Walk Don’t Run is a completely entertaining, often hilarious romantic comedy spotlighting as a matchmaker a deliberately mature Cary Grant at the peak of his comedy prowess. The fast-moving and colorful production pegs its laughs on a Tokyo housing shortage during the 1964 Olympics [from a screen story by Robert Russell and Frank Ross].
Grant is outstanding as the middle-aged and distinguished English industrialist who arrives two days before his Tokyo hotel suite will be available. Noting an apartment-to-share sign, he finds it to be the diggings of prim, schedule-conscious Samantha Eggar. She is engaged to a stuffy embassy functionary, played by John Standing, with whom Grant has already had a run-in.
Jim Hutton, a member of the US Olympic walking team (hence the title), is also awaiting quarters, so he, too, winds up in Eggar’s pad.