Running News Daily

Ethiopian marathon star Ruti Aga has been handed a six-year suspension by the Athletics Integrity Unit (AIU) after testing positive for methylprednisolone and being found guilty of tampering with an anti-doping investigation by submitting a forged medical document.

The former Tokyo Marathon champion tested positive for the prohibited substance after winning the Meishan Renshou Half Marathon in China on March 15, 2026, in a time of 1:08:04. At the time, Aga was ranked 11th in the world, reflecting her standing among the leading marathon runners internationally.

Methylprednisolone is a glucocorticoid classified under Class S9 of the World Anti-Doping Agency’s Prohibited List. It is prohibited in competition, and its detection prompted an investigation into the circumstances surrounding its use.

However, the case became considerably more serious when investigators examined Aga’s explanation for the substance’s presence in her sample. The Ethiopian athlete said she had taken the medication as part of treatment for a knee injury and submitted a prescription that she claimed had been issued by a medical clinic.

According to the AIU’s findings, the clinic named in the document did not exist. The individual identified as the prescribing doctor was a family member who was not registered to practise medicine. When questioned, the family member reportedly said they had used an old prescription pad from a former workplace.

That workplace subsequently confirmed that the individual had never worked there and that the prescription pad did not belong to the institution. The AIU, working with the Ethiopian Anti-Doping Authority, established that the medical document was forged.

The investigation also found that Aga had provided false information during an AIU interview on April 21, 2026, before submitting the disputed medical document on May 4. The findings resulted in a separate tampering charge in addition to the original anti-doping violation.

The AIU imposed a two-year suspension for the presence and use of a specified substance and a further four years for tampering with the investigation. The combined penalties resulted in a six-year ban, with Aga ineligible to compete until September 10, 2032, when she will be 38 years old.

The sanction marks a major setback for a runner whose career has included victories and podium finishes at some of the world's most prestigious road races.

Aga won the Tokyo Marathon in 2019, following a series of outstanding performances on the World Marathon Majors circuit. Between 2016 and 2019, she collected six podium finishes at the major marathons, including second-place finishes in Berlin in 2017 and 2018, second place in Tokyo in 2018, third place in Berlin in 2016 and third place in New York City in 2019.

She has not competed at a World Marathon Major since 2022, but continued to achieve success elsewhere on the international road-running circuit.

Between 2023 and 2026, Aga recorded five marathon victories across Dongying, Daegu, Xiamen and Hangzhou, including back-to-back wins at the Xiamen Marathon in 2025 and 2026. She also finished runner-up twice in Dubai and once in Sydney, maintaining a strong presence in elite marathon competition.

Her personal best of 2:18:09 further underlines the level at which she has competed throughout her career.

Despite those achievements, the six-year suspension places her future in the sport in serious doubt. If she returns when the ban expires in September 2032, Aga will be 38 and will have spent six years away from competition under the sanction.

The case also serves as a reminder that anti-doping proceedings extend beyond laboratory results. Athletes are expected to comply with anti-doping rules throughout an investigation, and attempts to mislead investigators or submit forged evidence can result in additional sanctions beyond those imposed for the original violation.

For Aga, the ruling brings a difficult chapter to a career that once saw her among the world's leading marathon runners, with her Tokyo victory and years of international success now overshadowed by one of the most consequential disciplinary cases of her career.

Rhonex Kipruto is the latest Kenyan athlete to be disgraced over doping as he has been handed a six-year suspension with his big achievements quashed.

Kenya's Rhonex Kipruto has been banned for six years over a doping offence, adding to the grim statistics for the country.

Athletics Integrity Unit (AIU) handed the punishment to the 24-year-old on Wednesday, meaning he will lose his 10 kilometres road race world record and a World Championships bronze medal.

Kipruto, who won the 10,000 metres bronze in the 2019 World Championships in Doha, had been provisionally suspended for an anti-doping violation in May last year and is now banned until May 2029.

Kipruto broke the 10km road race world record in 2020 in Valencia and won the 10,000 metres at the 2019 Stockholm Diamond League, achievements that are now null and void.

A Disciplinary Tribunal ruled that there were irregularities in Kipruto's Athlete Biological Passport (ABP), which shows discrepancies that can reveal the effects of doping.

"The Tribunal rejected Kipruto's defence, concluding the 'cause for the abnormalities in the ABP is more likely to be due to blood manipulation' such as through the use of recombinant human erythropoietin (rEPO)," AIU said its ruling, adding that there was no other plausible explanation for the abnormal values.

Kipruto had denied the Anti-Doping Rule Violation (ADRV) charge but the panel said it was "comfortably satisfied" that the Kenyan was involved in a "deliberate and sophisticated doping regime over a long period of time".

Kipruto can still appeal to the Court of Arbitration for Sport.

The disgraced long-distance athlete joins a long list of Kenyan runners who have been suspended over various doping offences.

His suspension comes just a day after the Anti-Doping Agency of Kenya suspended 33 sportsmen and women for failing doping tests.

Edna Kiplagat of Kenya has officially become a two-time Boston Marathon champion. The BAA elevated Kiplagat to 2021 Boston Marathon winner on Tuesday after the Athletics Integrity Unit (AIU) handed down a six-year suspension to former 2021 champion Diana Kipyokei. Kipyokei tested positive for triamcinolone acetonide (a corticosteroid)–a banned anti-inflammatory substance–post-race in Boston.

Kipyokei was also suspended for providing misleading information in her attempts to explain her use of the substance, including “fake documentation which she alleged came from a hospital,” according to the AIU. Kipyokei’s provisional suspension was announced Oct.14, but began on June 27 and her six-year ban has been backdated to June.

Kiplagat is now a two-time Boston Marathon champion, after winning the race in 2017 (she also ran to second in 2019). Kiplagat, 43, is widely regarded as one of the all-time greats in distance running.

Dubbed the “Queen of Persistence,” Kiplagat has competed at both the Olympic and World championship marathons, taking gold twice at the World champs in 2011 and 2013, and silver in 2017. Kiplagat has run all six of the Abbott World Marathon Majors.

The Colorado-based athlete won the Abbott World Marathon Series VIII (2013–14) and was named the Series V (10–2011) champion following the disqualification of Russian athlete Liliya Shobukhova. 

Kiplagat won both the London Marathon (2014) and New York Marathon (2010) with many second-place finishes. In 2021 she won the 7-mile (11.3 km) Falmouth Road Race, running away from the field in the second half of the race to break the tape in 36 minutes, 52 seconds.