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Britax Marathon ClickTight Convertible Car Seat - Rio

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Item # E1A386N


Rear-facing: 5-40 lbs
Forward-facing: 20-65 lbs
Height capacity: 49 inches
Dimensions (in): 18.5 W x 23.5 H x 23 D

What's Included: Car Seat Only


ClickTight Installation System

Easy, secure installation in 3 steps:
1: Turn the ClickTight Release
2: Thread and connect the vehicle seat belt
3: Click it closed!

Impact Absorbing Base

Compresses to absorb crash energy and counteract forward movement, keeping your child clear from the seat in front of them.

Side Impact Protection

Complete Side Impact Protection surrounds your child in a deep protective shell designed to absorb crash forces and shield your child from debris.

7-Position Recline

Adjusts for your child's comfort while ensuring the best installation angle for your vehicle.

The Marathon ClickTight Convertible Car Seat is an excellent choice for getting your family where they need to go safely, comfortably and with so much ease. With the ClickTight Installation System, now everyone can install the car seat securely and confidently by just buckling the seat belt. You simply open the front of the car seat, buckle the seat belt across the belt path and then click the seat shut for a proper installation every time. 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 ClickTight comes with the Quick-Adjust, 12-Postion Harness and 2-Position Buckle to keep up with your growing child. Plush Foam Padding provides premium comfort at every touch point and there are even 7 recline positions with an Automatic Level Indicator so you can adjust to ensure the best installation angle for your vehicle.

The Marathon ClickTight converts from a rear-facing position (for babies 5-40 lbs.) to a forward-facing position (for children 20-65 lbs.) and has been carefully designed to keep your child safe and you free from worry along the way. So click them in, give them a kiss and go with confidence.

Product Features

ClickTight Installation System ensures that everyone can install the car seat securely and confidently by just buckling the seat belt.

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 potential seat rotation with our unique two-strap design and slows forward movement with our patented rows of stitching that ?give-way? one at a time.
  • SafeCell Impact Absorbing Harness slows forward movement in the event of a crash.
  • 7-Position Recline with Automatic Level Indicator adjusts for your child?s comfort while ensuring the best installation angle for your vehicle.
  • Plush Foam Padding in the cover, buckle pad, shoulder pads and removable pillow surrounds your child in comfort at every touch point.
  • 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.
  • Quick-Adjust, 12-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.
  • Certified for Aircraft Travel
  • Made in the USA with global components

Complete Specifications:

  • Child Weight (lbs) Rear Facing: 5 - 40 , Forward Facing: 1 year and 20, up to 65
  • Child Standing Height (in) 49 or less
  • Child Seated Shoulder Height (in) 16.95 or less
  • Product Weight (lbs) 28.5
  • Product Dimensions (in) 18.5W x 23.5H x 23D
  • Seating Compartment Height (in) 23.75
  • Seat Area Depth / Width (in) 10.5 / 11.5
  • Shoulder Width (in) 16
  • Harness Slot Heights (in) 8.35 to 17.7 (.85" increments), 12 positions
  • Buckle Strap Depths (in) 5.25 / 7

