World Marathon Champion Peres Jepchirchir Tests Positive for EPO

Peres Jepchirchir, the reigning world women's marathon champion, has been provisionally suspended by the Athletics Integrity Unit after a sample tested positive for EPO.

Jepchirchir is among the most decorated marathoners of her generation. A positive test for erythropoietin — the blood-boosting agent that has shadowed endurance sport for thirty years — against a name at the very top of the discipline is not a routine enforcement item.

Why this is an Ethiopian story

Ethiopian and Kenyan runners have divided the world's major marathons between them for a generation, and the two countries' programmes are judged, commercially, as a single East African product. Shoe contracts, appearance fees and race invitations are negotiated against a reputation that both nations share whether they like it or not.

Kenya has been under formal scrutiny from athletics authorities for years over the volume of its doping cases. Ethiopia's federation has had its own. Each case at the top of the sport raises the evidentiary burden on every clean athlete from the region — more testing, more whereabouts filings, more suspicion attached to a breakthrough result.

For Ethiopian athletes, the practical effect of a positive test by a Kenyan champion is not schadenfreude. It is a tighter market for the next Ethiopian winner who has to prove a time was earned.

Open

A provisional suspension is not a finding of guilt. Jepchirchir is entitled to request analysis of the B sample and to put her case to a disciplinary panel, and no sanction is determined until that process concludes. Neither the date of the sample nor the competition it was taken around has been made public, which matters because it determines which results are at risk of annulment.

Sources: BBC Sport, 23 October 2026