Our Review of the Britax Marathon convertible car seat
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"Designed for kids . . . engineered for parents."
Click here to view a demo of Britax Side-Impact Protection
- Britax has just implemented a new, patent-pending, energy absorbing rip-stitch tether for all Marathon convertible car seats.
Increasing the time a child can safely stay in their convertible car seat is a big issue and Britax engineers have come through in a big way with the introduction of the Britax Marathon with LATCH. A LATCH Compatible Convertible Child Seat, the Britax Marathon can be used rear facing 5 to 35 pounds and forward facing from 20 to 65 pounds. Compare the numbers and you will see it is hard to find a seat with these weight limits that is safe and functional.
The Britax Marathon is built on a shell with dimensions that are larger than the Britax Roundabout. Even with the larger dimensions, the Marathon is still approved for use on aircraft and will fit perfectly in just about every car out there. (Rear-facing installation may be more tricky. If intended for rear-facing use, please allow for 31" of back seat space)Some standout features include a four-position adjustable shoulder straps that are easy to change as your child grows, easy to install IsoFit™ LATCH buckles, easy to adjust recline system, and floating HUGS that enable easy chest clip placement and distributes the harness load to avoid webbing edge irritation to a child's neck in the event of a crash.
Trying to decide between the Britax Marathon and Britax Decathlon?
The Britax Decathlon is identical in many ways to the Marathon. Updated features on the Decathlon include:
- 3-position adjustable crotch strap
- Removable toddler head pillow and infant positioning system for newborn babies
If you are looking for your baby's first car seat, the additional padding on the Decathlon will be an attractive feature. Or, if you're searching for a second seat for your child who continues to come up at the top of the growth chart, the Decathalon's adjustable crotch strap might come in handy as he or she grows even more. If these are not in your list of concerns, then the Marathon should work great.
*Please note: Use vehicle seat belt (not LATCH connectors) for installations with children weighing more than 48 pounds (21 kg.). Refer to the vehicle's owner's manual or contact the vehicle manufacturer for the maximum weight rating for their LATCH anchors. Unless specified otherwise by the vehicle manufacturer, assume a 48 pound child is the vehicle LATCH anchor limit.
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Authorized Britax Dealer Britax maintains an authorized dealer network which protects you from buying used, illegally imported, or fake Britax Car Seats. In addition, Britax warranty only covers car seats purchased from an authorized retailer. Britax products purchased on eBay or any auction site voids the warranty. |
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- Cowmooflage swatch
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- Crocodile
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- Granite
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- Mariposa
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- Mariposa swatch
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- New Denim
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- Onyx
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- Granite in use
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Car seat specs
- Min child weight
- 5 lbs.
- Max child weight
- 65 lbs.
- Rear-facing minimum weight
- 5 lbs.
- Max child weight - Rear Facing mode
- 35 lbs.
- Min child weight - Forward Facing mode
- 20 lbs.
- Max child weight - Forward facing mode
- 65 lbs.
- Max harness weight capacity
- 65 lbs.
- Min child height
- 18"
- Max child height
- 49"
- Min child height - Forward facing mode
- 18"
- Max 5-pt harness child height capacity
- 49"
Car seat dimensions
- Product weight
- 17.5 lbs.
- Seat Base / Foot Width
- 19.5"
- Seat height
- 28"
- Interior seat width
- 11"
- Interior seat back height
- 22.5"
- Bottom to lowest harness slot
- 10"
- Bottom to highest harness slot
- 17.5"
- Easy Recline Adjustment Handle provides a range of comfortable seating and reclining positions
- Britax Patented Versa-Tether™ secures the seat from tilting forward or backward in the event of an impact in both the forward and rear facing positions.
- Five-Point Harness with four adjustable shoulder heights for a secure fit as your child grows
- One Pull Harness Strap Adjuster for quick, easy, and snug fit every time
- IsoFit™ Flexible Buckle System for LATCH, ensuring a simple and secure fit
- Removable, hand-washable cover.
- Floating HUGS (Harness Ultra-Guard System) enables easy chest clip placement and distributes the harness load to avoid webbing edge irritation to a child's neck in the event of a crash
- Built in Lock-Offs, both forward facing and rear facing, are designed for easy reach and operation when using traditional belt routing
- Approved for use in aircraft
- Product dimensions: 28"H x 19.5"W x 25"D, 17.5 lbs.
Britax Marathon convertible car seat Reviews
All Customer Reviews
- Average Rating:
- Highest Rating:
- Lowest Rating:
- Number of Reviews:
- 155
Great seat
Reviewer: Anna , Springfield, MA
Date: September 15, 2009
It is sturdy, and VERY safe. The only problem is that it is bulky and heavy. As for the comment of another reviewer that it cannot be used for taller children, my 5 1/2 year old is still in it at 46 inches tall, and there is still room.
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Good seat -- but no way will you reach 49
Reviewer: Anonymous , Kansas City, KS
Date: September 03, 2009
We've had Marathons since my twins outgrew their infant seats 3.5 years ago. Now my 4 yos are 42" and are outgrowing them by height. My kids are NOT all torso, so advertising them as good to 49" is misleading. If you want a good easy to use seat, they are great, just don't expect to use them much past 41 or 42" of height.
