Rabat - Endurance runners representing a third of the Olympic and World Championship medals won since 2001 are now suspected of doping, after thousands of blood test results were leaked from the global athletics governing body, the IAAF.

Competitors run during the men's senior race at the IAAF World Cross Country Championships in Bydgoszcz in this file photo taken on March 28, 2010.
Competitors run during the men's senior race at the IAAF World Cross Country Championships in Bydgoszcz in this file photo taken on March 28, 2010.
Katie Hall is a student at University of Wisconsin-Madison studying journalism and french.