# Kenyan long-distance runner doping violations

> Live situation record from CLSTR: https://clstr.news/situations/kenyan-long-distance-runner-doping-violations
> Updated: 2026-10-13T20:12:02.000Z. Sources: 8. Developments: 2.

Kenyan long-distance runners have faced recent disciplinary actions from the Athletics Integrity Unit (AIU) regarding anti-doping violations.

In late September 2026, Philemon Kiplimo Kimaiyo accepted a two-year suspension after an out-of-competition urine sample tested positive for chlortalidone, a prohibited diuretic and masking agent. Kimaiyo stated the substance was taken from his wife’s blood pressure medication, and because the AIU found no evidence of intentionality, the ban was set from September 2026 to August 2028.

By mid-October 2026, the AIU issued a provisional suspension to marathoner Ronald Kipkoech Korir following irregularities in his Athlete Biological Passport (ABP). These irregularities suggested the potential use of prohibited substances or methods. This case follows a broader trend of scrutiny regarding Kenyan anti-doping frameworks, with approximately 140 Kenyan athletes facing suspensions or bans since 2017.

## Timeline

### 2026-10-13: Ronald Korir provisionally suspended for suspected doping

Kenyan marathoner Ronald Kipkoech Korir has been provisionally suspended by the Athletics Integrity Unit due to suspected anti-doping violations identified via his Athlete Biological Passport.

3 sources. https://clstr.news/cluster/ronald-korir-provisionally-suspended-for-suspected-doping

### 2026-09-28: Philemon Kiplimo Kimaiyo receives two-year doping ban

Kenyan marathoner Philemon Kiplimo Kimaiyo has received a two-year ban from the Athletics Integrity Unit after testing positive for the prohibited diuretic chlortalidone.

6 sources. https://clstr.news/cluster/philemon-kiplimo-kimaiyo-receives-two-year-doping-ban

---
Cite as: Kenyan long-distance runner doping violations. CLSTR, https://clstr.news/situations/kenyan-long-distance-runner-doping-violations