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  1. #1

    Britax Marathon 70G3

    My 6 year old is small. 40 pounds, 46 inches. I’d like to keep her in a 5 point harness for as long as possible but the shoulder straps on her Britax Marathon 70-G3 are now at the highest height and are below her shoulder level. Is there a way to raise these even more? Am I missing something or has she just outgrown the seat.

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  3. #2
    CPST and ketchup snob ketchupqueen's Avatar
    Join Date
    Oct 2008
    L.A. area

    Re: Britax Marathon 70G3

    Hi! If you've loosened the straps, raised it up and it won't go higher, it's probably outgrown. 6 is longer than many kids last in that seat. If she's got an average to long torso I'm not terribly surprised at a child that size outgrowing the seat.

    At 6, many/most kids are booster-ready, but you could also get a taller harnessed seat if you want. The seat you have has 16.5-16.75" top slots so any of the seats with at least an 18.5" top harness height will definitely get you to 7 or 8, when pretty much all typically developing kids are booster-ready.
    CPST and Mom to Emma, 15, Bridget, 13, Maggie, 11, Katie Sue, 6, Jimmy, born May 2019,
    and Becky, waiting for us as part of our eternal family.
    Our '02 Odyssey, car seats, and seatbelts saved our lives. Now riding in a '13 Odyssey!

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