And that’s just distance runners. Catch a sprinter smashing a speed record and they look like they could keep up with a car chase. The current fastest human in the world is Usain Bolt, who can run at ...

It’s an age-old question: how fast can the average human actually run? We’ve all witnessed those awe-inspiring displays of speed and endurance in races like the Olympics, leaving many of us wondering ...

From muscle fibers to mental grit, here’s the science behind why some bodies can endure ultramarathons, while others hit the wall far sooner. Ultramarathons sit at the far edge of what the human body ...