Britax Marathon 70 Convertible Car Seat

Britax Marathon 70Britax Marathon 70


Convertible car seats are highly recommended as travel safety gear.

Besides fulfilling the basic purpose of keeping your child safe, the modern convertibles also ensure a comfortable journey for the little ones.

A good, lets call it child car seat, is the one which offers protection and comfort to your child, and convenience of use to parents.

A good choice here may be the flexibly efficient Britax Marathon 70, the next generation car seat by Britax®; it’s quite versatile, with lots of customizable features, and enjoys high safety ratings.

This car seat is currently on sale on Amazon through this link only!

Benefits of The Britax Marathon 70

Offers all-around, 360 Degree Protection

The Britax Marathon 70 boasts of cutting-edge road safety features and techs like SafeCell™, Integrated Steel Bars, and Energy-Absorbing Versa-Tether®. These features ensure maximum protection in case of front-impact accidents. In addition, the extended, tough side-walls prevent head and neck injuries due side-impact mishaps. Also, the side-walls are reinforced with shock-absorbing EPP foam which greatly diminishes the impact force. Together, all these purposefully developed features render the seat, effectively invulnerable from all sides.

Great Adjustability: Fits Infants and Juniors Alike

Britax Marathon 70 lets you opt between forward and rear facing reclines. Rear facing position is safer and more suitable for infants and toddlers, while you can seat your juniors comfortably facing forward. The seat’s ingenious height adjustability is as simple as 123 and its handier then anything as it perfectly fits your fast-growing children all the time.

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Simple Installation, Cushy Ride

The seat, with its generous, high-quality, foam padding and great ergonomics, lets your child enjoy comfortable journey and un-disturbed naps. For parents, the installation procedure is simple, the instructions straight forward, and the outcome firmly secure.  Also, you can enjoy great space availability, thanks to seat’s intelligent design

Check Out This Britax Marathon Review

Buy The Britax Marathon 70 On Amazon here (cheapest place)

Pros and Cons of Britax Marathon 70 Car Seat


  • Integrated Steel Bars and Safe Cell™ technology offer great protection, especially in front-impact accidents.
  • Sturdy side-walls and EPP foam prevent injuries in case of side impact.
  • Large weight capacity and adjustable shoulder height lets the seat grow as your child does.
  • Forward and rear facing choices for increased comfort, and space availability.
  • Simple and secure installation using latch or seatbelt method.
  • Contoured base-grips hold the car-seat tightly, without spoiling it.
  • If you want to buy this car seat, you can get it for over 20% off on Amazon through this link here.


  • The Britax Marathon 70 seat is a bit uncomfortable for 70-pound children, even in forward-facing position.
  • Installation procedure is simple, but requires considerable effort.


1. Fabric: Onyx

2. Weight

  • Rear facing: 5-40 pounds.
  • Forward Facing: Up to 70 pounds.

3. Height

  • 49 inches or less. (Same for forward and rear facing)

4. Seated Shoulder Height

  • Rear facing: 9 to 16.75 inches.
  • Forward Facing: 12 to 16.75 inches.

My Verdict

Reliably secure, easy to use, and ultra-comfortable, the Britax Marathon 70 convertible car seat is the perfect travel companion for your child, surely not to be missed.

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Britax Marathon 70 Convertible Car Seat, Onyx

Britax Marathon 70 Convertible Car Seat, Onyx


  • Safe cell technology features safe cells designed to compress in a crash, significantly lowering the center of gravity and counteracting the forward rotation of the child seat which normally propels the child toward the front seat
  • Integrated steel bars strengthen the connection to the vehicle and reduce forward flexing of the child seat during a crash
  • Energy-absorbing versa-tether features a staged-release tether webbing to slow the forward movement, reducing the crash forces reaching the child, and a two-point attachment to minimize forward rotation while anchoring the top of the child seat
  • Side impact protection comprised of deep side walls lined with energy-absorbing EPP foam distributes crash forces, shields from vehicle intrusion, and contains the head, neck and body
  • Tangle-free; Five-point harness distributes crash forces across the strongest parts of the body and provides a secure fit

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