There is also the option of entering the duathlon or stand alone run/walk, mountain bike or kayak events.
The New Zealand Secondary Schools Multisport Championships are part of the day and 100 students from around the country will come together to represent their schools.
"All different age groups will be taking part. For the younger ones, it is providing an opportunity to take part in a safe and beautiful environment.
"Having everything in the same location makes it easy for people to feel the camaraderie, learn from a young age, and be inspired to go further and challenge themselves," he said.
More than 1500 people will be in the area on the day, either taking part or supporting those who are.
It is not too late to get in on the action, as registrations are being taken at The Holiday Inn between 3pm and 6pm tomorrow.
Details:
* What: ThermaTech 3D Rotorua
* Where: Redwoods/Lake Tikitapu
* When: Sunday