Walk, Don't Run is a 1966 American romantic comedy film directed by Charles Walters (in his final film as a director), and starring Cary Grant (in his final film role), Samantha Eggar, and Jim Hutton. It follows a travelling industrialist visiting Tokyo, and accompanying a male athlete and a female apartment tenant, during the 1964 Summer Olympics. The film is a remake of the 1943 film The More the Merrier. The title stems from the basic rule of racewalking: that competitors must not run at any point (both feet leaving the ground).