Featured in endurance race
Why do marathon runners get the runs?
It doesn't just work your leg muscles—racing is rough on your intestines, too.
What running ultramarathons and giving birth tell us about the limits of human endurance
We can all only go so far.
Compression tights might not actually help tired muscles
But you can still wear them if you want.
Why endurance athletes hit the wall
Could a pill keep you going?
Japanese Robots Will Run In First-Ever Full-Length Robot Marathon
Marathoners may sometimes seem like robots, with their single-minded focus and obsessive dedication to finishing their goal. Now some actual...
Diesel Wins Respect
Think diesel is stinky and slow? This history-making 220mph racecar aims to prove you wrong. Click inside for video
9 Horses, and You Feel Like A.J. Foyt
Competitive karting is CART for the rest of us. And the kids can kick your butt.