Runners train in Ngong, Kenya, in 2012. The country has produced the world's best distance runners for decades, and most belong to the Kalenjin people. Michael Steele/Getty Images hide caption

toggle caption Michael Steele/Getty Images

How One Kenyan Tribe Produces The World's Best Runners

  • Download
  • <iframe src="https://www.npr.org/player/embed/241895965/242412313" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript