http://espn.go.com/sports/endurance/...2-years-doping

Rita Jeptoo, a three-time winner of the Boston Marathon and two-time Chicago Marathon champion, was handed a two-year doping ban Friday in a case that has cast a shadow over Kenya's famed distance runners.

Jeptoo tested positive for the blood-booster EPO in an out-of-competition test last September, a few weeks before winning her second straight Chicago Marathon title. Both the "A" and "B" samples were positive.

The 33-year-old Jeptoo is the biggest name among dozens of Kenyan athletes who have failed drug tests in recent years. The World Anti-Doping Agency has urged Kenya to step up its drug-testing program and is working with the east African country to help set up a national anti-doping body.