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Color Name: Onyx
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Britax Marathon Convertible Car Seat

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Other products by Britax USA
4.7 out of 5 stars See all reviews (290 customer reviews)

Price:$279.99
Sale:$239.99
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Proud of your school? Sport your favorite college colors and logos with Britax Collegiate Marathon car seats sold by Toddler Teams.

Frequently Bought Together

Color Name: Onyx
Britax Marathon Convertible Car Seat Onyx + Vulli Sophie the Giraffe Teether, Brown/ White + RaZ-Berry Silicone Teether
Price For All Three: $264.18

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What Do Customers Ultimately Buy After Viewing This Item?

Britax Marathon Convertible Car Seat
50% buy the item featured on this page:
Britax Marathon Convertible Car Seat 4.7 out of 5 stars (290)
$219.99 - $279.99
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$175.99
Britax Roundabout 50 Convertible Car Seat - Onyx
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Britax Roundabout 50 Convertible Car Seat - Onyx 5.0 out of 5 stars (1)
$199.99
Britax Decathlon Convertible Car Seat Onyx
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Britax Decathlon Convertible Car Seat Onyx 4.0 out of 5 stars (69)
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Product Features

Color Name: Onyx
  • 5 point harness with patented Floating HUGS system and 4 harness heights
  • Built-in lock-off clips, Versa-Tether & Safe Guard LATCH Connectors
  • EPS and Comfort Foam for safety and comfort
  • Rear- and forward-facing recline
  • Rear facing: 5 to 35 pounds. Forward facing: At least 1 year old and 20 to 65 pounds

Buy This Product and Related Accessories

Britax Marathon Convertible Car Seat Onyx

Britax Marathon Convertible Car Seat Onyx

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Britax Marathon Convertible Car Seat Cover Set - Granite
Britax Marathon Convertible Car Seat Cover Set - Granite

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Britax Marathon Convertible Car Seat Cover Set - New Denim
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Britax Marathon Convertible Car Seat Cover Set - Crocodile
Britax Marathon Convertible Car Seat Cover Set - Crocodile

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Britax Marathon Convertible Car Seat Cover Set - Mariposa

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Product Details

  • Product Dimensions: 22 x 20 x 19 inches ; 20.9 pounds
  • Shipping Weight: 20.9 pounds (View shipping rates and policies)
  • Shipping: Currently, item can be shipped only within the U.S. and to APO/FPO addresses. For APO/FPO shipments, please check with the manufacturer regarding warranty and support issues.
  • Shipping Advisory: This item must be shipped separately from other items in your order. Additional shipping charges will not apply.
  • ASIN: B000F1QL20
  • Item model number: E9L0669
  • Amazon.com Sales Rank: #580 in Baby (See Bestsellers in Baby)

    Popular in this category: (What's this?)

    #13 in  Baby > Car Seats & Accessories > Car Seats > Convertible
  • Average Customer Review: 4.7 out of 5 stars See all reviews (290 customer reviews)
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Product Description

Color Name: Onyx
Amazon.com Product Description
The Marathon from Britax is a durable, convertible car seat that helps keep your child safe and secure in the car. Ideal for parents seeking premium comfort and a higher, forward-facing harnessed weight capacity, the Marathon fits children rear facing from five to 35 pounds and children forward facing from at least one year old and 20 pounds, up to 65 pounds. Both positions can accommodate a standing height up to 49 inches.

The Britax Marathon offers:
  • HUGS system for maximum safety.
  • Easy-to-use push-button release LATCH connectors.
  • Five-point harness for a secure fit.


The Marathon's LATCH system is easy to adjust. (Crocodile color shown.) View larger.
An Easy-to-Adjust Design That Grows with Your Baby
The Marathon boasts an easy-to-manage design and enhanced features that can be safely used in cars with or without the LATCH (Lower Anchors and Tethers for Children) system. For one, it provides built-in lock-off clips that keep the seat tightly in place when using only traditional seatbelts at installation. Secondly, a simple handle pull allows the car seat base to be reclined when rear-facing, and soft padding and a stain resistant, removable and washable cover keep things cozy and stress-free.

In addition, the five-point harness system is made with strong polyester webbing, has tangle free straps, and fits snugly over your baby's shoulders, collarbone and hips to provide a secure fit. There are also four adjustable height positions so the seat can truly grow with your baby. Finally, the one-hand recline adjustment allows for proper positioning, which helps ensure your child's safety.

HUGS for Optimum Safety and Support
When it comes to safety, the Marathon truly delivers. First, the patented floating HUGS (Harness Ultra Guard) system exceeds U.S. safety standards by reducing forward head movement as it gently cushions the neck and chest with soft padding--a feature that's particularly important both in the case of an accident and during nap time. In addition, this system better distributes the webbing loads, reducing head movement and minimizing harness irritation on baby's neck in case of an impact. HUGS also reduces the chance of improperly positioning the chest clip.



Versa-Tether for Additional Security
Marathon also offers Britax's patented Versa-Tether, an anchor aid that provides additional security in the forward facing position for children weighing more than 50 pounds. The Versa-Tether fastens the top of the car seat to factory installed automobile anchor points, minimizing the possibility of a head injury in the event of impact. This system also allows for rear-facing tethering to help keep the seat consistently stable.

