The Britax Marathon 70 fits children from 5-70 lbs. It is both a rear facing car seat (5-40 lb child) and a forward facing seat (20-70 lbs). The Marathon 70 brings together Britax’s 360 Degree Protection system consisting of the SafeCell Technology (a network of “SafeCell” structures which compress during an accident, lowering the center of gravity of the car seat and working to stop the forward rotation of the seat), integrated steel bars (which prevents flexing of the car seat and enforces the seat’s connection to the vehicle’s seat), and Versa-Tether (these are anchors on the top of the seat, where other car seats only have bottom anchors, that provide an extra connection to the vehicle and greatly reduces the forward rotation of the car seat in a crash). All these work together to minimize forward roll, keep your child secure in the seat, reduce the forces that reach the child and protect the child’s head in the event of an accident. The five point harness system is also very effective in keeping the child secure.
The Marathon 70 features a rigid seat shell, energy absorbing foam lining and deep side walls to disperse crash forces and protecting the child’s head and chest. Safety wise, the Britax line of car seats provides the most comprehensive protection system of any seat manufacturer we reviewed and the Marathon 70 takes full advantage of these world class safety features that tightly anchor the car seat to the vehicle, prevent forward roll, distribute crash forces, surround your child in a rigid structure for side impact protection and protect the child’s head and chest.
The Britax Marathon 70 convertible car seat is not only about safety – premium comfort and good looks are also prominent features of the Marathon. The car seat is available in six different colors: Onyx, Crimson, Waverly, Cowmooflage, Blueprint, and Allison. It has high density foam, a belly pad and plush covers that, along with the wide seating area, will keep your child comfortable on any trip. The seat reclines whether it is used as a forward or rear facing seat. The Marathon 70’s five point tangle free harness has ten height settings for unprecedented flexibility and, along with the seat’s two buckle positions, provides a custom fit for children of all sizes and ages.
- Fits kids from 5-70 lbs.
- SafeCell Head Safety technology which compresses and lowers the seat’s center of gravity to prevent forward roll in a crash.
- Versa Tether, top and bottom tether’s also prevent forward roll by providing a top point of attachment to the vehicle.
- Steel bars to prevent forward flexing.
- Side Impact Protection System comprising a rigid seat shell, deep side walls and Expanded
- Polypropylene foam lining to absorb energy.
- Six colors available.
- Built in lock-offs for easy installation using the vehicle’s seat belt.
- Push button uninstall of the connectors.
- Tangle free five point harness.
- Both a forward and rear facing car seat.
- Anti slip base grips to protect the vehicle’s seat and connect tightly to any vehicle.
- Easy to remove and clean pads and cover set does not require disassembly or removal of the seat from the vehicle.
How do customers like the Britax Marathon 70?
The Britax Marathon 70 is one of the most popular and feature rich car seats that we have reviewed. At the time of this writing it had 225 customer reviews on Amazon and an overall customer rating of 4.5 stars out of a maximum of 5 stars. Most of the reviewers gave the Marathon 70 extremely positive comments, with many of them saying that this is their second or subsequent Marathon 70. Comments from buyers praised the Marathon 70’s safety features as well as the convenience of it’s easy installation and the ability to quickly and easily remove the cover for washing.
Main positives of the Britax Marathon 70 according to customers:
Integrates the same head protection technology of more expensive Britax models.
Britax car seats are usually softer and more comfortable than other seats.
Shoulder height can be adjusted without re-threading.
The seat is wide and plush making it comfortable for children of all sizes.
Has a crotch strap protector so the child’s legs won’t get pinched accidentally.
Chief customer complaints about the Britax Marathon 70:
- This, as well as other Britax car seats, are more often outgrown by a child height wise rather than weight wise.
- The new locking mechanism for seat belt use is more difficult than the previous model.
- Does not bring cup holders.
- When the seat is in the rear facing position, the base is not tall enough to allow a full recline.
- One customer said that she is concerned after reading in HealthyStuff.org that the Britax
- Marathon 70 in JetSet was found to be one of the worst car seats for chemical exposure. We found that the great majority of car seats that HealthyStuff.org tested ranked a “Medium” for exposure followed by “High” and only a few seats were found to have “None” as the rating for chemical exposure. The Marathon 70’s that were tested were ones in Allison, Crimson and JetSet colors. Only the JetSet was found to have a “High” rating and thus we would recommend that you steer clear of this seat in the JetSet color until further testing reveals that the problem has been corrected.
Conclusion of customer reviews:
The Britax Marathon 70 is one of the most popular car seats on the market and it is easy to see why: The Marathon 70 is a very well rounded seat bringing together world class safety features, ease of installation, versatility and comfort. Britax is a leader in infant and child car seats and the Marathon 70 brings together it’s strongest features such as the SafeCell head safety technology, Versa Tether top anchors in addition to the bottom LATCH system, it’s side impact protection system and steel bar reinforcements as well as the tangle free five point harness, easy removal seat cover and pads and wide, plush design for comfort. With hundreds of satisfied customers giving it some of the highest marks among all car seats sold by Amazon, the Britax Marathon 70 is a solid choice for anyone looking for a safe, sturdy and comfortable car seat.