Australians prevailed in both the junior and elite women's titles raced in ideal conditions around a challenging circuit.
Canberra mountain biker Gracie Elvin prevailed in the elite sprint finish from Australian Institute team-mate and GreenEdge professional Shara Gillow, with fellow UCI professional Rachel Naylan third to complete the Australian clean sweep.
The best of the New Zealanders was teenager Georgia Williams (Auckland), who enjoyed an outstanding introduction to the elite ranks to finish fifth just behind the leading four who sprinted across the line at the end of the 102km race. She was fourth in Friday's time trial.
Southland's Gabrielle Vermunt took up the challenge on the first of four 25km laps, taking in the major climb up McIntyre's Hill near Arrowtown, as she opened up a 1min 30sec lead.
Australian Bridie O'Donnell, the Fasa Bortolo professional based in Italy, took up the chase, catching Vermunt before riding solo in a break for 30km.
The peloton brought things back with a bunch of 11 riders together at the start of the final lap.
There were multiple attacks on the final climb up McIntyre's Hill, with Elvin given the perfect lead-out by team-mate Gillow in the sprint to claim the honours in 2hr 12min 39sec.
"The race was pretty hard," Elvin said after the race.
"There were some tough hills for us. There were a couple of times they turned into walls.
"There were a lot of attacks we had to cover but everyone was playing cat and mouse a bit today. We tried to keep the bunch moving and keep in control and keep everyone interested.
"There were a couple of times the group sat up but we had to keep driving to bring the break back."
Earlier, Queensland's Emily Roper outsprinted rising Alexandra cyclist Sophie Williamson and South Australia's Jessica Mundy to claim the under-19 honours.
The under-19 race over three laps of the same course gradually whittled down to a select group of five to contest the final lap.
Williamson was the sole Kiwi and got somewhat worked over by the four Australians.
