Some athletes are turning to the prescription drug to regulate their weight - here’s why experts say that’s dangerous.

Here are the most important things to know before catching a flight for your next trail running adventure

Whether you’re experiencing a menstrual cycle or need to go number one or two, here are the current sustainability guidelines and etiquette for ‘business’ on the trail.

Turn that vacay into a trail-running foray with these popular destination races

We tapped a gaggle of testers—from a search and rescue pro to an aspiring tennis star—to sort the top sport watches for any activity

After a five year hiatus, thru-hiking legend Heather “Anish” Anderson just set another FKT, the 250-mile section of the Appalachian Trail that runs through Pennsylvania. In this essay, she explores how her relationship with the sport has evolved over the past decade since her ground-breaking Pacific Crest Trail record in 2013.

2021 Outsider of the Year Steph Catudal’s new memoir, ‘Everything All at Once,’ offers a raw look inside the paradoxical landscape of grief and surrender, love and loss of her father, and nearly her husband, endurance athlete Tommy Rivs

Here’s a look at the gear, tech, media, and general miscellany our Outside Run editors loved last month

Here’s how to maximize the benefits of that “hurts so good” feeling

The ultra runner and endurance skier is open to whatever the mountain gives her—she wants to experience a new adventure and inspire other women to do the same