Mikaela Shiffrin has smoothly navigated a bumpy course to easily win the women's slalom at the World Cup finals in front of her home US fans in Sun Valley.

The first-run leader, Shiffrin found another burst to finish in a combined time of 1 minute 45.92 seconds and beat Lena Duerr of Germany by 1.13sec, with Andreja Slokar, of Slovenia, third in Thursday's race.

Following up her 100th World Cup race during a slalom in Italy in February, win No.101 was a consummate one. Fittingly, there were kids in the crowd dressed in puppy outfits — a nod to Disney's "101 Dalmatians."

It's been an injury-marred season for Shiffrin, who's competing in only the slalom at finals, but another triumphant one.

The 30-year-old Shiffrin has missed four slalom races this season which took her out of the running to retain her title in the discipline, but she still finished in fourth place in the slalom standings.

Croatian ski racer Zrinka Ljutic was 10th in Thursday's race and captured the season-long slalom title race over Katharina Liensberger of Austria.

For Shiffrin, a painful season is over. She's worked her way back from a serious giant slalom crash in Killington, Vermont, in late November, where she suffered a deep puncture wound that caused severe trauma to her oblique muscles.

The crash led to emotional trauma, too, leaving her with post-traumatic stress disorder in the giant slalom.

Over her career, Shiffrin has finished first, second or third in a World Cup slalom race in 89 of 118 starts, which is a 75.4 per cent podium rate. She's won 64 times — a 54.2 per cent victory rate.