Buuxi weedha soo socota: Kipyegon waxay ku guuleysatay billado dahab ah tartankii adduunka ee U18 ee 2011, iyo tartankii adduunka ee U20 ee 2012. Markii ay jirtay 18 sano, ma aysan gaarin semifinalka Olombikada London 2012, laakiin waxay ku guuleysatay tartamada da'yarta ee Olombikada London 2012.
2011 iyo 2013 World Cross Country Championships, waxayna ku dhammeeyeen kaalinta 5-aad 2013 World Championships.