307 Reviews
77% (236)
15% (47)
2% (7)
2% (7)
3% (10)
93% Recommend this product (284 of 307 responses)
By Drew
Clinton, Ohio
September 17, 2018
This clicktight option is amazing!! makes installing a breeze!!
By Nathan
Morris, Illinois
September 16, 2018
Beautiful and Well Designed Car Seat
This car seat is wonderful. It looks great, very easy to use, and my child looks very cozy when riding in it! Quick installation into vehicle makes it painless if you have to switch it from vehicle to vehicle. The safety restraint system is easy to use so your child won’t get mad at you when you are trying to fasten them in!
ProsDesign Cost Construction Brand Safety
New Jersey
September 7, 2018
Britax Marathon Car sears click & go
The Britax click and go car seat is so easy to install. As a grandparent, I can easily take the seat in and out of my car without any help. The seat padding is comfortable and the seat is designed for safety. Albee has not only the best price but quick delivery. I recommend the seat and purchasing at Albee.
By kristofer
pawtucket, Rhode Island
September 2, 2018
Awsome/Safe/Great Price
This is an amazing seat. One of the easiest installs out there. Super comfortable and safe!
By Kim G
Philadelphia, PA
September 2, 2018
So easy to install
I was skeptical about how simple installing the Britax Marathons Clicktight would be, but it quickly exceed my expectations! It was installed in minutes.
By Danielle
Falls Church, VA
August 31, 2018
Love the Marathon and ClickTight!
This is our second Marathon car seat. We loved our first and when our son outgrew the infant car seat, we knew we wanted another Britax. We like that the straps don't get tangled. can be placed/held to the side when getting the child in and out, and now we love the ease of installation with CickTight. He seems very comfortable in the seat and I really can't say enough about how easy it is to get him in and out. We had another brand for our daughter and the straps were constantly getting hung up or tangled and it was really difficult to tighten the straps once she was in, particularly when it was rear facing. We have none of those issues with the Marathon. I highly recommend this car seat and the price is unbeatable for all the options and safety features.
By Dana
Lafayette, LA
August 18, 2018
Very sturdy and well made
The only reason I didnt give 5 stars is because of the weight. Not a good choice if you will be traveling or moving the car seat regularly. Otherwise, it seems to be much sturdier than our previous car seats. Very easy to install and adjust.
By Ashley
August 17, 2018
Fantastic seat
We bought 3 to replace carseats that were involved in an accident. We absolutely love them! The clicktight feature is so easy to use and make install a breeze. With having 5 children we are very familiar with installing carseats but this seat has made it so much easier and quicker to move the around. They are also slim enough so easily fit 3 across in our Odyssey. Love love love !
By Jan
Seattle, WA
August 17, 2018
Excellent product. Fits in an older subaru, which are not easy fits. HAPPY.
Thank you force the great price on this excellent car seat. Easy to install. Excellent safety reviews. A grandmother could not ask for more. Thank you Albee Baby
ProsThis seat works in a 2000 Subaru Outback which are notorious for being difficult to stabilize a car seat. Albee Baby offered a great price, with free long distance shipping.
By Antoinette
Chicago, IL
August 13, 2018
Quality product
The safety touted by this model was my main reason for purchasing this seat. I am adopting a little boy so I don't need any infant seat as he is already 20 lbs. I was happy with the color too - red is auspicious in Chinese culture. This is the perfect fit for our son.
Best UsesPrimary car seat
By Nancy
August 4, 2018
Excellent seat
My daughter has this seat for her daughter. I bought this one for her son. It is very easy to move from car to car. My grand daughter finds it to be quite comfortable.
ProsEasy to move car to car.
By Sara
August 4, 2018
A favorite
We recently switched from our daughter’s infant car seat to this one. She’s not a fan of traveling, but so far seems to love this seat. It sits up higher than her infant seat and she can see more now, plus the seat is very plush and comfortable, so I think it is definitely a better ride (upgrade) for her. The install is simple and we like the reclining positions, not to mention the safety features. Glad this will grow with her and get good use.
By Jess
August 2, 2018
I love this car seat for my toddler. Very spacious, yet when I buckle her in, I know she’s safely buckled in. It is heavy, but overall very happy with my purchase.
ProsSafe, toddler loves it.
By Kimberly
