Eliud Kipchoge and Kenenisa Bekele through the years 

Kenenisa Bekele of Ethiopia, Eliud Kipchoge of Kenya and Edwin Cheruiyot Soi of Kenya compete in the Men's 5,000m Final of the Beijing 2008 Olympic Games (Photo by Michael Steele/Getty Images)

Kenenisa Bekele of Ethiopia, Eliud Kipchoge of Kenya and Hicham El Guerrouj of Morocco during the medal ceremony of the men's 5,000m final at the 9th IAAF World Athletics Championship in 2003 (Photo by Micahel Steele/Getty Images)

Eliud Kipchoge of Kenya, Kenenisa Bekele of Ethiopia and Edwin Cheruiyot Soi of Kenya stand on the podium during the medal ceremony for the 5,000m Final of the Beijing 2008 Olympic Games (Photo by Julian Finney/Getty Images)

Elite men's winner Eluid Kipchoge of Kenya (C), second place Stanley Biwott of Kenya and third place Kenenisa Bekele of Ethopia pose after the 2016 London Marathon (Photo by Alex Morton/Getty Images)

Elite Men's winner Eluid Kipchoge of Kenya, second place Stanley Biwott of Kenya and third place Kenenisa Bekele of Ethopia after the 2016 London Marathon (Photo by Alex Morton/Getty Images)