On August 30, 2026, Peres Jepchirchir gave everything she had to win the Sydney Marathon, fighting her way to the front before pulling away from her closest rival to claim victory in 2:18:31. But less than two months later, that victory is under scrutiny after a drug test collected at her home in Kenya before the race reportedly returned an adverse analytical finding for EPO. The finding led to a provisional suspension, but fresh details about the testing visit have raised questions about what happened when officers arrived at her home and why they reportedly waited around two hours before gaining access.

The Athletics Integrity Unit announced on October 23 that Jepchirchir had been provisionally suspended after an out-of-competition sample collected in Kenya. Her agent, Gianni Demadonna, told LetsRun.com that the sample was collected on July 17, around six weeks before the race. The AIU’s announcement confirmed the finding and suspension, but did not give the exact collection date. It was Demadonna’s account of the visit that brought those details to light.

According to Demadonna, the doping-control officers initially struggled to enter Jepchirchir’s home because a security guard would not let them in. He said around two hours passed before a person associated with the AIU in Kenya contacted him and warned that action could be taken if Jepchirchir did not open the door. Demadonna then called the runner to ask why she had not allowed the officers inside.

The exchange, as recounted by Demadonna to LetsRun.com, centered on whether Jepchirchir knew who was waiting outside. The agent said she told him, “Because they didn’t say who they are.” He replied that they were doping-control officers and urged her to open the door. According to his account, the officers eventually gained access and collected the sample.

That explanation raises the possibility that the delay began with a misunderstanding about who was at the door. So far, the detailed description of the encounter has come through her agent rather than a public statement from the athlete herself.

Demadonna said he was shocked when he learned about the adverse finding. He told LetsRun.com that Jepchirchir had undergone doping controls both in and out of competition during her career and that he had trusted her after working with her for 13 years. He also said he felt terrible about the situation and believed athletes who use performance-enhancing drugs should be disqualified.

The agent also wondered whether the pressure of returning to competition after an injury might have played a role, although he stressed that he did not know why the finding had occurred. Jepchirchir withdrew from the London Marathon in April 2026 after suffering a stress fracture. Demadonna speculated that watching other runners produce fast performances while she was recovering might have affected her, but he offered no evidence to support that theory.

Sydney Marathon organisers also responded to the suspension, saying they were “extremely disappointed” by the news while stressing that Jepchirchir is entitled to due process. They reaffirmed their stance on fair competition, declaring, “Our commitment to clean sport is unwavering.” The organisers said they would not comment further on the case until the process had concluded.

The outcome could also affect the Sydney podium. Jepchirchir finished more than three minutes ahead of fellow Kenyan Irine Cheptai. Her result has not been officially changed, but if an anti-doping violation is established and the Sydney performance is disqualified, Cheptai could be promoted to first place, subject to the final decision and applicable rules.

Under Abbott World Marathon Majors rules, athletes who receive a doping ban of three months or longer can face a lifetime ban from all eight Majors. While that consequence would depend on the outcome of Jepchirchir’s case and the applicable rules, her provisional suspension has raised wider questions about the future of Kenyan distance running and the growing number of doping cases involving some of the country’s best-known athletes.

Kenya’s doping cases put distance running under scrutiny

Kenya is celebrated worldwide for producing Olympic champions and elite marathon runners, but a series of high-profile doping cases has put the sport’s credibility under increasing scrutiny. According to Reuters, the Athletics Integrity Unit (AIU) has sanctioned more than 140 Kenyan athletes since its establishment in 2017. Jepchirchir’s case adds to that troubling record, particularly because she is an Olympic champion and a world marathon champion.

Her suspension also follows cases involving other prominent Kenyan distance runners, including Ruth Chepngetich and Albert Korir. Chepngetich, the women’s marathon world-record holder, received a three-year ban in October 2025 after admitting anti-doping rule violations involving hydrochlorothiazide. A sample collected on March 14, 2025, contained the substance. Her world record of 2:09:56, set at the Chicago Marathon in October 2024, remained intact because the performance fell outside the period covered by her disqualification.

The cases continued into 2026, when Korir, the 2021 New York City Marathon winner, received a five-year ban after admitting anti-doping violations involving CERA. The AIU reported that it had been detected in three out-of-competition samples collected in Kenya in October 2025. 

Together, these cases have intensified pressure on athletics authorities to strengthen testing, enforcement and education while protecting athletes who compete cleanly.