Paul Newman (Frank Capua),
Richard Thomas (Charley),
Robert Wagner (Lou Erding),
Karen Arthur (Miss Dairy Queen),
Ray Ballard (Trombone Player (uncredited)),
Harry Basch (The Stranger (uncredited)),
John Bryant (Well-Wisher at Indy Victory (uncredited)),
Barry Ford (Bottineau),
Clu Gulager (Larry),
Robert Shayne (Well-Wisher at Indy Victory (uncredited)),
David Sheiner (Leo Crawford),
Bobby Unser (Himself),
Joanne Woodward (Elora), Bobby Grimalt (Himself (uncredited)), Tony Clayton (The Girl (uncredited)), Tony Hulman (Himself), Allen Emerson (Desk Clerk (uncredited)), Dan Gurney (Himself (uncredited)), Marianna Case (Motorcycle Girl (uncredited)), Roger McCluskey (Himself (uncredited))