Sierre Zinal women’s champion busted for doping

Despite a positive test in May 2022, Esther Chesang still competed and won Sierre Zinal in August due to a failure of communication by the Anti-Doping Agency of Kenya

2021 Boston Marathon champion Diana Kipyokei suspended for doping violations

Kipyokei and fellow Kenyan Betty Wilson Lempus both tested positive for triamcinolone acetonide and were found to have interfered with the investigations into their cases

Sierre-Zinal champion receives three-year doping ban

Mark Kangogo of Kenya has had his Sierre-Zinal title revoked after testing positive for two prohibited substances