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Joshua Cheptegei of Uganda set a world best in the 15 km on 13 January 2018, clocking 41:00 in a road race in Valencia, Spain. The previous record had been set by his compatriot Moses Kipsang in 2013. Cheptegei's time is the third fastest ever recorded in the 15 km, behind only Kipsang and Hicham El Guerrouj.