Weighing 16.5 pounds, and measuring 19.5 x 27.5 x 25.5 inches (WxHxD), the Marathon is also Federal Motor Vehicle Safety Standard (FMVSS) 213 compliant, meaning it adheres to a strict set of quality control and safety standards, and is approved for airline travel. The Marathon comes with a 1-year limited warranty.

The Marathon is also available in the following colors: Mariposa, Tan Swirl, Crocodile, Mossy Oak, All Star Blue, New Denim, Cowmooflage, and Granite.


Product Description
Keep little ones safe and comfortable during trips with this quality car seat that can be adjusted to two positions (rear- and forward-facing) depending on your child's development.

Features:

  • Rear-facing position holds up to 33 pounds; forward-facing holds up to 65 pounds
  • Patented Versa-Tether
  • Comfortably fits larger, older children
  • Removable, washable fabric cover
  • Patented HUGS system
  • Belly pad for comfort and protection
  • Built-in lock-offs
  • Sculpted base for a perfect fit
  • Flexible buckle LATCH system
  • Comfort foam and EPS protective foam
  • Tangle-free polyester 5-point harness
  • Belt holders keep belts aside for boarding
  • One hand recline adjustment


See all Product Description

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Customer Reviews

290 Reviews
5 star:
 (233)
4 star:
 (40)
3 star:
 (9)
2 star:
 (6)
1 star:
 (2)
 
 
 
 
 
Average Customer Review
4.7 out of 5 stars (290 customer reviews)
 
 
 
 
Share your thoughts with other customers:
Most Helpful Customer Reviews

 
94 of 94 people found the following review helpful:
4.0 out of 5 stars Great, but not perfect., March 27, 2007
Don't get me wrong....I would own nothing other than Britax seats at this point. We have 4 children and we've tried various models. We've donated the others to Goodwill. We currently own 5 Britax car seats for 4 children. We have 2 Regents, 1 Parkway(used as a spare), 1 Marathon, and 1 Roundabout. I feel as though I'm a walking advertisement for Britax and we've been accused of being uptight about car seats.

As far as I'm concerned, there are three main features that we look for in a car seat:

1. Does it fit securely in the vehicle?

Forward facing, this seat is awesome. We don't have the latch system in our van, so we never had the opportunity to use the latch belts although I'm sure they work fine. We use the shoulder belt and we've never seen any other seat get as secure as our seat. When we try to move the seat side to side, the van moves instead. The beauty of the system is that after you've tightened the lap part of the belt down as far as you can, you then slide the shoulder part of the belt into a slot that latches down on the side of the seat. Once you've done this, the belt doesn't develop any slack. Then for good measure, you attach the tether to the underside of the rear of the seat (or a tether hook in some cars). This seat doesn't move after that.

Rear facing, the seat could be improved. This is why the seat doesn't get 5 stars from me. The side lock down mechanism is tightened more by the thickness of the belt. Unfortunately, it can pop open without much pressure. (As a side note, the lockdown on the side of our older Roundabout works great. It is a different design. I'm not sure if Britax thought they were improving and have changed the design or if they have a different lockdown on this seat.) The annoying thing about this is that you have to continuously check to see if it has released.

2. Condition of the straps is important. I haven't seen one manufacturer compare to the quality of the straps. The shoulder straps are thick and wide. They don't fold up on themselves or get tangled. They are also wide across your child's shoulders.

3. Child's comfort. The side guards around the head are great for when they are getting tired and the safety foam is the same as you would find in bike helmets.

Overall, the seat is great. If I could have given it 4.5 stars, I would have. The rear facing problem was minor to us because we could use our Roundabout rear facing, but for someone who needs to use it rear facing for a while, it might be more of a problem. I'm hoping Britax improves that one thing, but overall, this seat is highly recommended by me.
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74 of 77 people found the following review helpful:
5.0 out of 5 stars A Miracle!, August 16, 2007
By M. Bostic (West Virginia) - See all my reviews
(REAL NAME)   
This car seat was a life saver!

Our daughter is almost 4 months now and cried everytime we placed her in her infant seat, except on the day home from the hospital. We couldn't drive down the road without listening to screams - the only time we went anywhere was if she was asleep and often she woke up the minute we put her in her seat. My 8 year old and I would both sit in the back seat with her, it didn't matter. I read the reviews on this seat so we went to 2 different stores and placed her in the demo. She was fine. My mother offered to purchase it for us so we got it.

Sketptical?
I was skeptical, so I first took her for a 5 minute ride - no crying. The next day I chanced 15 minutes - still no crying. The third day we went to my mother's - a 40 minute drive each way. Within a week we were willing to try her on a 3 hour trip. She did great!

I think the key for us was my daughter can see out and doesn't feel confined like the infant seat. She spends most trips gazing out the window and quietly sucking her thumb.

Size
I've read people complain about the size, but it fits fine in our Toyota Prius and our Subaru Outback. In fact it actually allows the front passanger seat to be further back than our previous car seat with a base (Graco Snugride).

