Janet Guthrie is an American former racing driver. She is the first female to qualify and race in either the Indianapolis 500, or the Daytona 500, both of which she competed in during 1977. She had first attempted to enter the Indianapolis 500 in 1976 but failed to qualify. She raced in three Indianapolis 500s: 1977 through 1979. She is also the first woman to lead a lap in NASCAR Cup Series competition.

Danica Sue Patrick is an American former professional racing driver. She is one of the most successful women in the history of American open-wheel car racing—her victory in the 2008 Indy Japan 300 is the only win by a woman in an IndyCar Series race.