[MnMadhouse]

Not really a HUGE difference between the two. The Marathon has the life lever and the Decathlon has the push button lever. I prefer the lift lever..it is just a preference to me. The Decathlon has 3 different crotch buckle positions and the Marathon only has one. The Decathlon has an infant insert and the Marathon does not. They both RF to 33lbs (although they are upping their RFing limits to 35lbs in 2008) and FF to 65lbs. It seems that if you are one to change covers often, Britax offers more covers for the Marathon. HTH!

	Forward Facing Car Seats A forward-facing car seat is one in which the child sits facing the front of the car. The seat should be installed in the back seat of your vehicle. Most forward-facing only seats are for children above 20 pounds.

	Britax - Click for more info Britax International has been producing reliable child safety products for over 30 years. Not only does Britax have decades of experience creating car seats and other children's safety equipment, Britax has a long standing reputation as an industry leader and innovator. Britax International is headquartered in the United Kingdom, but Britax car seats are designed and manufactured at facilities in Germany, Austria, and the United States. In the summer of 2002, Britax strengthened their commitment to creating the safest car seats with the opening of a brand new, state-of-the-art crash testing facility in North Carolina. Britax car seats have a reputation around the world for being some of the safest, most reliable, and best designed child safety seats ever made.

	Rear Facing Car Seats A rear-facing seat is one in which the infant faces the back of the car. Always install a rear-facing seat in the back seat of your car. This is the safest position for an infant. NEVER place a rear-facing seat in the front seat of a vehicle with passenger airbags.

	Britax Marathon - Click for more info 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 33 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.

	Britax Decathlon - Click for more info Like its predecessors the Britax Roundabout and the Britax Marathon, the Britax Decathlon is built around two core ideals: safety and comfort. Its easy to see that the Decathlon is comfortable: it's loaded with a 3-position crotch strap, patented HUGS harness system, plush (and washable!) seat cover, belly pad, removable toddler head pillow, and an infant positioning system for newborn babies. These features provide a comfortable, adjustable fit as your child grows - all the way from 5 to 65 pounds.