Buy Two!
We've had the seat now for 3 weeks and no crying! My husband asks me everyday "How was she in the car" and everyday I say "GREAT!" We bought a second one for the other car.

Installation
This is the easiest car seat I have ever installed, we use the latch system in the Prius and in my mother's car. IT is so much easier than the latch with the Graco seat. Using latch it takes only minutes to go from one car to another. In the Subaru we use the regular shoulder/seat belt (it's 8 years old so latch wasn't available). Which I still like better than the Graco.

It is quite expensive, but to us well worth it. If you're still reading this then you want this seat! (It doesn't feed hungry babies, so they may still fuss.)

A year late...

My daughter is 15 months now and the seat is still wonderful! We now have the seat facing forward and we still love this car seat.
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36 of 37 people found the following review helpful:
5.0 out of 5 stars Amazing! , March 1, 2005
By Mads (Oceanside, CA) - See all my reviews
This seat is really great, I can't say enough good things about it.

First of all, my 7 month old son fits perfectly and rides so comfortably in it. He outgrew his carrier, and I wanted a safe, and snuggly seat for him to move into. He not only loves the look of the cow print (he smiles and laughs at himself in the Baby In Sight mirror!), but the fabric is so plush and soft. If you're going to get a top of the line model, I figure take advantage of the fun prints that are offered! It's great because it is so soft and lush, but he doesn't sweat in it at all, and he's a big sweater! The BRU exclusive fabric, Racer, looks chic, but is very rough to the touch down the center stripe.

Also, this seat was almost too easy to install. It was so simple, I felt like that couldn't possibly be "it". But it was! The LATCH connectors have clicks similar to seatbelts, and easy to pull straps - this was nothing like trying to install the base to my Graco Snugride. I'm confident that the seat is installed properly, and it's not difficult to remove and install quick in another car, if need be. The tether anchor was also much easier to hook up than I anticipated. It's a great safety feature that only Britax has. The seat is large, but does not take up the entire back seat, still allowing two other passengers to ride back there.

While the carrier was great for the early months, this is the absolute best for older babies, and kids. I would recommend Sleepy Wings or extra head support for newborns, however.

The Marathon is the way to go for durability, safety, luxury and longevity for your child. I guarantee that this is worth the extra money! I am forever a Britax customer!
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Most Recent Customer Reviews

5.0 out of 5 stars Our Favorite Carseat
This is one of three Marathons we have for two kids and two cars, and we love it. It is easy to install/uninstall and adjust the straps, seemingly comfortable for the kiddos, and... Read more
Published 13 days ago by EJR

5.0 out of 5 stars It is worth it
I really couldn't see how a Britax seat could be any better than the rest but while I was researching and researching seats, all signs pointed to a Britax. Read more
Published 20 days ago by Georgia

5.0 out of 5 stars Great from Sedan to Airplane
We've owned this car seat since my 2 yr old daughter was born, and have loved it all along. I would say that it's actually become more comfortable for sleeping as she's gotten... Read more
Published 25 days ago by Rebecca L. Householder

4.0 out of 5 stars Highly recommended!
I love this carseat. We have a different one for our second car, and I wish I would've gotten a Britax instead of the one we got. Read more
Published 27 days ago by Cynthia A. Johnson

4.0 out of 5 stars Not as impressed as I thought I'd be
I'm not completely disappointed, but I'd thought I'd be more impressed. I read lots of reviews, and decided to spend the extra money and go with this one. Read more
Published 1 month ago by T. Underhill

4.0 out of 5 stars Picky Mom Mostly Satisfied
I spent a ridiculous amount of time researching a car seat for my 5 month old baby boy. He was quickly outgrowing his newborn carrier and only the best replacement would do for... Read more
Published 1 month ago by Ophelia B.

4.0 out of 5 stars Good car seat
I bought two of these car seats based on the feedback and research I had done on line. They were only slightly more expensive than the First Years seat, and they looked better so... Read more
Published 1 month ago by Natalie Limneos

5.0 out of 5 stars The Standard By Which All Others are Measured
I guess about the best thing I can say about the Marathon is that I feel at ease when my daughter is in it. Read more
Published 1 month ago by Jimmy Bracken

5.0 out of 5 stars Britax Marathon - couldn't be better!
The safety ratings are excellent, and I don't think it could be better. It seems quite comfortable, and we are glad that it should last our daughter several years. Read more
Published 1 month ago by L. Smolinski

5.0 out of 5 stars Britax always satisfies!
Great car seat! The new denim color is very nice. It's not too bulky in size and it's perfect for the toddler and preschool aged kids. Read more
Published 1 month ago by CAAD

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Customer Discussions

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This product's forum (10 discussions)
  Discussion Replies Latest Post
Britax Marathon Tan with Swirl 1 23 days ago
Car seat color 0 29 days ago
Britax Marathon for a newborn? 10 2 months ago
decathalon vs marathon 1 2 months ago
Britax Marathon vs. Graco Nautilus???? 5 February 2009
roundabout vs. marathon HELP!!! 10 December 2008
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