Leonard, Michigan
August 2, 2018
I Love Love Love this car seat ! Very easy to install , comfortable and above all safe! This car seat cannot be used in 2017 Ford Explorer or truck due to the inflatable seatbelt , I spoke to britax directly for about 30 min and they confirmed. We put it in another vehicle & it s fantastic!
By Kat
August 2, 2018
Very happy
I was very pleased with this car seat. We had a chicco next fit and were getting this seat as a second seat. I actually liked this one better so made the next fit my secondary seat (due to the bucket design the Britax was easier to get my rear facing almost 2 year old into) my son is 23 months 23 lbs and 25th percentile for height. I plan to rearface him until 3.
ProsInstallation using click tight was super easy. Seat feels very plush and my son seems comfortable in it. I was able to fit 3 across in my Honda Odyssey (Britax pioneer in high back booster mode and a Graco low back on either side of the marathon). My son in the high back pioneer (bulky seat) can easily buckle himself in.
Consthe installations instructions confused me a bit and I thought I was suppose to lock the seat belt before doing the click tight. After you tubing the install I can get a perfect instal in minutes in any position in my van. The other problem I am having is the cover slipping off and exposing the foam. A friend of mine with a similar Britax seat has the same issue except her two year old is picking at the foam. Luckily mine hasn?t noticed and I cover mine as soon as I see it has slipped.
By amcd7717
July 23, 2018
Used Britax with my older girls (now 11 &13). Wouldn't change a thing! So pleased with this product and I know it will keep the baby safe.
* This product review was collected by the manufacturer.
By Kelly
Breckenridge, CO
July 11, 2018
My baby loves this carseat!
I have an 11 mo old and she was feeling crowded in her keyfit30 infant car seat. Everytime I'd put her in her old seat she would cry and fuss. After getting this car seat she is alot more comfortable, and does not fuss or cry at all when in it. I love the colora and fabric and overall it was pretty easy to install.
By Anna
New York
July 8, 2018
Perfect convertible.
Purchased this one for grandparents car, it was the easiest for them to use.I was impressed how easy it is installed and how fast. I have older Britax Advocate in my car and it takes two people to install and tighten it properly, so I was very happy with this one.
ProsEasy to install, easy to use, easy to adjust harness
By Terri/Ohio
June 21, 2018
Grammy Friendly
After struggling with a different car seat for 4 months, my daughter-in-law, daughter, and I found this gem.The click tight mechanism is super easy and secure. The "bolt" clip things that are deep into the recesses of my back seat do not need to be used. Amen. The seatbelt that is in the back seat clips into a compartment that can not be accessed by the child while driving, safety first. Since I babysit my grandson during the school year, it is essential that I have a car seat that I can operate under today's standards. This Britax does the trick.I highly recommend this product.
ProsEasy install. Easy use of straps on child. Tighten and Loosen without a struggle. Nice color choices.
ConsA bit heavy, but not a deal breaker. No cup holders for cups/toys. Pricey.
June 15, 2018
2nd time buying
This is our third britax convertible car seat and second of this exact model. Safety is so important, but we live in the suburbs so we also need something comfortable since the kids are in the car daily and this one fits the bill. Both my 1 yo and 3.5 yo love this car seat. Really easy to use as well. Only downside is that it is quite large rear facing so I would measure if you have a smaller car.
By Victoria
Sacrameto, CA
June 14, 2018
Great car seat!
I really like my Britax car seat. It is very roomy and comfortable. I love all the seat recline options as well. When baby is sleepy I just recline the car seat and she sleeps comfortably. Love love love it! The fabric is nice as well! (I ordered the marathon Prescott and my baby is 12 months old.)
By Louise Saldutti
June 13, 2018
Britain carseat
3rd one I bought and loving itWe now have one in each car for our grandson
Best UsesI all our cars safety for our grandson
By Grandma and Papa
Grand Rapids, MI
June 7, 2018
Grandparents car seat
I just received in mail. I have registered and did call about strong odor when arrived. They said if not gone in 24 hrs to call back. So am waiting til tomorrow to install.
* This product review was collected by the manufacturer.
By Elizabeth
June 5, 2018
Great Seat
