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Britax Marathon G4.1 Convertible Car Seat - Onyx

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Description
Item # E9LX11A

The Marathon Convertible Car Seat is an excellent choice for getting your family where they need to go safely and comfortably. SafeCell Impact Protection surrounds your child in safety components that work together to protect well beyond the established federal safety standards. And Complete Side Impact Protection shields your little one in a deep protective shell designed to absorb crash forces and protect from debris.

A car seat works best when it provides the right fit so the Marathon comes with the Quick-Adjust, 10-Position Harness and 2-Position Buckle to keep up with your growing child. Installation is made simple with Easy-On / Easy-Off LATCH Connectors that lock into place with an audible click and are easily released with the push of a button. Plush Foam Padding provides premium comfort at every touch point and there are even 3 Recline Positions so your child can relax at the right angle.

The Marathon converts from a rear-facing position (for babies 5-40 lbs.) to a forward-facing position (for children 20-65 lbs.) to keep your child safe and you free from worry wherever the road may take you.

Top 5 Features:

  • SafeCell Impact Protection is an integrated system of safety components that work together to protect your child well beyond the federal safety standards. Including an Impact Absorbing Base, Tether and Harness, an Impact Stabilizing Steel Frame, and Complete Side Impact Protection. SafeCell means your child is surrounded in best-in-class safety.
  • SafeCell Complete Side Impact Protection surrounds your child in a deep protective shell designed to absorb crash forces and shield your child from debris.
  • Quick-Adjust, 10-Position Harness and 2-Position Buckle allows you to easily move the harness upward and buckle outward for a comfortable, secure fit as your child grows.
  • EZ-Buckle System keeps buckles and straps out of your way when placing your child in the car seat.
  • Easy-On / Easy-Off LATCH Connectors lock into place with an audible click and are easily released with the push of a button.
Safe and Secure
  • SafeCell Impact Protection is an integrated system of safety components that work together to protect your child well beyond the federal safety standards. Including an Impact Absorbing Base, Tether and Harness, an Impact Stabilizing Steel Frame, and Complete Side Impact Protection. SafeCell means your child is surrounded in best-in-class safety.
  • SafeCell Complete Side Impact Protection surrounds your child in a deep protective shell designed to absorb crash forces and shield your child from debris.
  • SafeCell Impact Absorbing Base compresses to absorb crash energy and counteract forward movement keeping your child clear from the seat in front of them.
  • SafeCell Impact Stabilizing Steel Frame gives you peace of mind knowing there is strength where you want it most, through the spine of the car seat reducing forward flex and at the connection points to the vehicle.
  • SafeCell Impact Absorbing Tether minimizes seat rotation with a unique two-strap design and slows forward movement with Britax’s patented rows of stitching that “give-way” one at a time in the event of a crash.
  • SafeCell Impact Absorbing Harness slows forward movement in the event of a crash.
Fit and Comfort
  • Quick-Adjust, 10-Position Harness and 2-Position Buckle allows you to easily move the harness upward and buckle outward for a comfortable, secure fit as your child grows.
  • 3 Recline Positions for your child’s comfort and safety.
  • Plush Foam Padding in the cover, shoulder pads and buckle surround your child in comfort at every touch point.
Smart and Simple
  • EZ-Buckle System keeps buckles and straps out of your way when placing your child in the car seat.
  • Easy-Remove Cover for cleaning convenience.
  • Easy-On / Easy-Off LATCH Connectors lock into place with an audible click and are easily released with the push of a button.
  • Tangle-Free, 5-Point Harness prevents the straps from twisting making it easier to load your child into the seat and ensuring a safer ride.

Reviews
Britax Marathon G4.1 Convertible Car Seat - Onyx
$232.00
5 Stars based on 63 Review(s)
Lexi
Lake Charles, LA
5 Stars
I would recommend this item to a friend.

Love this!
August 13, 2015
The pattern is super cute. It's slightly easier to buckle our little one into this seat than it was for our oldest in her Marathon. The easy photos on the side are very helpful as well! Baby girl used to scream every time we would buckle her into the old Marathon seat. She's super happy these days, and super safe! Love it.
Pros:
Ease of use. Easy to install and uninstall. Cute!

Mia
California
5 Stars
I would recommend this item to a friend.

Safe and comfortable
June 26, 2015
Easy to install I have two britax car seats in my Honda pilot. Fabric much easier to clean and breathable from my son who is constantly hot
Cons:
c

Lessie
Spokane, wa
5 Stars
I would recommend this item to a friend.

