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.

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.