The Marathon is also one of many Britax 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 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.