Tuhia he haere tonu mo tenei irava - I whakataetae ano a Tanigawa i nga whakataetae hawhe marathon: i wini ia i nga mētara hiriwa takitahi me te roopu i te 1993 IAAF World Half Marathon Championships ka wini i te 1994 Sapporo Half Marathon me te 1996 America's Finest City Half Marathon. Ko ia te toa parahi a te roopu i te IAAF World Half Marathon Championships 1994
, i mutu ai ia i te tekau.