pace
n. C / U B2 Upper Intermediate Oxford US //ˈpeɪs// pace
n. the speed at which someone walks, runs, or does something. It can also mean a single step you take while walking.
n. the rate of speed at which an activity or movement proceeds; alternatively, a single step taken in walking or running.
She walked at a fast pace to catch the bus.
The project is moving at a slow pace because we are waiting for the final budget approval.
The marathon runner maintained a steady pace for the first twenty miles, carefully managing his energy reserves before the final sprint toward the finish line.
Usage
Often used with the preposition 'at' ('at a steady pace'). When used as a measure of distance, it is countable.