The official world records in the 5000 metres, or 5000-metre run, are held by Joshua Cheptegei with 12:35.36 for men and Beatrice Chebet with 13:58.06 for women.
Former women's world record holder Tirunesh Dibaba (right) leading another former world record holder Meseret Defar (centre) at the 2012 Olympic 5000 m final