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BEIJING, CHINA - AUGUST 28: Athletes pass the Beijing National Stadium during the Women's 20km Race Walk final on day seven of the 15th IAAF World Athletics Championships Beijing 2015 at Beijing National Stadium on August 28, 2015 in Beijing, China. (Photo by Cameron Spencer/Getty Images)

BEIJING, CHINA - AUGUST 28:  Athletes pass the Beijing National Stadium during the Women's 20km Race Walk final on day seven of the 15th IAAF World Athletics Championships Beijing 2015 at Beijing National Stadium on August 28, 2015 in Beijing, China.  (Photo by Cameron Spencer/Getty Images)