She could still hear the echo of the horse's hoof beats.

Rapid hoof beats told her that the travelers were approaching very quickly.

Harkness sat at the table until long after the hoof beats had faded.

Medical students are often told, "When you hear hoof beats, think horses, not zebras".

After only two or three minutes, he heard the sound of hoof beats, and a rider came into view.

They heard a horse whinny, and a moment later there were hoof beats.

And shot away in a thunder of hoof beats.

At the sound of hoof beats, he jumped up.

And then a sharp crack through the air, beneath the sound of hoof beat and wind.

Then, at the sound of approaching hoof beats, he knew danger once again raced after them.