how fast does the fastest human run
3. Thoroughbred Racehorse. The fastest thoroughbred racehorse has reached top speeds of 55mph, almost double that of Usain Boltâs 100m world record top speed. However, thoroughbredâs arenât just fast, theyâre also known for their stamina and can maintain a pace of 16 mph for 60 miles. Talk about the ultimate ultra marathoner. bigbendnow.com.