 Nyorai kuenderera mberi kweiyi ndima - Pa2005 European Athletics Junior Championships muKaunas Lithuania Horna akapedza ari wechi8 mumakwikwi emamita 800. Akadzingwa muhafu yekupedzisira ye2006 World Junior Championships muAthleticsmuBeijing, uye mumutambo wokutanga we2009 European Athletics Junior Championships muKaunas, nguva dzose pamusoro pemamita 800. Muna 2009 akahwina mukombe wake wekutanga wenyika panguva yeGerman Indoor Athletics Championships. Akakunda menduru yesirivheri pa2009 na2010 German Athletics Championships. Muna 2013 Horna akahwina mukombe pamakwikwi emamita 1500 paGerman Indoor Athletics Championships, uye akadzivirira zita rake muna 2014. 