Kiplimo is the youngest ever Olympian from Uganda, having competed at the 2016 Olympics aged just 15. In 2017 he won the under-20 category at the World Cross-Country Championships. This year he won a silver medal in the senior ranks at the World Cross-Country Championships. He also has set the fastest 10km time in history though it was on a course in San Silvestre that is unratified due to the extent of its downhill sections. The time of 26:41 beat the course record previously set by Eliud Kipchoge in 2006 (26:54).