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

I ran a race with him.

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.

I wonder which of the runners will come first.

That boy is running.

He keeps his youth by jogging.