Since 1900, when women first began competing in the Olympic Games, there have been many unforgettable moments.
Boston Marathon: Ethiopian Lelisa Desisa was the 2013 winner of the men's marathon. Kenyan Rita Jeptoo won the women's race. Americans finished fourth in both the men's and women's marathon.
Geoffrey Mutai, of Kenya, won the Boston Marathon on Monday with the fastest time in history, but an IAAF rule will keep it out of the record books.