He believes distance running is now more competitive than ever.
Haile Gebrselassie and Paula Radcliffe have accomplished enough to retire, but if they want to keep going, why not?
He can't escape doing his trademark move for fans.
The Olympic medalist reflects on all the running in his life.
The former middle-distance great admits more events should be held in Africa.
America's two best 800m runners will square off over 600 meters at the Millrose Games.
The marathon world-record holder isn't sure if her career is over.
She says she wants to focus on the marathon for Rio in 2016.
He's running fast again after a near-fatal bike crash.
He had been taking it easy since his Olympic win.