"The rally has a huge following and is televised and captured by the international media," Whangarei District Council economic development manager Peter Gleeson said. "People come from all over the country and the world to compete and watch.
"The global television coverage reaches Australia, India, China, Japan and Europe and is worth an estimated $2.78 million so it really is great promotion for our district ... each visitor provides a positive boost for our economy by spending locally on accommodation, restaurants and activities."
It will be the first rally since the Te Matau a Pohe bridge opened, Mr Gleeson said.
The bridge will be closed to marine traffic exceeding 6.5m on April 12 from 3pm-10pm. The Pohe Island dog park will also be closed.
The rally's ceremonial start in Cameron St Mall on April 11 at 4.30pm will be preceded by the teams and their cars parading through central Whangarei and an autograph session in the mall from noon.