Sultan Haydar qualified for participation in the marathon event at the 2012 Summer Olympics but managed only 72nd place with a slow time of 2:38:26 hours. She ended the year with a third-place finish at the Istanbul Marathon. In her first marathon of 2013, she came third at the Rome City Marathon with a time of 2:27:10 hours. On November 17, 2013, Sultan Haydar repeated her third-place success at the Istanbul Marathon finishing with 2.29.40 after her countrywoman Elvan Abeylegesse.