Joe Greer
Anne Scott
Lee Merrick
Edward 'Eddie' Greer
Pop Greer
Spud Connors
Billy Arnold
Jim
Fred Frame
Ralph Hepburn
Wilbur Shaw
Shorty Cantlon
Mel Keneally
Stubby Stubblefield
Jack Brisco (uncredited)
Red - Joe's Mechanic (uncredited)
Third Announcer (edited from 'Indianapolis Speedway') (uncredited)
Racetrack Official (uncredited)
Replaced Driving Mechanic (uncredited)
Track Doctor (uncredited)
Fred Guisso (uncredited)
Red - Eddie's Pitman (uncredited)
Harry Hartz (uncredited)
Second Announcer (uncredited)
Announcer at Tote Board (edited from 'Indianapolis Speedway') (uncredited)
Spider Matlock (uncredited)
Tom Beal - Counterman (uncredited)
Mrs. Ruth Connors (uncredited)
First Radio Announcer (edited from 'Indianapolis Speedway') (uncredited)
Paul Pardee (uncredited)
Bryan Salspaugh (uncredited)
Lou Schneider (uncredited)
Dick Wilbur (uncredited)
Assistant Pitman (uncredited)