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Britax Marathon 70-G3 - Onyx

The Marathon 70-G3 achieves revolutionary head safety through the use of Britax SafeCell Technology in the base, integrated steel bars, and energy absorbing Versa-Tether that work together to minimize head excursion and reduce the risk of head injury during a frontal impact. The Marathon 70-G3 also incorporates Britax Side Impact Protection, offers a no-rethread and quick-adjust five-point harness, multiple buckle and recline adjustments, and an easy-remove cover that also allows access to belt paths from the front of the seat. A head and body pillow is provided for extra comfort and infant positioning.

Features:

  • Base with SafeCell Technology designed to compress in a crash, significantly lowering the center of gravity and counteracting the forward rotation of the child seat which normally propels the child toward the front seat
  • Integrated Steel Bars strengthen the connection to the vehicle and reduce forward flexing of the child seat during a crash
  • Energy-Absorbing Versa-Tether features a staged-release tether webbing to slow forward movement
  • Side Impact Protection comprised of deep side walls lined with energy-absorbing EPP foam distributes crash forces, shields from vehicle intrusion, and contains the head, neck and body
  • Harness Ultra Guard System (HUGS) provides resistance to forward movement in the event of a crash
  • Plush, easy-remove cover with matching comfort pads and infant body pillow
  • Infant Positioning Insert may be necessary for small infants to achieve a snug fit (sold separately)
  • No-rethread, 5-point harness repositions the harness shoulder height without disassembling straps
  • Premium Lower LATCH Connectors for a quick and simple installation featuring a push button for easy release
  • Certified for Aircraft Travel

Manufacturer Recommended Weight/Height Limits:

  • Rear facing:From 5 to 40 pounds
  • Forward facing: From 20 to 70 pounds
  • Height:Up to 49 inches

Product Dimensions:

  • Weight:19.5 pounds
  • Depth/Width/Height:21 x 18.5 x 26 inches

• Made in the USA and Imported- USA
• 100% Polyester

Product Notes

Popularity: #31 in Car Seats
View All Britax Marathon G3

Britax Marathon 70-G3 - Waverly

793 reviews
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List Price: $289.99
$199.99
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REVIEW SNAPSHOT®

by PowerReviews
BritaxMarathon 70-G3 - Waverly
 
4.7

(based on 7 reviews)

100%

of respondents would recommend this to a friend.

Pros

  • Comfortable (6)
  • Durable (6)
  • Easy to adjust (5)
  • Easy to install (4)
  • Safe (4)

Cons

  • Heavy (3)

Best Uses

  • Toddler (6)
  • Infants (4)
    • Reviewer Profile:
    • First time parent (4), Parent of two or more children (3)

Reviewed by 7 customers

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Displaying reviews 1-7

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5.0

Great Seat

By Farm Girl

from West Union, IL

About Me Parent of Two or More Children

Verified Buyer

Pros

  • Comfortable
  • Easy to Adjust
  • Easy to Clean
  • Easy to install
  • Safe
  • Sturdy

Cons

    Best Uses

    • Infants
    • Toddlers

    Comments about Marathon 70-G3 - Waverly:

    We really like this seat! It tilts back slightly so when our toddler falls asleep, her head is cradled instead of falling forward. It is also easy to install.

    Comment on this review

     
    4.0

    Solid construction.

    By New mom

    from Lancaster, Ohio

    About Me First Time Parent

    Verified Buyer

    Pros

    • Comfortable
    • Easy to Adjust
    • Easy to install
    • Stylish
    • Well made

    Cons

    • Heavy

    Best Uses

    • Infants
    • Toddlers

    Comments about Marathon 70-G3 - Waverly:

    I like that it is very sturdy. Hard to put infant into car seat have a Chrysler Town & Country. Are using rear facing. Maybe when we can start using front facing it will be much easier to put infant in.

