In stock items ship within 48 hours. Items not in stock typically ship within 1-2 weeks.
* Please Note - We only sell current Britax Marathon 2008 model car seats - many other online stores will sell you a 2 or 3 year old car seat that has been sitting in their warehouse for years (without telling you) so please be aware of this when comparison shopping. Most car seats have an expiration date of 6 years so by purchasing one of these older seats you may save a few dollars but will get significantly less use out of the seat in the end.
The Britax Marathon ™ is the number one selling Britax convertible child seat and is ideal for parents seeking premium comfort and a higher, forward-facing weight capacity. The tangle-free, five-point harness and push-button LATCH connectors help to tightly secure your child every day. Unique features include the patented Versa-Tether® for energy management, and rear and forward facing recline for child comfort and positioning. The Marathon fits children rear facing from five to 35 pounds and children forward facing from at least one year old and 20 pounds, up to 65 pounds.
Rear Facing Child Weight: 5lbs - 35lbs.
Forward Facing Child Weight: 20lbs - 65lbs.
Child Standing Height: Up to 49"
Rear Facing Child Seated Torso Height: 9.5"- 16.75"
Forward Facing Child Seated Torso Height: 12" - 16.75"
*To measure torso height, sit child against a wall and measure from floor to shoulders. This is the most important factor besides weight in determining if a child will fit in a particular car seat.
Product Weight (lbs)
16.5
Exterior Product W x H x D (in)
19.5 x 27.5 x 25.5
Seating Compartment Height (in)
24.5
Seat Area Depth/Width (in)
9/11
Shoulder Width (in)
11.75
Harness Slot Heights (in)
10 / 12.25 / 14.5 / 16.75
Buckle Strap Depth (in)
5.25
Frontier Boulevard Companion Decathalon Diplomat Roundabout Regent Marathon
Product Code: BRIC1
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