Nina Rillstone finished a creditable 13th in the marathon at the world championships in Osaka in 2007. A former leading New Zealand track runner turned marathon runner. Nina won the New Zealand 1500m and 3000m titles in 2001 and the New Zealand 3000m and 5000m titles in 2004. She holds the New Zealand half marathon record. Nina represented New Zealand at the 2005 world half marathon championship in Edmonton finishing and at the 2006 world cross country championship in Fukuoka finishing 15th in the long course race.