Tirunesh Dibaba is a three-time Olympic gold medalist . The Ethiopian has dominated women 's distance running . She won the 10,000 meters at last year's world championships in Berlin and was runner-up to Usain Bolt for the 100 m sprint at this summer's Olympics in Rio de Janeiro. Winning gold at the Olympics became the overriding goal for Dibaba , who underlined her dominance by winning the 5,000/10,000 double at the 2005 world championships and becoming the first woman to defend a 10,000m world title in Osaka two years later . Dibaba 's cousin Derartu Tulu won two Olympic gold medals .
Tirunesh Dibaba is a three-time Olympic gold medalist . The Ethiopian has dominated women 's distance running . She won the 10,000 meters at last year's world championships in Berlin and was runner-up to Usain Bolt for the 100 m sprint at this summer's Olympics in Rio de Janeiro. Dibaba 's cousin Derartu Tulu won two Olympic gold medals .