Britax Marathon G4 Convertible Car Seat

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Regular $289.99
Regular $289.99
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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 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 Perfect for any child, great for my daughter with low tone My youngest daughter has low tone. We moved her into her sister's Marathon. She loved it. We did not know how much she loved it until that marathon expired. We tried to save money since we had to buy two new carseats. We bought something different, something other reviewers said were as safe as the Britax. Well, the alternative was a beast to install and will be much worse when we can't use latch. My daughter hated the cheaper seat and whined throughout trips over 15 minutes long. We were very unhappy parents. We bought her a new Marathon. She loves it and it was a breeze to install. It gives her little body great support and comfort. When we can no longer use latch, the seat belt attachment will be a breeze. 09/20/2014
Rated 4 out of 5 by Comfortable I bought the Britax Marathon Carseat this month and I love it. its easy to instal and adjust the height of the traps. The only thing i'm not too fond of is for some reason, its hard to get the straps to sinch at the same tightness. One is almost always looser than the other. I had the same probelem with the B-safe infant carseat, so maybe it was just operator error. 10/16/2014
Rated 5 out of 5 by Accident safety We were in an accident today. We were hit from the rear and the driver was going about 30-40 mph. She didn't hit her breaks at all. My wife and I had very sore necks and backs. My daughter, however was in perfect condition still eating her snack. This car seat kept her safe and sound. It gives us total peace of mind knowing she is safe. We read another review about an accident and safety and now we are the review. Thank you for building such a safe car seat. Buy this car seat and have peace of mind that your child will be safe. 09/20/2014
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