People run (4)
I believe the answer is:
race
This clue is a double definition.
'people' is the first definition.
(people can mean a national group or race)
'run' is the second definition.
(I know that run can be written as race)
(Other definitions for race that I've seen before include "Career - people" , "People; dash" , "Competitive speed trial" , "Contest; nation" , "Contest; zoom" .)