at a run

I moved at a dead run for most of two days.

He took off at a run, the rest of us following.

He led his men at a dead run toward the sound.

They hit the street before them at a run and kept running.

With that, he left the room almost at a dead run.

He made it to the front of the building at a dead run.

Quite suddenly, two of them started toward us at a run.

They reached level ground and started off at a run.

Others further down the hall started moving, all of them, at a near run.

Then he was gone at a run toward the fight.