The Gigatown competition pits towns against each other to compete for points on social media sites like Facebook and Twitter.
The eventual winner will get the fastest internet in the Southern Hemisphere as well as $200,000 in funding towards entrepreneurs and innovators using the new service.
Points are scored by using Masterton's hashtag, #gigatownMTN, in various places across the web.
People can also help out their town by signing up on gigatown's website.
Mr Hart said the winner of the Gigatown competition would have a bright economic future.
"If you look at other towns [like Chattanooga, in the US] that have done this, there's a lot of money that could come into the region," he said.
It's not just small businesses that would benefit from ultra-fast broadband.
Schools, hospitals and other public services would be able to operate more cheaply and effectively, Mr Hart said.
"It's not just about Masterton, it's about how we can improve services to the whole region," he said.
Chorus and Gigatown Masterton will be holding promotions throughout the year until the end of September and the top five towns will move on to the next round.