run up

break into a run

To start running.

common run

Ordinary persons, things, or events.

dry run

A practice or rehearsal; especially, one that goes through all the motions of a physical process but without the raw material or workpiece present.

dummy run

A trial or practice before the real attempt.

good run

Success over an extended period.

hit and run

Sexual intercourse followed by a prompt departure; a one-night stand.

hold with the hare and run with the hounds

To oppose an action or behavior and yet engage in the same action or behavior; to be a hypocrite.

learn to walk before one can run

Before one can perform a complicated task, one has to learn how to perform more simple tasks.