GARMISCH-PARTENKIRCHEN, Germany — Lindsey Vonn won her first Super-G race in two years with a dominant performance Sunday to extend her overall World Cup lead.

The win was a major boost two days before another super-G kicks off the World Championships in Val d'Isere, France.

"I am in good form and I have a lot of self-confidence," said Vonn, who also won Friday's slalom. "But I don't consider myself a great favorite for the super-G in Val d'Isere. The downhill and the super-combi are my goals."

Vonn, who earned her fifth win of the season, also tied Tamara McKinney's American women's record of 18 career victories.

The American tamed the demanding redesigned Kandahar course in 1 minute, 22.16 seconds, beating Anja Paerson of Sweden by .39 seconds. Another Swede, Jessica Lindell-Vikarby, who won the previous super-G in Cortina d'Ampezzo, Italy, was .72 back in third place.

Vonn also became the first winner on the new course, rebuilt for the 2011 World Championships. The women's race was originally slated for Saturday but had to be postponed because of fog. A men's downhill, also scheduled for Saturday, was also called off.