The legendary Britax Marathon convertible car seat is renowned for safety, comfort, and convenience.

Rear Facing: 5 lbs. to 33 lbs.

Forward Facing: 1-year-old and up / up to 65 lbs.

The Marathon is also one of many Britax Child Safety, Inc. products renowned for its ability to keep your child in a harnessed restraint up to 65 pounds. 

Unique features including a patent-pending rip-stitch tether - reduces G-force effects on the head and body in the event of an impact, a sculpted base, push button release LATCH system with patented Versa-Tether®, and built-in vehicle belt lock-offs, make a tight installation in your vehicle quick and simple. The tangle-free polyester 5-point harness helps to effortlessly secure your child every day. The Marathon also offers a patented HUGS™ system, belly pad, and a plush & washable seat cover for that ultimate comfort experience for children rear-facing from 5 to 33 pounds or children forward-facing from 1-year-old and 20 to 65 pounds.