Sarah Gillespie, of Lake Hawea, claimed the queen's tiara, while New Zealand-born Dewi Stanczak, of the United States, claimed the king's crown in the men's event.
The skiers won their titles for carding the best overall performances in the three "cross-mountain" disciplines of expression session freeriding, banked slalom racing and the big air contest, held during Saturday and Sunday at Treble Cone.
Gillespie's wins in the freeriding expression session and big air contests, and third placing in the banked slalom race, secured her the women's crown.
She edged Wanaka skier and former New Zealand Winter Olympic 2006 giant slalom representative Nicola Campbell into second place.
The men's competition across the three disciplines was a tightly contested affair: Stanczak's win in the big air event clinched him the title, after his third placing in the freeride session and eighth in the banked slalom.
University of Otago student Claire Nash was the best female snowboarder in the two-day event, while Eli Pope impressed with his aerial moves in the men's snowboard big air contest and Austen Butler showed versatility in the freeride session.
