محمد فرح
Four winners of the 10,000 m have completed a long-distance double by also winning the 5000 metres at the World Championships in Athletics: Tirunesh Dibaba was the first to do so in 2005, Kenenisa Bekele became the first man to do so in 2009, and Vivian Cheruiyot (2011) and Mo Farah (2013/2015) followed at the subsequent editions. Of these, only Mo Farah has achieved the feat twice, in 2013 and 2015 - either side of which he performed the same feat in consecutive Olympic Games.