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Its alright
Reviewer: Anonymous , Ontario, Ca
Date: May 01, 2009
I loved this seat at first, it looked so comfy, I loved the safty rating, etc.
But my biggest problems are:
A) It's size... Rear facing in our 4 door 2002 chevy cavalier it can ONLY fit in the middle seat. The back sticks up so high, even in the middle it hits my broad shouldered husband in the back whenever he's in the car.
And when it's forward facing the seat sticks out so far it's a tight fit for anyone to sit in the backseat when it's in the middle seat.
And B) my son can reach the button for the adjuster strap. He pulls the button, leans forward and in essence he loosens himself from the his seat while we're driving. SO unsafe!
When I called britax they sent me a "training tool" which is a plastic piece to go over the hole for the button. But the instructions they sent a VERY vague and I still can't figure out how to put it on.
I'm going to have to call them AGAIN to ask how to put it on, and hope someone knows what they're talking about.
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Britax Marathon
Reviewer: Anonymous , Virginia, MN
Date: April 26, 2009
My husband and I purchased a Britax Marathon in Dec. 2006 for our 5 mon. old son. He reached the max height on his infant seat alot sooner than we expected. since we got the britax we loved it. Easy to install and once installed it doesn't budge. My husband kneeled in it to get it as tight as possible. Now that we have a 10 month old daughter we are purchasing our second one. We love them and highly recommend them to anyone who wants the best safety and comfort for their child.
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No complaints
Reviewer: Bonnie , Santa Fe, NM
Date: April 25, 2009
We purchased this seat for my husband's SUV when our daughter was about a year old and she is still sitting in it comfortably at age 2.5. It seems as though she has room to grow in it further, though she has already grown out of the other convertible car seat we purchased for her, the Maxi Cosi, which we had in my car. We just ordered another Britax to keep her comfortable and safe in both our cars.
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Dodge Neon
Reviewer: Nicole , Watertown, CT
Date: April 22, 2009
I purchased 2 marathons, one for my husbands car (nissan altima) and one for my dodge neon. I am wondering if the carseat will fit into my car though! I dont want to open it and find out it doesnt fit and not be able to return it. I LOVE the carseat in my husbands car though. Very easy to install and love how comfortable my daughter is in it!
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Great car seat...back for number 2.
Reviewer: Lindsay , Birmingham, AL
Date: February 16, 2009
we purchased the marathon in the tiffany print for our daughter when she was 8 months. she is now almost three and i have loved the carseat from the beginning. it truly is the cadillac of carseats. only one tiny complaint...the latch straps only let-out so far; this makes it a bit difficult/strenuous to attach in some cars. however, it can be done with a little muscle and patience. with all this said, i am back for a second one for my 7-month old son.
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A Must Buy!
Reviewer: Rebecca O , Neosho, MO
Date: February 04, 2009
We purchased the Britax Marathon for my son when he was 8 months old. We kept him rear-facing until he reached the max weight for rear-facing at 2.5 years old. Now 4, he rides front-facing and still has a lot of room to grow. We bought the denim cover and it still looks great. It has been washed countless times, and like a pair of jeans, the denim has faded in areas, but I think the fading makes it look really cute.
We have driven all over the country and my son rarely complains of being uncomfortable. This seat is well padded and perfect for napping.
I love the rigid latch. I really didn't appreciate this until I tried to install my nephew's cheap Wal*Mart carseat and had a VERY difficult time getting a proper fit. The Marathon cinches down quickly and easily. Once installed, it doesn't budge. If your vehicle doesn't have LATCH, the Marathon has seatbelt lock-offs to help maintain the proper tension of the seatbelt. This has really been handy for us since my sister-in-law's car doesn't have locking seatbelts in the backseat. No problem for us, though!
In short, I can't say enough about the Marathon. It has been one of the best investments I've made. We have had 4 years of use from our Marathon and I anticipate at least another year before my son outgrows it.
Compatibility: This carseat has been installed with no problems in many different vehicles ranging from Toyota Corolla to Chevy Suburban. Actually, I have yet to encounter a vehicle in which I was unable to obtain a rock-solid installation.
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Highly Satisfied Customer!
Reviewer: Amanda , Port Charlotte, FL
Date: January 05, 2009
I purchased the Marathon for my son when he was 6 months old. He was in a Peg Perego Primo Viago car seat, but he seemed to dislike the fact that he couldn't see out the window. I purchased the Marathon and we have had a happy camper in the back seat ever since. I love this car seat! We got the fancy couture model, and the fabric is fantastic! Very easy to clean spills out of. I love the LATCH system, which isn't available on cheaper car seats. It certainly makes moving the seat into a different car a breeze. I would definately recommend this seat to anyone I know. I will ceratinly purchase another Marathon for our next baby... whenever that may be! It is a pricey car seat, but there really is nothing more imporant than my child's safety! It is worth every penny in my opinion. My only negative comment is that the car seat is VERY heavy. When we travel, my husband has to carry the car seat and travel bag because it is a little much for me. A small price to pay I guess for such a wonderful seat!
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