Great car seat
June 24, 2015
This is the second one we bought. Easy to install and safety rating makes this worth it's price! Kiddos are comfortable in it too.

Cari
Dallas, Texas
5 Stars
I would recommend this item to a friend.

Love this car seat!
June 17, 2015
We transitioned to this convertible car seat and our 11 month old loves it! We only wish we had purchased it sooner.

nicki blackhurst
Arizona
5 Stars
I would recommend this item to a friend.

best car seats
June 12, 2015
I love this brand. This is my second Britax Marathon and I would buy it again in a heartbeat!

Lindi Conner
Beaumont, Texas
5 Stars
I would recommend this item to a friend.

Britax Marathon
May 30, 2015
Great car seat. We got it for our air plane.
Pros:
Easy to install
Cons:
It's heavy
Best Uses:
Great for front facing

Debra
Longmont, CO
5 Stars
I would recommend this item to a friend.

Great purchase
April 26, 2015
Fast shipping and good price on a great and hard to find car seat. Very satisfied!

Wes
Paris, KY
5 Stars
I would recommend this item to a friend.

Great Seat
April 11, 2015
Great car seat like you would expect from Britax

Dorothy
Hickory Hills Il.
5 Stars
I would recommend this item to a friend.

Informative.
April 8, 2015
This item was a gift. Seems the recipient was very pleased.

Hayley
Kansas City, MO
5 Stars
I would recommend this item to a friend.

Perfecto
April 8, 2015
Extremely easy to install. I don't have latches, so I use the seatbelt. I was afraid that it wouldn't be very tight but it doesn't move a millimeter! So happy with this purchase!

Gretchen
Magnolia, TX
5 Stars
I would recommend this item to a friend.

Great Car Seat
April 7, 2015
Really like like this car seat. Easy to install, comfortable for my daughter, and easy to get her in and out. Pretty affordable too for a car seat with such good safety record.
Pros:
Safety Comfort Ease

Priscilla Dupre
San Antonio, Texad
5 Stars
I would recommend this item to a friend.

Britax Marathon
April 3, 2015
Great color and comfy. Very secure!

Andra
Birmingham, AL
5 Stars
I would recommend this item to a friend.

excellent car seat at good price and easy to install
April 2, 2015
I have not been using this long, but my granddaughter loves it and it was very easy to install. I studied reviews, and spoke to my daughter who has a Britex car seat already, and Britex seems to be the best. I received my order even sooner than expected, and I found no damage or missing pieces. Very please with the shopping experience.

Rachel
United States
5 Stars
I would recommend this item to a friend.

Great purchase
March 30, 2015
Easy to install. Love that you can adjust the harness without having to uninstall the seat when it is forward-facing!

Sarah
Park City, UT
5 Stars
I would recommend this item to a friend.

Comfortable and Safe
March 29, 2015
I used a Britax Roundabout with my first, but it had expired by the time my second was ready to be forward facing, so after some research I decided to go with the Marathon this time, which has many great new features. I like how easy it is to adjust the height of the straps and the buckle position, without having to take things apart at the back. An improvement in the latch connection, is that each side has its own strap, rather than one belt that went from one side to the other, like my old seat. It makes it easier to tighten the seat, because you're not fighting from side to side and the seat is way more secure. The sides of the seat have more of a wing shape for the extra side impact protection, and I was worried he would be annoyed that he couldn't see out so well, but he doesn't seem to mind at all (he's a bigger boy though, so he can see fairly well). Even if this was a problem, I'm sure any baby would get used to the restricted view, and the added safety is more important. The steel frame makes the seat weighty, but not as much as I thought it might, and it's still manageable. The recline is great, and he sleeps comfortably, without his head slumping forward. The harness covers also give him more support, and I haven't had problems with the straps twisting. The Velcro to hold the straps aside is great. I did prefer the soft cloth on the older seat, but they all seem to be more like this these days, and this kiwi/lime color seems smoother than most. I got the cup holder (sold separately) and it hooks on easily and works as it should. Albee baby had a great price on this seat and they shipped it the next day. It arrived on time and in perfect condition. I am more than pleased with this seat, it's very nice looking, comfortable and most importantly, is safe.
Best Uses:
.

Brittney
Maple Falls, WA
5 Stars
I would recommend this item to a friend.

