Kipyegon’s time initially read as 4:06.91, but was later adjusted to 4:06.42. Nike has explained what happened.

If you notice an ache or irritation crop up during a run, and it lasts more than just one workout or two, or if it goes away but then comes back when you run again, Fijas suggests getting it checked ...

Bill Dellinger, Olympic bronze medalist in the 5,000 meters, mentor to the legendary Steve Prefontaine, and for more than 30 ...

How to do it: Start on all fours with a neutral spine, knees under hips and wrists under shoulders. Keeping back flat, use ...

Here at Runner’s World, we’ll be watching the attempt closely — and you can follow along with us right here.

Kipyegon shaved 1.22 seconds off her previous best of 4:07.64 (though her time in Paris is not world record eligible). No ...

On Thursday at the Stade Charléty in Paris, Faith Kipyegon ran the fastest recorded mile ever for a woman, stopping the clock ...

Run clubs are content mills.” “They’re full of runners chasing social media clout.” “They say ‘all paces welcome,’ but their ...

I visited the champion at her training camp in Kenya. Here’s what I learned and what it will take for her to succeed.

The answer popped up when I was scrolling through Runner’s World’s brand-new Guide to Strength Training, which includes a ...

Revolutionary new engineering and materials lead to big running economy gains. Hi, Team.