Teams competing in the six-person 500m classes will also have to navigate their way through a hairpin turn at the halfway mark.
Waka Ama New Zealand chief executive Lara Collins said the event had "snowballed" since it started 15 years ago.
"Everyone is excited, there is a real great atmosphere. There is no cellphone coverage out here so once the kids realise that you see them start talking and interacting with each other which is really neat."
She said Lake Tikitapu provided a great venue for the event and organisers were looking forward to the next four days.
John Paul College Waka Ama manager and school board member Eugene Berryman-Kamp said his students were feeling nervous but excited ahead of the race.
"The sport has grown really well at the school and we have a strong foundation of students who are helping grow interest."
John Paul College has five crews competing at this year's event.
- For the full story, see tomorrow's edition of the Rotorua Daily Post.