LOVE
March 26, 2015
Fast shipping and I found the carseat I wanted on here and it was cheaper then anyone else was selling it. Would definitely purchase from here again!

mommyof4
Peoria, AZ
5 Stars
I would recommend this item to a friend.

Excellent Quality
March 23, 2015
The quality of Britax always outshines competitors, this seat is made exceptionally. Love the new features (the LATCH systems holding slots, impact on the base, reclining positions, extra padding built in, padding around the clips so it doesn't pinch, easily understood and visually appealing stickers on the side explaining weight/height limits and rear/forward facing requirements.) Shipping was timely, in the original box. The product is adorable with the giraffes, my personal favorite. Only one complaint, not really even a complaint, just a comment: the strap guards on the top keep twisting and because they are velcro can be sharp. Every time I put the baby in the seat they spin and I have to face them down or run the risk of scratching little ones face. LOVE it, not to mention it's $60 off. Thank you ALBEE BABY
Best Uses:
newborn, baby, toddler, rearfacing, forwardfacing

christina
California
5 Stars
I would recommend this item to a friend.

love it!!
March 20, 2015
My daughter loves It! It's super comft and once installed it's easy to use.

casi
preston, ga
5 Stars
I would recommend this item to a friend.

Wonderful car seat
March 18, 2015
We love the Britax Marathon G4.1. It is very comfortable to our 19 month old & easy to latch into car & outstanding safety features. We also really like that it is reclining. Overall great car seat!

Valencia
Royal Oak, MI
5 Stars
I would recommend this item to a friend.

Money well spent!
March 18, 2015
As always Britax never disappoints,love the design and It makes me feel better knowing that my child is secure in this car seat! Much easier to install than some of the other Britax models I have had and my car seat arrived before expected and the price was amazing compared to other places I looked into for the exact same one.Very happy with this purchase and I will definetely be ordering from you guys again and also refer others!
Pros:
Rear and forward facing, 5 point harness for safety,enough comfort and room for your growing child,anchors for rear and forward facing
Cons:
A little on the large side if you have a car with a tight backseat

anastasia teper
brooklyn, new york
5 Stars
I would recommend this item to a friend.

Good purchase
March 3, 2015
Great seat, my son feel very safe and comfortable in it.

Charleen Black
United States
3 Stars
I would recommend this item to a friend.

Great Product..Bad Shipping
February 28, 2015
I absolutely love this carseat. It's so easy to put in the car and get my daughter in and out. The only reason why I gave it 3 stars is because of the shipping. I heard the UPS man pull up and looked out the window and watched him put together the ripped box! The box is odd shaped as it is but when I got it..the box was falling apart. Thankfully the car seat was ok. Not gonna lie..I was worried it had been damaged.

Michelle C
Apex, North Carolina
5 Stars
I would recommend this item to a friend.

Great Carseat!
February 15, 2015
After several people suggesting I purchase a convertible carseat by Britax, I went with the Marathon and I really like it. My son is 13m, but got it when he was a little over 12m and it fits him great and I can tell he likes it. I also turned him around already and he really likes that and Mommy and Daddy do as well. Albee Baby is a great place to buy necessary items and I will definitely use it for other items I'm in need of. They shipped my carseat so fast and I had free shipping and awesome prices! I am very pleased.
Pros:
Velcro spots on the sides to place straps when the seat is not in use. Really safe ratings Headrest moves up and down to adjust straps.
Cons:
Seat cover removes, but it cannot be washed in a washing machine. We haven't tried yet but maybe we'll attempt the hand wash cycle. Otherwise, it should be soaked and air dried.

Breanna
Fresno, California
5 Stars
I would recommend this item to a friend.

Perfect Car Seat
February 13, 2015
I did lots of research on the safest car seat for my little one. This car seat was the best one on the market with the best safety ratings. After doing price comparisons, Albee Baby beat the competition by quite a bit of money. And I was not at all disappointed with the car seat when it arrived. My daughter is thrilled to be front facing and so comfortable!

Victor
Las Vegas, Nevada
5 Stars
I would recommend this item to a friend.

Perfect car seat!
February 11, 2015
I wish we would've bought this car seat from the beginning! It is very safe, secure, and easy to install. We now have 2 britax marathon car seats and we will definitely recommend it to everyone!

White
Atlanta, Georgia
5 Stars
I would recommend this item to a friend.

Thumbs Up!!!
January 29, 2015
I ordered it on a Monday and I received it by Wednesday. I was impressed by the fast delivery. The car seat is exceptional!!! I'm a true Britax fan.

