Reebok Billboard Gives You Free Shoes If You Run Fast Enougheebok has a cool new billboard in the capital city of Stockholm, Sweeden. The ground level billboard has a radar gun on it and some shoes inside of it and it challenges passersby to see if they can unlock the shoes. If a person runs fast enough by the billboard a door to a shoe will unlock and the speedster can go pick up a new pair of Reebok kicks. We are not sure what the speed you need to get to is. It looks like in the video 18 KMH is the lowest "winning" speed which translates to 10 MPH.