Bremer is now living in Sydney but grew up at Mount Maunganui. She raced her first full Ironman in 2011, at Ironman Western Australia, which she won. Since then she has been hooked and said she loved the long training sessions.
"Speed does not come naturally to me but I have good endurance and I love the trainings, like getting out for long runs and bikes."
She has only raced Ironman New Zealand once before, finishing fifth in 2014.
Both men's and women's fields are stacked in quality and quantity as many professionals have headed across the Tasman after the 2016 Ironman Asia Pacific Championship in Melbourne were cancelled.
Californian Meredith Kessler will return to her home away from home to chase her fifth straight win in the women's race.
"The course just makes my heart sing," Kessler, the women's course record holder, said. "A cool, clear fresh water swim in gorgeous Lake Taupo, rolling bike terrain on a tougher chip seal and a run along the shoreline to streaming fans of people."
Like the men, the podium from last year is back in the form of Kiwis Gina Crawford and Melanie Burke.
Cameron Brown, 43, (Auckland) will wear the No1 bib - set aside for the top seed - for the 15th time in 19 starts at the event and will look to defend the title he won for the 11th time last year.
Brown enjoyed a fantastic first half to 2015 winning his first Ironman New Zealand in four years and second at Cairns. He is now primed for his return to Taupo. Last year's podium finishers are back also, in compatriots Terenzo Bozzone and Dylan McNeice.
Factbox:
* 32nd Ironman New Zealand
* 3.8km swim, 180km bike, 42km run
* Race starts tomorrow from 6.45am in Taupo
* More than 1300 people entered