Arctic Cowboys aim to become first to paddle the Northwest Passage

Eleven bags that keep you gear clean, dry and organized at the starting line, trailhead or gym.

Get to know Rajesh "RJ" Majar, a kid from Kathmandu with mountain bike aspirations as lofty as the Himalayas.

The serial entrepreneur, former rapper and creator of new endurance retreat 29029 describes the moment—at Mile 96 of a 100-miler—when his entire perspective on life, human potential and hardship changed.

Riders to watch, team travails and course-design gimmicks—this year's Tour de France is shaping up to be an interesting one. My half-dozen predictions for how it'll all go down.

When it comes to these beastly events, suffering is a given. Crossing the finish line requires some serious grit and fitness, and more than a little luck. While accessible to anyone who wants to push themselves to their limits and beyond, you don’t want to sign up on a whim. These events demand a lot of planning, expertly structured training and respect. That said, there’s nothing like conquering a monumental challenge that seems impossible, crazy even. It’s an experience that leaves you changed, and likely hungry for more. So, which one will you tackle first?