RIO DE JANEIRO, BRAZIL - AUGUST 14:  Amy Cragg of the United States, Shalane Flanagan of the United States and Desiree Linden of the United States compete during the Women's Marathon on Day 9 of the Rio 2016 Olympic Games at the Sambodromo on August 14, 2016 in Rio de Janeiro, Brazil.  (Photo by David Ramos/Getty Images)