Ruth Chepngetich Given Three-Year Ban After Doping Violation

MONACO, October 23, 2025 — Kenya’s women’s marathon world-record holder, Ruth Chepngetich, has been banned from competition for three years by the Athletics Integrity Unit (AIU), following a positive test for the banned diuretic hydrochlorothiazide (HCTZ). 

What happened

The AIU found that in an out‐of‐competition sample collected on March 14 2025, Chepngetich’s urine contained HCTZ at a concentration of approximately 3,800 ng/mL — far above the World Anti-Doping Agency’s minimum reporting limit of 20 ng/mL. 

Initially, Chepngetich denied wrongdoing and could not provide a credible explanation during early interviews. Later, she claimed she had taken her housemaid’s medication while unwell — a pill that she said she did not realise contained the prohibited substance. 

The AIU described her explanation as “hardly credible” and noted that evidence extracted from her phone — including messages and images related to other banned substances such as testosterone — raised further suspicion. 

Because Chepngetich admitted to the anti-doping violation and accepted the sanction, the four-year standard ban for “indirect intent” was reduced to three years. Her ban is backdated to April 19 ,2025, and runs until April 19 ,2028. 

What stands and what doesn’t

Importantly for Chepngetich’s legacy, all of her performances and records achieved before the March 14 positive test remain valid. That includes her world-record time of 2:09:56, which she set at the Chicago Marathon in October 2024. 

Broader implications

The case reinforces the view that even elite athletes are subject to the strict doping rules enforced by the AIU and WADA and that a positive test carries reputational risks, even if prior records remain intact. For Kenya — a powerhouse in long-distance running — the incident adds to a mounting list of doping concerns, and the government has previously committed millions of dollars toward stronger anti-doping programmes.  For the sport at large, the case may trigger greater scrutiny of elite marathon performances, especially those achieved rapidly after earlier benchmarks.