Whakakihia te rerenga e whai ake nei: I tiimata a Ser-Od ki te whai waahi ki nga huihuinga tawhiti i te tau 2002. I eke ia ki te ao whānui i te
2002 IAAF World Half Marathon Championships ka piki ake te tawhiti ki te marathon i te 2003 World Championships i Athletics, i reira i haere mai ia ki te 63rd me te pai o te tangata o te 2: 26: 39 haora. Ko ia te tekau ma rua i te 2004 Hong Kong Marathon, te tuatoru o Ahia ki te whakaoti i roto i te mara nui o Awherika. I tiimata tana whakataetae Olympic i taua tau i nga Taakaro Orimipia o Athens 2004. Ko ia anake tetahi o nga Mongoli e rua ki te whakataetae i te whakataetae hakinakina, i te taha o te wahine marathon Luvsanlkhündegiin Otgonbayar. I tae mai a Ser-Od i te 75th katoa me te waa o te 2:33:24 haora, tata ki te rua tekau meneti i muri i te toa.