Teretonga is a 2.570 km (1.597 mi) motor racing circuit situated 8 km (5.0 mi) south-west of Invercargill, New Zealand. It is home of the Southland Sports Car Club. The circuit was established in 1957 and is the southernmost FIA-recognised race track in the world. It is also the country's oldest purpose-built venue.

The Formula Regional Oceania Championship is New Zealand's premier formula racing category. The series includes races for every major trophy in New Zealand circuit racing including the New Zealand Motor Cup and the Denny Hulme Memorial Trophy. The cars are also the category for the New Zealand Grand Prix – one of only two races in the world with FIA approval to use the Grand Prix nomenclature outside Formula One. The series was formerly known as the Toyota Racing Series until 2023.