lbs

    Length

    32 ft 11 in

    Sleeps

    5

    K-Z Durango Half-Ton D256RKT exterior

    K-Z Durango Half-Ton D256RKT

    Front bedroom, rear kitchen

    MSRP$90,502

    1 unit available

    K-Z Durango Half-Ton D256RKT floor plan

    RV Envy's expert take

    We like: Large, modern kitchen, Large living area

    Consider: Limited bathroom counterspace, Small nightstands

    Max weight

    11,500 lbs

    Length

    33 ft 3 in

    Sleeps

    5

    Keystone Cougar 290RLS exterior

    Keystone Cougar 290RLS

    Front bedroom, rear living area, booth dinette

    MSRP$80,670

    60 units available

    Keystone Cougar 290RLS floor plan
    Max weight

    12,900 lbs

    Length

    33 ft 8 in

    Sleeps

    6

    Alliance RV Avenue 31BHS exterior

    Alliance RV Avenue 31BHS

    MSRP$82,685

    5 units available

    Alliance RV Avenue 31BHS floor plan
    Max weight

    12,500 lbs

    Length

    33 ft 11 in

    Sleeps

    6

    Alliance RV Paradigm 295MK exterior

    Alliance RV Paradigm 295MK

    Front bedroom, rear living area

    MSRP$112,962

    5 units available

    Alliance RV Paradigm 295MK floor plan
    Max weight

    16,000 lbs

    Length

    33 ft 3 in

    Sleeps

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    Other Milestone floor plans

    Heartland Milestone 317RL

    MSRP$61,322

    2 units available

    Heartland Milestone 317RL floor plan
    Max weight

    15,000 lbs

    Length

    35 ft 9 in

    Sleeps

    6

    Heartland Milestone 31RL

    MSRP$98,993

    44 units available

    Heartland Milestone 31RL floor plan
    Max weight

    14,800 lbs

    Length

    35 ft 9 in

    Sleeps

    4

    Heartland Milestone 321FL

    MSRP$96,195

    2 units available

    Heartland Milestone 321FL floor plan
    Max weight

    15,000 lbs

    Length

    38 ft 4 in

    Sleeps

    4

    Heartland Milestone 326RL

    MSRP$95,593

    2 units available

    Heartland Milestone 326RL floor plan
    Max weight

    15,000 lbs

    Length

    38 ft

    Sleeps

    4

    Heartland Milestone 333MB

    MSRP$96,195

    3 units available

    Heartland Milestone 333MB floor plan
    Max weight

    15,000 lbs

    Length

    37 ft 10 in

    Sleeps

    6

    Heartland Milestone 360HP

    Rear kitchen, desk, walk-thru bath

    MSRP$100,130
    Heartland Milestone 360HP floor plan

    RV Envy's expert take

    We like: Desk in large pantry, Large bedroom

    Consider: Only one nightstand

    Max weight

    15,000 lbs

    Length

    41 ft 1 in

    Sleeps

    4

    Heartland Milestone 360RD

    MSRPTBD

    3 units available

    Heartland Milestone 360RD floor plan
    Max weight

    12,060 lbs

    Length

    40 ft 4 in

    Sleeps

    6

    Heartland Milestone 370FLMB

    Rear bedroom, front living, loft

    MSRP$105,823

    4 units available

    Heartland Milestone 370FLMB floor plan
    Max weight

    15,000 lbs

    Length

    44 ft 2 in

    Sleeps

    4

    Heartland Milestone 379FLML

    MSRP$120,651
    Heartland Milestone 379FLML floor plan
    Max weight

    15,000 lbs

    Length

    43 ft 2 in

    Sleeps

    8

    Heartland Milestone 380DSL

    Rear bath, front bedroom, loft, two full baths, two bedrooms

    MSRP$104,767
    Heartland Milestone 380DSL floor plan
    Max weight

    15,000 lbs

    Length

    43 ft 5 in

    Sleeps

    8

    View all Milestone floor plans →
    Heartland Milestone 377MB overview
    • Mid bunk
    • Front bedroom
    • Rear living area
    • Bath and a half
    • Loft
    Heartland Milestone 377MB exterior

    Key facts

    Length
    42 ft 2 in
    Max weight
    15,000 lbs
    Sleeps
    6

    Specs

    Dimensions

    Length
    42 ft 2 in
    Height
    13 ft 6 in
    Slideouts
    4
    Axles
    2

    Tanks & capacities

    Key facts

    Length
    42 ft 2 in
    Max weight
    15,000 lbs
    Sleeps
    6

    AI summary

    The 377MB puts the living area in the rear with a window to match, which makes for a surprisingly open feel when you're relaxing — and the mid-bunk layout keeps the front bedroom private and quiet. Heartland loaded the kitchen end with a residential 14 cu ft fridge with built-in wine cooler, a 21" oven, and anti-microbial solid surface countertops on a peninsula, plus an outdoor kitchen for when you'd rather cook outside. Two 190-watt solar panels, a 2000-watt inverter, and one-touch auto leveling mean less setup hassle and more off-grid capability than most rigs in this class. Toss in a 40" fireplace, JBL sound system, loft, and washer/dryer prep, and this is a floor plan built for people who want to stay longer, not just pull in for the weekend.

    Fresh water
    50 gal
    Gray water
    80 gal
    Black water
    80 gal

    Weight & towing

    Dry weight
    12,790 lbs
    GVWR
    15,000 lbs
    Hitch weight
    2,430 lbs
    3/4 ton truck required
    New Ford F-250, RAM 2500, Sierra 2500, or bigger

    Based on overall weight and weight directly on tow vehicle's hitch and a new model tow vehicle. Please consult with a professional.

    Accommodations

    Sleeps
    6

    Available years

    2025202420232022202120202019
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