Peres Jepchirchir, the reigning world marathon champion, faces suspension after an EPO test. The Athletics Integrity Unit announced the suspension following an out-of-competition test in Kenya. Jepchirchir won the Sydney Marathon in August, her first race of the season.

The suspension allows Jepchirchir to respond to the allegations and contest the finding. If sanctioned, she could forfeit her Sydney Marathon winnings. EPO boosts red blood cell production, enhancing endurance. Kenya has a history of doping allegations, with over 140 athletes sanctioned since 2017. Read more culture coverage.

Kenya's anti-doping efforts are under scrutiny as Nairobi prepares to host the World Athletics Championships in 2029. The Anti-Doping Agency of Kenya aims to conduct 5,000 tests by the end of 2026, including overseas athletes. Jepchirchir's case adds to Kenya's doping challenges. Related: Tokyo Marathon Champion Ruti Aga Banned for Six Years.

This original Runner World brief is based on reporting from Canadian Running. Visit the source for its complete reporting, context and any later corrections.