Identical triplets Leila, Liina and Lily Luik from Estonia will make Olympics history when they compete against each other in the women's marathon in Rio this summer. Calling themselves the "Trio to Rio" and sporting identical uniforms and blonde ponytails, the triplets are used to spectators and officials mixing them up when they're competing. The 30-year-old sisters are from the medieval city of Tartu, and they only turned pro at the relatively late age of 24.