Kammala jumla mai zuwa: Kodžo ya fara horo a Mrkonjić Grad tare da Atletski Klub "Petar Mrkonjić". A ƙarshen aikinsa, za a kira shi "Mafi kyawun Athlete na Mrkonjić Grad", sanarwa sau ɗaya a shekara, a lokuta tara. A cikin
Marathon na maza a Wasannin Olympics na 2000, Kodžo ya gama a matsayi na 78 daga cikin masu kammala 81 a cikin lokaci na 2: 39: 14 (hours: minutes: seconds). A shekara mai zuwa, ya gama tseren marathon na maza a gasar zakarun duniya ta 2001 a wasan motsa jiki a cikin mafi kyawun lokacinsa na 2: 35:47. Ya kuma lashe 2001 Podgorica Marathon a cikin 2:30:11.