"If we can come out of our comfort zone and do something like this, hopefully they can come out of their comfort zone and stop being violent towards women," said Mr Register.
Detective Sergeant Bill van Woerkom said: "Preventing family violence is at the heart of what we do."
Mr Register said there had been an increase in family violence reports in the last year, which was a positive step.
"They're showing the first step of wanting to get out of that circumstance," he said.
The group will leave Masterton at 8am and aim to be in the town by noon for White Ribbon celebrations in Library Square.
Violence Free Network Wairarapa co-ordinator Gerry Brooking said about 20 teams were competing in a relay race this year, and there would also be stalls and a free sausage sizzle from 11am.
She said it was great the police were showing their support for the cause.
"They take family violence seriously and it's a major social issue for Wairarapa," she said.
"It's certainly part of the community effort to reduce violence."