The Queenstown Lakes District Council confirmed this afternoon that the parade would leave from the Lake Wanaka Centre at 3.30pm and travel in a circuit around Ardmore St, Dungarvon St, Brownston St and Helwick St before ending at the Cardrona office at the corner of Helwick St and Dunmore St.
An autograph session will take place with the athletes at the Cardrona office, where the community will be able to see New Zealand's first Winter Olympic medals since 1992.
Queenstown Lakes District Mayor Jim Boult said everyone was welcome to join in the celebrations.
"The parade is straight after school so we'd love as many young people as possible, especially kids, to come along and show their support for our inspirational young athletes."
Zoi and Nico arrive in Queenstown tomorrow, where they will be presented flowers from deputy mayor Calum McLeod, who will also say a few words on behalf of the community.
The athletes will then be flown by helicopter to Cardrona for a photoshoot tomorrow afternoon, while Zoi will also be the subject of a special assembly at her school - Mount Aspiring College - on Thursday morning.
Zoi won bronze in the snowboard big air, and Porteous bronze in the freestyle halfpipe at the Winter Olympics in PyeongChang.