These results added to a host of medals won earlier in the Games, including a silver won by swimmer Monique Irvine (Pakuranga-Howick) in the 50m backstroke.
Irvine has been training since she was six and, now 24, she has competed in four national summer games.
"The race final was so exciting," said Irvine from LA. " I was very puffed at the end but felt so excited to know I had come second. This is my first World Games and I have liked watching all the other countries compete."
New Zealand's achievements on the track were marred by a controversial decision to disqualify the New Zealand team in the 4x100m relay.
"Japan forced our runner to step over his lane on the final leg of the race," said Special Olympics New Zealand spokeswoman Angela Day, who said the team were "robbed" of silver.
"All our New Zealand athletes, while extremely disappointed as they ran so well in the final, were gracious in defeat and congratulated their fellow competitors on the podium."
Four teams were disqualified in this race for the same reason and only two medals were awarded in this category.