Athletics Integrity Unit Bans 2:04 Marathoner Philemon Kiplimo Kimaiyo for Two Years

The Athletics Integrity Unit has banned Philemon Kiplimo Kimaiyo, the Kenyan who ran 2:04:01 for second place in Hamburg last year, for two years after an out-of-competition test in July found chlortalidone, a diuretic that is prohibited in and out of competition.

The ban runs from Sept. 1, 2026, the day Kimaiyo signed a form admitting the violation and accepting the sanction, which also meant giving up his right to a hearing. The AIU’s decision, dated Sept. 17 and reported by The Standard in Nairobi, disqualifies every result since the day of the test. There has been only one race in that window, but it mattered to him. He went back to the Bogotá Half Marathon on July 26 as the defending champion and ran 1:03:53 for third, a week after he was tested. That result goes, along with any prize money attached to it.

Doping control officers collected the sample at Mwaita, in Kenya, on July 19. The first urine sample he gave was too dilute to analyze, just below the minimum specific gravity the testing standard allows, so the officers took four more before one met it. That fifth sample went to the WADA-accredited laboratory in Paris, which reported the chlortalidone on July 29.

Kimaiyo heard about the finding at an interview with the AIU on Aug. 25. He told investigators that chlortalidone meant nothing to him, and that roughly a week before the test he “had taken painkillers that belonged to his wife to treat pain that he experienced after long runs, but whose name and appearance he could not recall.” On Sept. 2 he sent in photographs, one of them showing a box of OLMECURE-CT 40, labeled as olmesartan medoxomil with chlortalidone. That combination is a blood pressure medication, not a painkiller.

The AIU wrote that it had “no evidence that the Anti-Doping Rule Violations were intentional.” Chlortalidone is a specified substance, and for a first violation where intent is not established, the rules fix the ban at two years rather than four. The decision does not go into whether he bore less than the usual degree of fault, which is the other route to a shorter sanction. WADA and the Anti-Doping Agency of Kenya can still appeal to the Court of Arbitration for Sport.

Ruth Chepngetich, the women’s marathon world record holder, was banned for three years last October over a different drug from the same category of the WADA list, diuretics and masking agents. Her sample from March 2025 held hydrochlorothiazide at 190 times the 20 ng/mL reporting limit. Her case started at four years, because the AIU found indirect intent, and she got a year taken off for admitting the charge early.

Kimaiyo’s fastest half-marathon, 58:11, came in fifth place at the 2020 Valencia Half Marathon, the race where the first four men all went under the old world record and Kibiwott Kandie won in 57:32. Three of that top five have now been banned. Kandie received seven years in June for refusing a test and then submitting a forged document. Rhonex Kipruto, third that day in 57:49, is serving five years for abnormalities in his biological passport after CAS trimmed his sanction by a year in April, and his results from September 2018 to May 2023, Valencia included, remain disqualified. Kandie’s and Kimaiyo’s Valencia results stand, because neither ban reaches back that far.

In results lists Kimaiyo usually appears as Philemon Kiplimo, which invites confusion with Uganda’s Jacob Kiplimo. The two were in the same race at the Chicago Marathon last October, when Jacob won in 2:02:23 and Kimaiyo finished eighth in 2:06:14. He has also run 27:23 for 10K on the road and 27:25.08 over 10,000m on the track. The ban keeps him out of competition until September 2028, shortly before his 30th birthday.