Dunstan is now the leading contender to take out the Eves Series with the Coronation Classic to come on March 1.
Matilda Lawrence from Mount Maunganui was a delighted winner of the women's sprint distance. She has only been competing seriously in triathlons for six months but says she has made incredible gains with proper training in that time.
"It was my first win today. I was happy with my bike. I have made massive gains on the bike in the last few weeks and it used to be my weakest one.
"I am going to have a go at Kinloch and my biggest goal this year is the Xterra cross country triathlon in Rotorua in April just after my 30th birthday. I am looking forward to it as like the hills."
Another first time winner was Jamie Shields in the under-16 super sprint category. He won in a time of 34:53, with Matthew Lochhead second and Hannah Knighton third.
Shields, 14, has been competing in triathlons since he was nine and is part of the excellent Tauranga Triathlon Youth Academy run by Chris Willett.
"I was most happy with my swim because I am usually a bit slow and I did well in my run after the bike. The hardest part was going into the head wind on the bike because I couldn't find the right gear. But I am happy to win as I usually come second or third."