performance-enhancing drugs

This latest allegation is part of what could be a larger problem in the trail running world.

The IAAF has announced that 2017 World Long Distance Mountain Running Champion Petro Mamu used banned substances in competition.

Check out Trail Runner magazine's author page.

Joe Gray, Sage Canaday and others support more aggressive drug-testing programs for trail and ultramarathon races.

Gonzalo Calisto, the fifth-place finisher at UTMB 2015, has been disqualified after a positive test for a banned substance.