RIO DE JANEIRO, BRAZIL - APRIL 10: Runners take part in a marathon test event for the Rio 2016 Olympic Games, at the Sambodromo on April 10, 2016 in Rio de Janeiro, Brazil. The traditional Sambodromo, normally used for the samba schools parade of the world famous Rio de Janeiro carnival, will host Marathon and Archery disciplines during the upcomuing Olympics. (Photo by Buda Mendes/Getty Images)
