Her greatest achievement followed that September when she ran at the 1992 IAAF World Half Marathon Championships and claimed the silver medal behind home favourite Liz McColgan, recording a lifetime best of 69:21 minutes for the event. The Japanese women's team including Miyoko Asahina and Eriko Asai were easily the champions, with their combined time being over two minutes faster than the British. As of 2014, this remains the only time that Japanese women have won that title.