People wait to start running during the Color Run in Sydney, Australia, on Aug. 21, 2016. The Color Run, known as "Happiest 5km on the Planet", was held in Sydney on Sunday. It is a unique run competition that emphasizes the element of health, happiness and self-expression. In a typical Color Run race, participants will end up covered in a mixture of colored powders made from corn starch. 

Source : XINHUA