Eliud Kipchoge of Kenya, Galen Rupp of the United States and Feyisa Lilesa of Ethiopia compete during the Men's Marathon on Day 16 of the Rio 2016 Olympic Games at Sambodromo on August 21, 2016 in Rio de Janeiro, Brazil.

Vivian Jepkemoi Cheruiyot of Kenya leads the field in the Women's 5000m Final on Day 14 of the Rio 2016 Olympic Games at the Olympic Stadium on August 19, 2016 in Rio de Janeiro, Brazil.

Vivian Jepkemoi Cheruiyot of Kenya leads the field in the Women's 5000m Final on Day 14 of the Rio 2016 Olympic Games at the Olympic Stadium on August 19, 2016 in Rio de Janeiro, Brazil.

Moroccan runner Hicham el Guerrouj presents his gold medal on the podium for the 5,000m event of the Athens 2004 OG. Alongside him are Ethiopia’s Kenenisa Bekele (silver medal) on the left and Kenya's Eliud Kipchoge (bronze medal) on the right ©IOC

SINGAPORE, 21 Aug 2010 - Gold medalist Luguelin Santos of Dominican Republic (C), silver medalist Ruan Greyling of South Africa (L) and bronze medalist Alfas Kishoyan of Kenya attend the awarding ceremony after the boys 400m group A final at Bishan Stadium of the Singapore 2010 Youth Olympic Games in Singapore.

BEIJING - AUGUST 23: Wilfred Bungei (C) of Kenya wins ahead of Ismail Ahmed Ismail of Sudan and Yusuf Saad Kamel of Bahrain in the Men's 800m Final held at the National Stadium on Day 15 of the Beijing 2008 Olympic Games on August 23, 2008 in Beijing, China.

Nanjing 2014 - Gold medalist Yomif Kejelcha Atomsa (C) of Ethiopia, silver medalist Thierry Ndikumwenayo (L) of Burundi and bronze medalist Moses Koech of Kenya on the podium during the awarding ceremony of the Men's 3000m of athletics at Nanjing 2014 Youth Olympic Games in Nanjing, Jiangsu Province, Aug. 24, 2014.

Nanjing 2014 - Kenya Yuasa of Japan(C), Luba Van Den Keybus of Belgium(L) and Giarnni-Moran of Great Britain on the podium during the awarding ceremony of the Men's Horizontal Bar of Artistic Gymnastics at Nanjing 2014 Youth Olympic Games in Nanjing, Jiangsu Province, Aug. 24, 2014.

Nanjing 2014 - Gold medalist Kokeb Tesfaye Alemu (C) of Ethiopia, silver medalist Winfred Mbithe (L) of Kenya, bronze medalist Dalila Gosa of Bahrain on the podium during the awarding ceremony of the Women’s 1500m of athletics event at the Nanjing 2014 Youth Olympic Games in Nanjing, capital of Jiangsu Province, Aug. 25, 2014. 

Nanjing 2014 - Gold medalist Giarnni Regini-Moran of Great Britain (C), silver medalist Yuasa Kenya of Japan(L) and bronze medalist Lim Myongwoo of South Korea on the podium during the awarding ceremony of the men’s floor exercise of artistic gymnastics during Nanjing 2014 Youth Olympic Games in Nanjing, China’s Jiangsu Province, on Aug. 23, 2014.