This weekend they will be competing for the New Zealand Motor Cup, the most prestigious trophy in New Zealand motor racing, which was first competed for in 1921. From 1953 it was awarded to the winner of the New Zealand Grand Prix held at Ardmore from 1954 and then Pukekohe from 1962 until early this century.
On it are inscribed the names of drivers who went on to win the Formula One World Championship, Jack Brabham, Jackie Stewart, Graham Hill, Keke Rosberg and other famous drivers including Stirling Moss, Bruce McLaren and Chris Amon.
Last year's winner Pedro Piquet is back to defend the title. The Brazilian son of triple Formula One World Champion Nelson Piquet was sixth fastest in practice.
Christchurch's Marcus Armstrong was the fastest local driver in fourth place, with Brendon Leitch (Invercargill) tenth and Pukekohe's Taylor Cockerton 12th.
With practice times being so close, drivers will need to qualify near the front of the grid to have any hope of success in Saturday afternoon's race and the New Zealand Motor Cup on Sunday afternoon.
Top times:
1, Thomas Randle (Australia) 60.109 seconds;
2, Jehan Daruvala (India) 60.272;
3, Richard Verschoor (Netherlands) 60.296;
4, Marcus Armstrong (Christchurch) 60.351;
5, Kami Laliberte (Canada) 60.383;
6, Pedro Piquet (Brazil) 60.394;
7, Ferdinand Habsburg (Austria) 60.413
8, Enaam Ahmed (England) 60.474;
9, Luis Leeds (Australia) 60.485;
10, Brendon Leitch (Invercargill) 60.506;
12, Taylor Cockerton (Pukekohe) 60.639.