Micro-dosing: how athletes are outsmarting anti-doping tests

For WADA and the AIU, catching cheaters is only becoming more difficult

Boston Marathoner DNFs, then grabs finisher’s medal

The accusation comes in a year when a shortage left some finishers without a medal

Former world record holder disqualified for taking a car during 50-mile race

Former 48-hour world record holder Joasia Zakrzewski is facing scrutiny for hitching a ride at a recent 50-miler in the U.K.