Why are olympic runners wear yellow shoes?

Answer 1

The athletes get free shoes and clothing from different brands. The yellow shoes are Nike and are made to custom fit each individual athletes feet by Nike labs & engineering. Nike makes sponsorship deals with all types of athletes from all countries of the world. Some are really small deals that just include a few pairs of shoes and clothing for the athlete and some are large deals that include millions of dollars with shoes and clothing but most are somewhere in between. After all, the marketing department at Nike wants publicity and all the yellow shoes on 90% of the best athletes in world at the most world watched event is a pretty good way to get it!! The "yellow" on the shoes is 100% marketing!!