The news desk
Can a Clean Woman Really Run 2:09 in the Marathon? We Did the Math.
LetsRun crunches the numbers: if the clean women's marathon world record goes under 2:10, the gap to the men's world record shrinks from the consistent 10%–11% across standard distance events to 8.8%. The piece opens with Ruth Chepngetich's mark, which Amby Burfoot said had to be doping, and asks whether male pacers and supershoes can explain the discrepancy.
This site provides a summary. Read the source original for the full article.