This is because it is caused by a depletion in the body's store of glycogen — a type of glucose that is stored in liver and muscle tissue.Related: What causes you to get a 'stitch in your side'? ...

If you do some maths, you can easily see why many runners hit the wall around the 18- or 20-mile mark. Our bodies store about 1,800 to 2,000 calories worth of glycogen in our muscles and liver.

Women tended to hit the wall slightly sooner than men — at 29.3K vs 29.6K — but their bad patch lasted slightly less distance than the men’s — 9.61K vs 10.7K.

I've never hit the wall before, but I've met enough marathon runners to know its lore. It's common for people to feel physically and mentally burned out toward the end of the marathon, at anywhere ...

But the taxed Tigers bullpen continued to leak. The Nationals put the game away in the eighth, scoring twice off reliever ...

Larson blamed himself for the miscue on a day two-time Indy 500 winner Takuma Sato also crashed early in the session and a potential multi-car crash was narrowly avoided Thursday afternoon.