It is estimated the event will inject 500 thousand dollars into the local economy.
"We have seen a great deal of interest, we are delighted to host it in Whanganui, it's a great way to showcase what we have here. So we estimate that there is a number of people possibly staying two nights in town, " says Ms Cheyne, Whanganui & Partners strategic lead destination manager.
Competitors came from as far away as Tahiti.
"So we have had 606 entries across the four races which is two days events. We reckon about 500 are from out of town and 100 from local Whanganui schools," says Ellie Heenan, Sport Whanganui events support coordinator.
The event wraps up on Friday afternoon.
Sieska Verdonk - Local Focus