Calling all parents! Forest Park Kiwanis has joined forces with the All American Soap Box Derby to host a Derby Day on Sat., May 9, 2015 along the Circle Avenue Bridge. Please visit here for more information or visit - There wil be three racing divisions competing. Since 1934, Soap Box Derby is a fun competitive youth racing program for boys and girls ages 8-18. It encourages close parent/child activities in constructing a soap box car and supervising their child in piloting the car.