American-born Russian snowboarder Vic Wild won his second Winter Olympics gold medal in Sochi after triumphing in the parallel slalom.

Wild - who became a Russian citizen two years ago and topped the podium in the parallel giant slalom final earlier this week, after seeing his wife Alena Zavarzina win bronze in the women's event - earned gold after two tight victories on Saturday.

He first overcame eventual bronze medallist Benjamin Karl, who beat Aaron March in the small final, by a narrow margin in the last-four stage and then edged out training partner Zan Kosir of Slovenia in the showpiece event.

World champion Rok Marguc and World Cup leader Sylvain Dufour were both pre-event favourites but they failed to make it past the heat stages.

In the women's event, Austrian Julia Dujmovits sealed gold after squeezing past Anke Karstens in the final.

Karstens' fellow German Amelie Kober triumphed in the small final against Italian Corinna Boccacini to emerge with the bronze.

Norway completed a clean sweep of medals in the women's 30km cross-country.

Marit Bjoergen claimed her third gold medal of the Sochi Games finishing 2.6 seconds ahead of compatriot and World Cup leader Therese Johaug.

Kristin Stoermer Steira, competing in her third Games, claimed her first Winter Olympic individual medal, finishing in bronze medal position.