What on Earth Happened to Tough Mudder?
Bankruptcy, injury and apathy: how a 2010s fitness darling was knocked off course
How to Go Sledding as an Adult, According to a Skateboarder
Ian Graham on how to fall, what to wear and the great boombox question
Dispatches From the Wildest Marathon You’ve Never Heard Of
What it's like to run 26.2 with Nick Bare on a private ranch outside Austin
The Best Part About This Surfing Vacation: No Experience Required
You don’t even need to know how to pop up before booking a trip to Kalon Surf on Costa Rica’s Pacific coastline
A Beginner’s Guide to Skiing the Backcountry
Adventure skiing is still alive and well...if you're willing to work a little
The Fat Tire Bike Is a Year-Round Cardio Champ
It's low-impact, Arnold-approved and capable on sand or snow
Meet the First Woman to Scale the Seven Second Summits
Jenn Drummond talks K2, raising kids and the car crash that changed her life
Inside the Wild World of Utah’s Finest Avalanche-Fighters
Remembering the generational "powder panic" that hit Alta and Snowbird last season, from a skier who was interlodged in April
Inside the Navy SEALs’ Mythical “Monster Mash” Marathon
Former SEAL Jonathan Wilson breaks down the grueling training exercise, and the 211-mile Veterans Day challenge it inspired
Why Folding Bikes Aren’t Just for City Living
Believe it or not, the tiny two-wheelers belong in your adventure routine
This Is America’s Best Road for Downhill Skating
Maryhill is a historic 25-curve track in the Pacific Northwest, with a fascinating backstory
The 19-Year-Old Gamer Who Became a Professional Race Car Driver
Jann Mardenborough talks about his improbable rise, and "Gran Turismo," the Neill Blomkamp movie that captures it
The One Runner You Should Be Following on Strava Right Now
Russ Cook, aka @hardestgeezer, is currently attempting to run the entire length of Africa
How Nick Bare Pioneered the “Hybrid Athlete” Revolution
The bodybuilding ultramarathoner talks military days, supplements and what's next
The Ultimate Endurance Race Calendar: 12 Months, 12 Events
From running the Arctic to rowing the Atlantic, it doesn't get more diabolical than this.