The Kiwis and Aussies have united to take on the rest of the world in mixed triathlon at the Youth Olympics in Nanjing.

New Zealand and Australian triathletes will put aside their rivalry at the Youth Olympic Games in the Chinese city of Nanjing.

The two nations are set to combine for the mixed relay triathlon on Thursday as part of the Oceania team, which already boasts two individual medallists.

Queenslander Brittany Dutton, 16, won the first gold of the Games in the girls triathlon, while 16-year-old Aucklander Daniel Hoy took silver in the boys event in a photo finish with the winner.

Also on the team, who will face strong competition from their European opponents, is New Zealand’s Elizabeth Stallard – who came 13th behind Dutton – and Victorian Jack van Stekelenburg, who finished in 14th.

The teams are formed by combining the top-two ranked male and female athletes from each continent in the individual events.

This continues until there are not enough athletes to form continental groupings, at which stage world teams are created.

Each triathlete completes his or her own shorter triathlon – 250m swim, 6.6km bike and 1.8km run – before tagging the next athlete.

In Nanjing, there are five European teams, four America teams, three Asia teams, one Africa team, one Oceania team, and two World teams that will line up at the start line.

The Kiwis are keen to help their trans-Tasman neighbours get onto the podium.

“Don’t worry, Jack – we’ll get you one,” said Hoy on Wednesday during a photo shoot of him and Dutton wearing their medals with the Oceania team.

Dutton believes the camaraderie the two nations share gives them an edge.

“We work well with the Kiwis,” she said.

“They’re good friends and we train well together. I think we’ll do well.”