The Greater Des Moines Soap Box Derby Association is a non-profit youth racing organization for both girls and boys ages 7 - 21. The racers compete driving a gravity powered kit car in one of three divisions: Stock Division, Super Stock Division and Masters Division. The Soap Box Derby has run nationally since 1934 and locally since 1937 kids have been racing and competing down the streets and hills of Central Iowa. In 1970, due to the sport’s popularity, a permanent track facility was built in Ewing Park on Des Moines’ southside and remains there today.