Pacing

Pacing is the rate of movement or tempo.  We know "pacing" as walking back and forth.  Well thats the true meaning. "A step made in walking a stride". Pacing can also mean the even spreading out of  strength or time, for example in a longer-distance track and field race , so that they don't burn themselves out. To keep a steady time

Runners pace so that they don't burn themselves out.