Greg
Toledo Ohio
5 Stars
I would recommend this item to a friend.

Great Items
December 31, 2014
My experience with AlbeeBaby was fantastic! They kept me up dated with the back order situation, when the items shipped and followed through until we received the items at our door step. The best thing I liked in any email I sent it was answered immediately and I felt the person or persons on the other side really cared! Thank you for great service and follow through. Happy New Year!
Best Uses:
Car seat for our infant

mbg2010
Gadsden, AL
5 Stars
I would recommend this item to a friend.

Great Carseat
December 30, 2014
We love our Britax Marathon carseat! We chose this car seat because of the safety ratings.
Pros:
Easy to install keeps baby's head from falling down straps never tangle

KE
Houston
5 Stars
I would recommend this item to a friend.

Great Car Seat
December 10, 2014
This is a great car seat! Easy to use and excellent quality.

Sarah
Ellicott City, MD
5 Stars
I would recommend this item to a friend.

great car seat!
December 3, 2014
My sister-in-law bought this seat for my niece and loved it so I knew I would get one for my son as well. It consistently gets great reviews for safety.

Katie
Texas
5 Stars
I would recommend this item to a friend.

Great product
November 30, 2014
I love the Britax Marathon. Fast shipping and item came as described. The only negative would be that the shipping box was all smashed when we got it, and there was no inner box to protect item, however, it still was not damaged.
Pros:
Safe, reliable and comfortable, airline rated.
Cons:
None
Best Uses:
5 months old and up.

Susan Zimmerman
Halifax Pa
5 Stars
I would recommend this item to a friend.

Purchased fir our granddaughter.
November 29, 2014
Our daughter and son in law purchased one for their daughter. They are very pleased with theirs so we decided to get one.

Leslie Cardio
New York
5 Stars
I would recommend this item to a friend.

Only the Best for My Grand kids
November 19, 2014
This car seat is the only car seat I will buy for my 4 grand children! Safety first, and this seat is rated very high on the list! Very comfortable and super durable.

Melody
Blaine, WA
5 Stars
I would recommend this item to a friend.

love this carseat, best quality.
November 17, 2014
love this carseat, best quality.

Rachael
Mississippi
5 Stars
I would recommend this item to a friend.

Great seat!
October 18, 2014
Perfect seat for what we needed. Researched ALOT to find perfect fit for us and we are very satisfied with purchase. The buckle is low and a bit hard to buckle but seat is high quality and top rated so a little extra work worth it :) We have a Yukon and VW Jetta and size of the seat perfect for both. My hubby 6'3 and has plenty of room with seat behind driver seat in both vehicles. Seat a bit high in cost but well worth it, especially since you can use up to 65#.

Jouilani
SLC, UT
5 Stars
I would recommend this item to a friend.

Great Car Seat!!
September 24, 2014
We love this car seat and my daughter sleeps in it very comfortably! Easy to clean and put her in!
Pros:
Daughter sleeps in the car comfortably!

amanda wilson
tennessee
5 Stars
I would recommend this item to a friend.

love the carseat
August 24, 2014
love these car seats they are great quality will never regret this purchase :)

Kendra
Columbus, Ohio
5 Stars
I would recommend this item to a friend.

Amazing !!
August 17, 2014
So easy to use, soft and feels comfortable and you can just tell it's a very well made seat. It was shipped almost immediately and I had it within 3 days of ordering.

nicole
maryville,Tennessee
5 Stars
I would recommend this item to a friend.

britax marathon g4
August 17, 2014
It is an awesome car seat! Its so comfy, and has tons of cushion. Its durability is amazing and is very safe conscious! Best purchase I have made!!
Pros:
Very durable,can be locked.into place,has amazing cushion!

Kelly Waggoner
Edmond, OK
5 Stars
I would recommend this item to a friend.

Love Britax
August 15, 2014
I love Britax products from the infant carrier & stroller to the car seat. So easy to install and I love the safety features.
Pros:
latch system install, safety features, color options
Cons:
I wish it had a build in cup holder instead of buying one separately
Best Uses:
I love the rear facing and forward facing features and how easy it is to install using the latch system!

Ana-Kaye
Ft Lauderdale, Florida
5 Stars
I would recommend this item to a friend.

Product use
August 13, 2014
this is one of the best and safest carseats ever and for such a reasonable price definitely a must

Apes
Tucson, az
5 Stars
I would recommend this item to a friend.

