Lawrence Cherono, a two-time main marathon champion and the previous world No.1 over 26.2 miles, has been banned for seven years for doping and tampering.
The 35-year-old admitted to 3 anti-doping rule violations, together with tampering for trying to mislead the investigation.
Cherono, who has a private greatest of two:03:04 within the marathon and is twelfth on the world all-time record, was suspended by the Athletics Integrity Unit (AIU) in 2022 after testing optimistic for the banned substance trimetazidine, in an out-of-competition check.
He has now obtained a four-year ban for the optimistic check and was given one other 4 years by the AIU for the tampering offence. Nonetheless, as Cherono admitted to the violations, he has been given a one-year discount to his ban.
Along with Boston and Chicago, Cherono has gained marathons in Seville, Valencia, Prague, Honolulu and Amsterdam.

Lawrence Cherono (Amsterdam Marathon)
The AIU stated: “In trying to clarify the optimistic check, Cherono initially stated he had been given the antibiotic Erythromycin and was additionally injected with an unknown substance by a health care provider to deal with abdomen issues, however then additionally tried to implicate his coaching colleagues for the failed check, claiming they had been ‘jealous of his success’.
“Nonetheless, in a subsequent written assertion, Cherono stated he had been inadvertently given Trimetazidine within the type of Carvidon tablets by his spouse – as a substitute of the painkillers he had requested – to deal with muscle ache following coaching on 22 Might 2022. In keeping with the runner, his spouse had been prescribed the Trimetazidine 4 days earlier at a medical centre.
“To help his rationalization, Cherono offered a laboratory request from the medical centre, together with hand-written particulars of medicines prescribed for his spouse, together with {a photograph} of the underside of tablets enclosed of their blister packaging. In collaboration with the Anti-Doping Company of Kenya (ADAK), additional investigations into the laboratory request and extra medical paperwork offered by Cherono as proof of his spouse’s therapy on the medical centre, revealed “a number of inconsistencies”.
“Following a request from ADAK to the medical centre in November 2022 for added info to confirm the paperwork independently, the clinic director confirmed in December 2022 that they ‘weren’t real/official paperwork from the clinic and that the data they contained was not true and correct’.
“Following this growth, the AIU stated its investigation into Cherono’s rationalization and the submitted paperwork ‘was materially obstructed and considerably undermined’, with repeated makes an attempt to acquire copies of medical data to corroborate the runner’s spouse’s alleged medical therapy proving unsuccessful. After its makes an attempt to safe the spouse’s medical data had been repeatedly impeded, the AIU – by way of ADAK – gained a courtroom order in Kenya compelling the medical centre to give up the paperwork. In response, the medical centre stated there have been no data accessible for any therapy to the athlete’s spouse since Might 1, 2022.”

Lawrence Cherono (Chicago Marathon)
On June 26, 2024, Cherono admitted to the violations in a signed letter to the AIU, marking the top of the two-year investigation.
“This resolution is testomony to the tireless and protracted efforts of the AIU in investigating doping and the reasons offered for optimistic checks,” stated AIU Head, Brett Clothier.
“Since its inception, the AIU has remained steadfast in its dedication to wash sport, and this resolution sends a robust sign to drug cheats that the AIU will go away no stone unturned in finishing up its mandate.”
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