"We are encouraging the residents of Hunterville to find alternative forms of entertainment that do not involve innocent animals being harmed."
The organiser of the Parklee Bullride at Hunterville Shane Bird said SAFE was wrong.
"What they're saying is inaccurate. A lot of people have heard what happens in rodeos but have never seen it themselves," he said. "Come along and watch it yourselves and make up your own mind."
He didn't expect the event to be affected by SAFE's comments.
"The people that are against it never would come anyway," he said. "If anyone's inquisitive enough they'll come along and see for themselves."
It's the fourth year the event has been in Hunterville and is on private property. Mr Bird expected between 500 and 700 people to attend.
Auckland Council recently endorsed a 2008 decision by the old council to ban rodeo.