    Comment on this review

     
    4.0

    Toddler Loves new seat

    By Sunshinegirl

    from Miami Florida

    About Me First Time Parent

    See all my reviews

    Verified Buyer

    Pros

    • Comfortable
    • Easy to Assemble
    • Sturdy

    Cons

    • Heavy

    Best Uses

    • Infants
    • Toddlers

    Comments about Marathon 70-G3 - Waverly:

    This seat was an upgrade from our infant carseat.My little one is 20 months 32 inches and is very comfortable she has room to grow.
    we have a camry and seat takes up same room as infant carseat. Seat is better foward facing as you can take advantage of the latch symstem and tethering straps.
    Rearing facing we use the latch system and seatbelt installation the base is very sturdy but the top of seat is shaky which according to Britax is normal when not using tethering straps, ocerall awesome seat.

    Comment on this review

     
    5.0

    The BEST!!

    By MommyM.

    from Chillicothe, MO

    About Me First Time Parent

    Pros

    • Attractive Design
    • Comfortable
    • Easy to Assemble
    • Sturdy

    Cons

      Best Uses

        Comments about Marathon 70-G3 - Waverly:

        This is by far the best carseat out there, in my opinion. I researched and researched about which carseat brands were the safest, and every time I read things it always mentioned Britax. So I looked them up and only read rave reviews and boy were they right!! I fell in love with this carseat as soon as I opened the box. You can tell just by looking at it that it's high quality and very safe. I couldn't wait to get in in the car. Instructions were easy to read and it was very easy to install. I loved that I was able to latch it in super tight and the seat couldn't move at all. Very safe and looks comfortable. Now I won't ever buy any other brand but Britax!

        Comment on this review

         
        5.0

        Love it!

        By amyparlow

        from Mpls, MN

        About Me Parent of Two or More Children

        See all my reviews

        Verified Buyer

        Pros

        • Easy to Adjust
        • Easy to install
        • Safe
        • Sturdy
        • Stylish

        Cons

          Best Uses

          • Infants
          • Toddlers

          Comments about Marathon 70-G3 - Waverly:

          This is our second marathon, as we loved the one we bought our older son so much we got this for our new babe. We love the durability of the seat and material. It's a breeze to be able to adjust the shoulder harness with one hand, instead of having to rethread the whole system. We change it between cars fairly often, and its super easy to install. Takes maybe 5 minutes. I love the reputation that Britax has, and was happy to get this seat for 25% off. We bought it 4 months earlier because we knew we wanted another one!

          Comment on this review

           
          5.0

          Love this...3rd one we've bought!

          By MB

          from St. Louis, MO

          About Me Parent of Two or More Children

          Verified Buyer

          Pros

          • Comfortable
          • Easy to Adjust
          • Easy to Clean
          • Easy to install
          • Lightweight
          • Safe
          • Sturdy
          • Stylish

          Cons

            Best Uses

            • Toddlers

            Comments about Marathon 70-G3 - Waverly:

            Great product...very comfortable for kids...very high safety rating...easy to install...very easy to take cover off to clean in washing machine.

            This is the 3rd Britax Marathon seat we've bought. So, I guess we're sold!

            Shipped in perfect condition in 2 days...can't ask for more than that. Also came with free cup holder (very handy)...make sure you enter the code to get this.

            I always go to diapers.com first, and usually purchase from here. Great prices & super quick shipping keep me coming back. :)

            Comment on this review

            (1 of 2 customers found this review helpful)

             
            5.0

            So far so good

            By Dignity

            from Fresno, CA

            About Me First Time Parent

            See all my reviews

            Verified Buyer

            Pros

            • Comfortable
            • Easy to Adjust
            • Easy to Clean
            • Safe
            • Sturdy
            • Stylish

            Cons

            • Heavy

            Best Uses

            • Toddlers

            Comments about Marathon 70-G3 - Waverly:

            Daughter just turned one and this is her new forward facing seat. Has a lot of room and it seems very comfy. We have only had it for a week so far and enjoying it. No problems or complications.

            Comment on this review

            Displaying reviews 1-7

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