Welcome to The North Face Endurance Challenge Series' Clean Sport resource hub. As the organizer of North America’s largest trail race series, The North Face wants to set a high bar for hard work, an appreciation for the outdoors and, ultimately, clean sport. Here you can find The North Face Endurance Challenge Series Clean Sport Policy and Code of Conduct, something that must be signed by all participants at Endurance Challenge Series events. The North Face is dedicaded to encouraging conversation, spreading awareness and being a source for the latest information about Clean Sport and effects of Performance Enhancing Drugs within trail running and ultrarunning. Check back to explore our increasing library of educational material, articles and related links.

This portal is moderated by an independent, external source. All information presented below is for educational and reference purposes only and does not necessarily represent the views of The North Face.


“Dirt, the original proving ground.”

With competition comes the desire to win, often at any cost. Drugs and cheating within the world of sport is nothing new. And, as trail running grows, racers go pro, more events offer prize purses and races become more challenging to enter, so too does the need to address clean sport.

The North Face Endurance Challenge Series supports the policies and rulings of the International Association of Athletics Federations (IAAF), the World Anti-Doping Agency (WADA), the U.S. Anti-Doping Agency (USADA) and any national sports federation. But, to emphasize the importance of clean sport, The North Face ECS takes repercussions a step further.

Convicted athletes are banned from all The North Face events while serving their ban. Once their ban is complete, convicted athletes may participate in The North Face events, but they will not be eligible to receive prize money, awards or podium recognition. In addition, they may not participate in the ECS GORE-TEX 50-mile event in the elite field.

In addition to sponsoring the race series, The North Face sponsors many of the world’s best trail and ultrarunners. This firm stance against the use of PEDs honors our athletes, the trail running community at large and the spirit of competition.

Clean sport is the best kind of sport.

An excerpt from a study authored and published by Project Know - an organization dedicated to informing the public on addictions, drug abuse, and treatment options.

Our innate competitive drive  – at play on levels both biological and societal – can reach cutthroat levels in the world of sports. Athletes often seek every available opportunity to gain a competitive edge. With so much pressure placed on winning, shortcuts like performance-enhancing drugs begin to look appealing, despite their potentially fatal consequences.

Performance-enhancing drugs are thought to gives athletes an edge in competition, but do so with adverse health effects in the long-run. Many of these substances cause cardiovascular conditions, organ damage, tumors, and endocrine effects, all of which do more harm to the athlete than good. We broke down the effects of substances such as anabolic agents, peptide hormones, beta-2 antagonists, diuretics, stimulants, and narcotics on the body to explore how performance-enhancing drugs may actually impede performance.

Click here to explore Project Know's step-by-step look at PEDs affects on the brain, hair & skin, heart, kidneys, liver, lungs, and reproductive organs.