Stiffler made her debut in the Cross-Country World Cup in November 2011 in Kuusamo , where she reached 49th place in the sprint. She achieved her first World Cup point with 30th place in the sprint in Otepää in January 2012 after winning her first race in the Alpine Cup in the Zwiesel sprint the week before . She achieved further points in World Cup sprints with place 24 in Szklarska Poręba in February 2012, in Québec in December 2012 and in January 2014 again with place 24 in Szklarska Poręba. Stiffler achieved her best placement in a World Cup distance race in January 2012 in Otepää with 47th place over 10 km classic. In the Alpencup in February 2012 in Campra , she achieved another sprint podium finish with third place.
Switzerland
Zwiesel