Ruth Chepngetich, the marathon world record-holder, tested positive for the banned diuretic HCTZ in a urine sample collected on March 14, 2025. After an internal investigation, Chepngetich voluntarily accepted a provisional suspension on April 19 while the Athletics Integrity Unit continued its case.

Ruth Chepngetich, who set the women's world record at the Chicago marathon in 2024, has been provisionally suspended for a positive doping test.

Women’s marathon world record-holder Ruth Chepngetich has been provisionally suspended after testing positive for a banned substance, the Athletics Integrity Unit (AIU) announced on Thursday.