The victory took Vonn past the 36 downhill wins of Austrian Annemarie Moser-Proell, who dominated women's ski racing in the 1970s and was in the stands to watch the American equal her record in Austria last week.
"It's pretty awesome," Vonn said. "I was really nervous today actually. I've won so much here and there was a lot of pressure. The more people talk about records the harder it is to break them."
Vonn has now won 74 World Cup races in all disciplines, 12 behind the record of 86 held by Swedish men's great Ingemar Stenmark.
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(Reporting by Ed Osmond in London; editing by Ken Ferris)
