I te 2002 World Cross Country Championships i mutu ia i te tekau ma toru i roto i te whakataetae poto, i te wa i mutu ai te kapa Kenyan ko Wambui tetahi waahanga o te whakataetae kapa. I mutu ia i te tekau ma wha i te 2006 World Cross Country Championships
, engari kāore i ranea kia wikitoria i tētahi mētara ki te kapa.