'I'm not retiring' - Kipchoge's marathon world tour

For more than two decades, Eliud Kipchoge ran with history on his back and won almost everything there was to win.

- 

He rewrote what the human body was believed capable of and became, by near-universal agreement, the greatest marathon runner ever.

Now the 41-year-old says the chase for medals and validation is over.

"What I am doing is not retiring," he says. "I am evolving. I am running for purpose."

Kipchoge plans to take his running to the edges of the world with the Eliud Kipchoge World Tour - not to prove his greatness, but to give it away.

Over the next two and a half years, the two-time Olympic champion will complete a marathon on all seven continents

"Running is the most universal sport," he tells Newsday on the BBC World Service.

"It connects us all. With this project, I want to compete not only for records, but for the people.