to run · to jog · (military) to march at the double

For this race, people under the age of 35 (including 35) join the young people's group; people from 36 to 50 years old join the middle-aged group and people 51 or over join the elderly group.

Ken wasn't running.

He keeps his youth by jogging.

She is not only good at running; she is also good at singing.

That boy is running.