When ultracyclist Bob Breedlove fatally collided with a pickup truck during the 2005 Race Across America, law-enforcement officials in Trinidad, Colorado, called it a tragic accident and nothing more. But friends and family have been investigating his death ever since, and they're making some disturbing allegations.

Outside talks to actor Nikolaj Coster-Waldau’s about his docuseries ‘An Optimist's Guide to the Planet,’ what keeps him hopeful in 2025, and his love for getting outside—even if it’s just a bike ride in New Jersey

These versatile trainers can handle everything from speed work to recovery jogs, on road, track, and trail

With a new book on the history of wind, Simon Winchester opens up about fear, aging, and the adventures that shaped him

Tested and approved outerwear to keep you comfortable in all cold-weather conditions

As a practicing Pagan, I'll welcome in fall with a moonlit hike. Here's where to go to view the Corn Moon on September 7, tips for navigating the trails at night, and how to add a little magic to your trek.

The right marathon shoe can boost your performance and make the race more enjoyable

What to read (or buy) for fans of science, endurance, fitness, and adventure

Probably due to poor self-control

Turns out, the best way to conquer a lingering childhood fear is facing it head-on—with just a tiny headlamp, sturdy trekking poles, and showtunes humming in your head.