Perfect for my big 3 month old
August 8, 2014
My son is very long for his age thus far and I needed a car seat to grow with him. This one is perfect and has cushion so it wont be hard on his bum.

Charlie
Georgia
5 Stars
I would recommend this item to a friend.

I understand why it's the safest.......but
August 8, 2014
Yes...it's number one in safety. That is what most people want .An army tank would be the safest car also.... BUT... It is big and bulky ( the tank and the car seat)The straps are real wide and real thick. Everything about it "says" --- no "yells" SAFETY. I hope you understand what I mean. So how do you rate something like this? I have no idea. I wouldn't want to travel in an army tank.....but I would want to be safe. I mean the car seat is carrying the world's most precious cargo.....so...uh....5 stars?
Pros:
"Throw up" cleans up easily
Cons:
Almost......Almost ......built too strong if you understood my comments above.
Best Uses:
PROTECTION PLUS

Grammy Shelley
Michigan
5 Stars
I would recommend this item to a friend.

Exceptional Buy!
August 3, 2014
This carseat was easy to install and use. This grandma was able to install it by myself in my minivan. This clips were attached easily. The harness is wonderful! NO taking straps out and NO rethreading! THE HARNESS ADJUSTS WITH THE SQUEEZE OF THE BUTTON! Which is nice because my 2 grandsons are not the same height. What a wonderful feature! The materials are soft. The cushioning is nice. The only drawback is the versa tether. It needs to be anchored to a tether anchor or a fixed location in the vehicle that is bolted to the floor. I do not have the anchor but I understand you can ask for one from the vehicle manufacturer. I happen to not have my rear seat in so I had a place to anchor. I think this would be an easy fix but might be something to check out before purchasing. I have only used a few times so far but am very happy with the seat!
Pros:
Easy to install and adjust harness.
Cons:
Tether anchor is not in all vehicles.

Mom
Wilmington NC
4 Stars
I would recommend this item to a friend.

Mostly pleased
August 2, 2014
Ordered this item due to safety rating and my 11 month old has outgrown his infant carrier and longs to sit up more
Pros:
Convertible so can be used rear facing and forward facing. Reclines (3positions). Soft fabric.
Cons:
Difficult to tether as rear facing. Rubber pads on belt straps get in the way.

MontanaJ
United States
4 Stars
I would recommend this item to a friend.

I love Britax!
July 28, 2014
This seat is for my second child. I have the same seat for my first child and even after extensive research and pondering, I decided to go with Britax again. This seat is not bulky, is easily attached to the car forward and rear facing, and the washable materials are fairly easy to remove. I wish the straps could be easily removed for cleaning as I let my kids eat in the car and they get quite messy at times. I also find it troublesome to adjust the straps during times of the year where my kids might or might not wear a thick winter jacket. Aside from that, I find that the buckles are easy to open, even with one hand, compared to the Evenflo care seats (you definitely need two hands and even then it's a struggle) I have in our secondary car. Overall a great seat from a trusted brand and I wouldn't purchase anything different for my kids.
Pros:
Buckles easy to open Washable materials are easy to remove and put back on
Cons:
Straps can't be easily removed for cleaning It's a struggle to adjust the straps, so when doing so frequently it's a hassle
Best Uses:
Small backseat

malori
welsh, louisiana
5 Stars
I would recommend this item to a friend.

Love it
July 26, 2014
Love it and so does my baby girl!!! I had the infant seat before and we upgraded to this. I couldn't ask for a better product. It's very safe and cumfy.

Amy
Jacksonville, NC
5 Stars
I would recommend this item to a friend.

Britax pink giraffe car seat
July 25, 2014
This is a great car seat. My daughter (14 months) seems very comfortable in it and can fall asleep with no problem. The fabric is great for wiping clean and drys fast. The print is also very cute in person.

Tara
Dallas, Tx
5 Stars
I would recommend this item to a friend.

Super happy
July 19, 2014
This car seat is plush. My 8 month old son no longer cries when he has to go in his car seat! I think he likes that he's sitting up more- like a big boy. He can fall asleep easily in it too. This car seat will last for a long time. And if you're into fashion it couldn't be cuter. 2 baby thumbs up!

Marci
Kentucky
5 Stars
I would recommend this item to a friend.

Awesome!!!
July 19, 2014
Love it! Love the Velcro on the sides to hold the straps in place when not in use. Keeps them from sliding under little ones butt.




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