Dominique Maltais of Canada wrapped up the World Cup snowboard cross title by winning the last event of the season, while Pierre Vaultier of France won the final men's race.
Maltais became the first woman to win four races in a single season since 2009. She finished with 5,600 points, ahead of France's Moenne Loccoz with 4,150.
Alex Pullin of Austria had already clinched the men's title and opted to sit out the last race on Thursday.
Pullin ended the season with 4,550 points, in front of countryman Markus Schairer with 3,500.
Poor weather caused the final parallel giant slalom race of the season to be cancelled this week.