run a mile

break into a run

To start running.

common run

Ordinary persons, things, or events.

country mile

A long way, a great distance.

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.

first mile

The initial stage of delivery of goods, etc., from the seller or producer to a distribution centre, often involving greater effort or expense.

give someone an inch and someone will take a mile

Alternative form of give them an inch and they'll take a mile.

go the extra mile

To make an extra effort; to do a particularly good job.