Nyree King tailed closely behind her daughter, finishing third to second-placed Ngaire Pehi.
The remaining members of the King whanau, father Dave and daughter Riana, made a strong statement winning the four-leg relay race.
Waka ama stalwart Bryce Irving and visiting Tahitian paddler Nohoarii Tahiata were second and third respectively in the men's standings.
The regatta, which took place off the Tutukaka coast, featured a strong turnout with "just under 90 paddlers and around 80 craft", race organiser Conan Herbert, son of Bo Herbert, said.
With conditions remarkably better than last year, Herbert was happy with the course layout, which ran from Matapouri to Kowharewa Bay.
"From what the paddlers said, it was a hard day on the water. It was a beautiful day but the heat made the course a little bit challenging.
"Last year, Cyclone Lusi came through and we had to postpone, so it was good to be able to run this year."
This year's race format incorporated a 30-minute head start for the woman's race competitors in order to give them a better shot at winning the overall Bo Herbert Memorial Trophy.
However, a healthy sibling rivalry plagued Rosie King's chance at the trophy. Elder brother Tupu caught up to her, and paddled alongside for a portion of time near the end of the race, before stroking off to claim top honours.