No runner made those sounds, or hit the ground that hard to make vibrations.

And in marathons, it will slow the depletion of energy sources that causes runners to "hit the wall."

A modern hurdle will fall over if a runner hits it.

In the last year, skirts specially designed for runners have hit the market.

One was stopped by hand at the time the runners hit the tape.

A month ago, runners from Rosa's group hit on the win, place and show tickets at the world half-marathon championships.

First-aid stations from Miles 20 to 24, where runners often hit the Wall, reported just two competitors who dropped out.

The runners hit again, shaking the plane as the skids rode across the uneven ice field.

When runners hit the wall - usually around mile 18 or 20 in the course - their bodies simply stop functioning.

The runners hit a roof near the University and the pigs trotted to a halt.