Guide to Seafair's 42nd Annual Denny's Seafair Milk Carton Derby Boats made of milk cartons that float? With people aboard! Aye, aye! It's the 42nd annual Seafair Milk Carton Derby at Green Lake on July 14. Still thinking about entering a boat? Registration is open until 11:59pm on July 12!
Registration Open for Seafair Milk Carton Derby 2012Nearly 100 colorful milk carton boats of all shapes and design will compete on the waters of Green Lake for $10,000 in prizes at this annual Seafair event! The Derby is highlighted by a full day of "competition" as children, adults, families and businesses build milk carton watercraft for show and racing.