Can Kenenisa Bekele break the world record in Berlin?

An in-depth preview of the elite field ahead of Sunday’s Berlin Marathon

WATCH: How much time do carbon shoes really take off?

Professor of biomechanics at BYU gives his perspective on the benefits of carbon-plated shoes

Eliud Kipchoge wants to try an ultramarathon

The world record-holder says when he’s done with marathons, he wants to go longer