The Powder Puff Derby was the name given to a transcontinental air race for women pilots inaugurated in 1947. For the next two years it was named the "Jacqueline Cochran All-Woman Transcontinental Air Race" (AWTAR). It was dubbed the "Powder Puff Derby" in reference to the 1929 Women's Air Derby by humorist and aviation advocate Will Rogers.
In 1977, rising costs, insurance premiums, and diminished corporate sponsorship saw the competition come to an end after thirty years.
Read about the original race in: Powder Puff Derby of 1929: The True Story of the First Women's Cross-Country Air Race Gene Nora Jessen, 2002