I had this seat in cowmooflage for my older child, so I wanted to get the same seat, but no white this time. I feel very comfortable having my infant in this durable, well built seat. The clicktight is a major plus!
ProsClicktight installation
Consnone :)
By Lucky
Victoria, Texas
June 5, 2018
The best car seat
I still have my infant car seat in my husbands truck so I am able to appreciate the ease of this carseat! The straps come lose so easily when pushing the loosen button. I love that it is hidden deal in a hole so my little cannot reach it. The way the seat lifts up to buckle it in is just mind blowing! I love it so much. My old car seat is so hard to unlatch and losen the straps to get her in and out. I love the seat pads for comfort. I love the ease of moving the straps up and down with the red button up top. No more pulling straps out to move them and have them all twisted having to redo it again! I JUST LOVE THIS CAR SEAT!!
By 03kk
May 30, 2018
Love the carseat, hate the latch system.
I purchased this car seat for my granddaughter for it's safety and the ease of the clicktight system. However, after purchasing a new vehicle that has airbags in the seatbelts, I have to use the latch system. Because I don't keep the seat in my vehicle, I put it in and take it out when needed. It takes forever to remove it due to the clips used to latch in the seat. Trying to hold down the latch and push it in and twist it then pull to remove is just too hard. And it's not just me, my daughter had the same problem when she borrowed the seat. If you can use the clicktight seatbelt system, this is a great seat. If you need to use a latch system, buy something else.
* This product review was collected by the manufacturer.
By Drew
May 10, 2018
Amazing carseat!
This is a great carseat. My daughter loves it. It is soft and very secure!
By JConk
May 3, 2018
Comfortable, adjustable, perfect fit!
Britax is our preferred car seat. Their safety standards are excellent. So, we trust Britax. This was our first experience with a click-tight seat. It was VERY easy to install, less bulky, the padding was better and we LOVE the additional plastic storage pockets for extra straps.
Pros-easy to install -streamlined -padded -great strap storage -easy to adjust -nice color options
By Amber
Blue Ridge, Georgia
May 2, 2018
Great car seat!
Great car seat! Very safe and does not move at all!
By Emma
Montgomery, New York
April 25, 2018
My first Britax
This seat is amazing. If you plan on/need to move a seat from vehicle toVehicle often then the Clicktight is so worth the price. The harness is also so easy to use and the design is very sleek. My daughter loves her britax. It is very compact front to back when rear facing a toddler, so this seat works well in smaller cars (once kiddo can sit unassisted).
ProsEase of install, no rethread harness, nice fabric, comfortable.
Best UsesSwitching between vehicles often
By Chris
San Antonio, TX
April 25, 2018
Excellent car seat
This is an excellent car seat. It took a little understanding at first on how to put the seat belt, But after a few mins it is a cinch!
By saracat
Sacramento, CA
April 22, 2018
Had one of these and one of a different brand
And that Clicktight concept is worth its weight in gold. No more wrestling in the back seat in the CA heat. Ended up replacing the other one just to not have to go through that again, now have 2 Britaxes! Only concern is hoping I can fit more in the seat with kid #2.
* This product review was collected by the manufacturer.
By Jess
Frenchtown, Montana
April 20, 2018
Cadillac of Car Seats!
My husband and I love this carseat. It is well padded and a comfortable fit for our 1 year old. He falls sleep all the time. Our infant carseat was a Britax as well. We feel much more at ease with the safety ratings! I also love how this carseat can stay rear facing for longer.
ProsComfortably cushioned, room to grow, high safety ratings, and easy to install and move out of car.
ConsSometimes the straps twist but overall I haven't found any other cons!
By Lindsey
Atlanta Georgia
April 18, 2018
Best carseat
We have had many car seats and this by far is the easiest to install. My son loves it and is so comfortable in it.
By Carl
Brooklyn, NY
April 14, 2018
Easy to use
We got this after reading lots of reviews and watching the Car Seat Ladys video. Its super easy to install and seems pretty comfortable for the baby.
By Christy
Alton, New Hampshire
April 11, 2018
Wonderful product
My daughter has always hated her car seat! When I unpacked this car seat I almost didnEtmt get to install it in my car, she just wanted to sit in it! Now she actually enjoys going in the car! I would record this seat to anyone and everyone who will listen! Best Buy Ever!!! Thank you Britax and Albee baby!
By mary
yuba city, ca
April 6, 2018
Britax Convertible Car Seat
