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Britax Marathon G4 Convertible Car Seat

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We love our products too! But unfortunately you can only purchase 0 of this product. Please try again!
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This Marathon convertible car seat features the Harness Ultra Guard System (HUGS) to resist forward movement upon impact, keeping your child safe and sound.

Product Features:

  • Quick-adjust, 5-point harness
  • Energy-absorbing Versa-Tether, foam padding, steel bars and SafeCell technology
  • Two-position buckle and recline
  • Push-button release and built-in lock-offs

Product Details:

  • Includes: car seat, removable cover & infant body pillow
  • Maximum weight capacity:
    • Rear-facing: for children 5 to 40 lbs.
    • Forward-facing: for children 20 to 65 lbs.
  • Conforms to all applicable Federal Motor Vehicle Standards
  • Manufacturer's 1-year limited warranty
  • Model numbers:
    • Cowmooflage: E9LQ91Q
    • Kiwi: E9LQ93G
    • Onyx: E9LQ91A
    • Pink Giraffe: E9LQ95K

Promotional offers available online at may vary from those offered in Kohl's stores.

Our hassle-free return policy means worry-free shopping.

  • Return any item, anytime, for any reason.
  • No receipt? No problem. We'll take care of you.
  • Yes, you can return it in store (even if you bought it online!).

View our full return policy here.


Rated 5 out of 5 by We have 3 of these seats and love them We purchased this when our son outgrew his Keyfit30 baby seat. Easy for the husband and grandparents to install correctly the first time with little effort. It's now almost 3 years later and it has been well worth the money. Our son is tall and very slim and this has consistently fit him well. We are nowhere near the weight limit...he's 40 pounds at 5 years old. Sadly, he is approaching the height limit....So we probably won't get that extra year of use I was hoping and planning for. Why must they grow bigger? 11/10/2014
Rated 3 out of 5 by Doesn't hold up well I bought two of these coming up on two years ago (didn't use them right away) because of the safety ratings. I did not realize that a high safety rating doesn't necessarily mean high quality. About a years worth of use, all of the straps have frayed and needed replacement. The cover has also frayed but I've yet to replace it due to the high cost. I can only find replacements on By the time I replace all the parts it would probably be better to just buy a new car seat. I spent more on this seat thinking my next child could also use it but that is looking doubtful. If you have to have a britax (as I thought I did) then go with the roundabout (cheaper replacement parts). 10/06/2014
Rated 5 out of 5 by Easy to install, easy to use We just bought our second Britax Marathon convertible car seat for my husband's car. We love the safety ratings and ease of use of this car seat! We recommend Britax products to everyone. 11/13/2014
Rated 5 out of 5 by Great seat I just bought it today and it's great. I bought 2 as we have twins. 11/15/2014
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