Nyora kupfuurira kweiyi ndima - Ser-Od akatanga kutora chikamu mumakwikwi akareba-kure muna 2002. Akaita mutambo wake wekutanga pasi rose pa2002 IAAF World Half Marathon Championships
uye akawedzera chinhambwe kusvika kumarathon pa2003 World Championships in Athletics, kwaakauya wechi63 aine nguva yake yakanakisisa ye2:26:39 maawa. Akanga ari wegumi nembiri paHong Kong Marathon ya2004, wechitatu weAsia kupedzisa mumunda weAfrica. Akaita mutambo wake wekutanga weOlympic gore iroro kumaOlympics a2004 muAthens. Akanga ari mumwe wevaMongolia vaviri chete kuti vakwikwidze mumakwikwi emitambo, pamwe chete nemukadzi wemarathon Luvsanlkhündegiin Otgonbayar. Ser-Od akauya wechi75 pakupedzisira nenguva ye2:33:24 maawa, anenge maminitsi makumi maviri kumashure kwemukundi.