I like the car seat. Very heavy, but for a good reason. Comfortable for my grand-daughter who is 16 months old. She is 32 inches tall, so she is still forward facing. Read the instructions for install pretty easy.
Prosnice comfortable seat. Love the Britax line have the Britax infant b-safe car seat and will be using that for the new baby coming soon.
Best UsesStay in the car car seat. Too heavy to move out.
April 6, 2018
Best purchase to relieve your insanity
It takes just a little more time to install but all worth it to ensure baby's security. I love the fact that it has extra sizes for your growing baby.
ProsA heavy duty car seat for best protection.
ConsNot stroller compatible.
By Britiany
Raleigh, North Carolina
March 4, 2018
Car Seat
I bought this car seat for my mom who keeps my 9 month old on a regular basis. It fits perfectly and we already love the seat!
By Mina
Las Vegas
March 2, 2018
Awesome transition
We bought two of them one for my car and other for my husband. We didn't want sacrifice safety for price. We got safety and price!!
By Yuchan
Charlotte, NC
February 22, 2018
Best price for the Safest Car Seat!
I spent a lot of time on looking for a good deal for Britax Marathon ClickThight. It has the best overall scores cross several baby car seat rankings. I was surprised to see such a low price + no tax. Highly recommend to parents who consider safety is no.1 when shopping for a car seat.
By Kelly
Sarasota, FL
February 15, 2018
Bought this car seat after much research
I read lots of reviews on convertible car seats before deciding on the Britax Marathon ClickTight. I love it! It is super easy to install. The great thing is once you click the seat in place during installation you know you have installed correctly. This is my fifth car seat I have purchased for grandchildren, and I think the best yet!
By Kelsey Brown
Temecula, California
February 6, 2018
This is a great car seat
We have the marathon, the boulevard, and the advocate and the marathon is my favorite. The boulevard doesnt have enough padding and is way too bouncy. The advocate has way too much padding, where we had to take some of the padding out because it was just too much. The marathon is right in the middle and its perfect. Its comfortable for my daughter and she loves it. Plus it still has the click tight technology.
By Melissa
Kitty Hawk, NC
February 2, 2018
Easiest car seat to install, ever. Love this seat. This is the second one I've bought from this company. They are awesome.
ProsEasy to install! Heavy, good for stabilizing Nice looking
By Janine
Dallas, TX
January 19, 2018
Great convertible car seat!
This is actually our second Britax Marathon ClickTight Convertible Car Seat. We wanted our second daughter to have the same color car seat as our first. We love the color, the quality and it's very easy to keep clean. I highly recommend this car seat!
By Ruthiemomof4
Denver, CO
January 15, 2018
Great carseat
We have owned several Britax carseats. Our first set of seats has expired from our older children (so annoying) so we needed to purchase more for our 1 year old twins. These fit easily side by side, rear facing. It is easy to adjust the straps which is important in the winter when your layers can add extra bulk. The fabric is soft and I like the extra cushion they added under the bum. The click tight option is awesome. It is easy to use and makes install less of a hassle. We don't have to move these often, but it will be easy when we do. All in all, very satisfied with this purchase.
By Stephanie
January 7, 2018
Great seat
Love this seat. The click tight feature makes installing the seat quick.
By B Martinez
San Diego, CA, United States
December 23, 2017
Not a good seat for a 2012 Honda Odyssey
I bought this car seat believing it would be a great improvement from the babyseat. Unfortunately we tried to install it in the middle seat of a 2012 Honda Odyssey and not mater what we did even followed a video instruction from Britax the seat would move. We will be returning his car seat and hope we find one that is an easier install for a Honda Odyssey.
* This product review was collected by the manufacturer.
By Terri
Charlotte, NC
December 15, 2017
Easy to install
I purchased this car seat for the times I have my grandkids. I opened the box, pulled out the car seat and had it installed and secured within 5 minutes. One grandchild is forward facing and one is backward facing. Its very easy to adjust to accommodate either child.
By Momof5
Los Angeles,Ca
December 10, 2017
My go to car seat
Have always had britax for all my kids. Click tight feature makes it easy to put in the car. Thanks to Albee for the great price.

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