Participants run past the Tiananmen gate, with a portrait of China's late leader Mao Zedong hanging on it, during the Beijing International Marathon in Beijing, China, September 20, 2015. About 30,000 runners participated in the annual running event. (Photo by Kim Kyung-Hoon/Reuters)





Participants run during the Beijing International Marathon in Beijing, China, September 20, 2015. (Photo by Kim Kyung-Hoon/Reuters)





A participant runs while dressed as the Monkey King, a character from the Chinese classical novel “Journey to the West”, during the Beijing International Marathon in Beijing, China, September 20, 2015. (Photo by Kim Kyung-Hoon/Reuters)





Participants run past the Tiananmen gate during the Beijing International Marathon in Beijing, China, September 20, 2015. (Photo by Kim Kyung-Hoon/Reuters)





Participants jumps to pose to photographers as they run past the Tiananmen gate during the Beijing International Marathon in Beijing, China, September 20, 2015. (Photo by Kim Kyung-Hoon/Reuters)





A woman wearing a maid's costume runs in the Beijing International Marathon in Beijing, China, September 20, 2015. (Photo by Kim Kyung-Hoon/Reuters)





Participants run past the Tiananmen gate during the Beijing International Marathon in Beijing, China, September 20, 2015. (Photo by Kim Kyung-Hoon/Reuters)





Participants stretch their bodies as they pose for pictures before the Beijing International Marathon in Beijing, China, September 20, 2015. (Photo by Kim Kyung-Hoon/Reuters)





A man, carrying his pet dog on a pram, watches runners on the street during the Beijing International Marathon in Beijing, China, September 20, 2015. (Photo by Kim Kyung-Hoon/Reuters)





Participants run past the Tiananmen gate during the Beijing International Marathon in Beijing, China, September 20, 2015. (Photo by Kim Kyung-Hoon/Reuters)





A participant, wearing a mask, runs past the Tiananmen gate during the Beijing International Marathon in Beijing, China, September 20, 2015. (Photo by Kim Kyung-Hoon/Reuters)





Participants run in the Beijing International Marathon in Beijing, China, September 20, 2015. (Photo by Kim Kyung-Hoon/Reuters)





Women cheer at the runners as a paramilitary policeman stands guard during the Beijing International Marathon in Beijing, China, September 20, 2015. (Photo by Kim Kyung-Hoon/Reuters)





A boy rides a scooter during the Beijing International Marathon in Beijing, China, September 20, 2015. (Photo by Kim Kyung-Hoon/Reuters)