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New data shows that the biggest difference between elite and middling runners is how much time they spend jogging

Being well-equipped with the right layers and gear for a backcountry tour is critical for safety and comfort—do it right with these field-tested essentials

Keeping your muscles cool will supercharge the benefits of aerobic training, new findings suggest

By triggering a diving reflex, athletes who perform breath-holds can increase red blood cells—and, possibly, endurance

Shaun White has been the face of snowboarding for two decades. So what’s he doing in retirement?

Thirteen adventurers, athletes, and renegades who pushed boundaries, toppled barriers, and shook up the outdoors

Marley Blonsky is changing the cycling industry—one group ride at a time

A veterinarian by day and ultrarunner by night, Paris became the first woman to complete the notoriously hard race this year

The Eritrean cyclist was the first Black rider to win a stage at the Tour de France. He hopes he opened the door for more African riders to follow.

The Nepali climber who summited Mount Everest three times in two weeks has always gone her own way

A selection of (mostly) new titles for fans of science, endurance, fitness, and adventure

After years of rumors, new data suggests that real-time lactate sensors are finally ready to hit the market. But will athletes know what to do with them?

Your calf muscles are most likely a little weak and really tight. Here are our favorite stretches and exercises to take care of them.

More evidence emerges that muscle-fiber type matters—if you can figure out which type you have

Scientists recently examined the physiology of the increasingly popular open-ended race format—running 4.167 miles every hour—pioneered by Gary Cantrell.

We lose power more quickly than strength as we get older. Researchers are trying to understand why—and how to fight back.

Throughout her athletic career, Caroline Gleich has been moonlighting as an activist. This year, she stepped into politics full-time.

Critics say the first sub-2:10 marathon was impossible—and fueled by doping. Our columnist examines the science as he tries to make sense of the backlash.

Leading researcher Daniel Moore weighs in on myths, truths, and misconceptions about how much protein athletes need

Research on athletes who are experienced meditators finds better “response inhibition” and superior endurance

In a new documentary, the pioneering professional snowboarder opens up about motherhood and her career in the shadow of a cancer diagnosis

Researchers were once convinced that some people have a bigger training response than others—but the data says otherwise

Sports nutritionists love to recommend high protein intake. Kidney specialists aren’t sure that’s a good idea.

Speaking publicly about depression or anxiety can be healing for athletes, but not everyone wants to become a spokesperson for mental health

A Swedish company’s baking soda formula was the hottest supplement at the Olympics. And now a new study finds that it really works.

Researchers in New Zealand used athlete data to pick up patterns in how we recover. Their insights are surprising.

If you feel like your athletic performance is falling short, this new research might explain why

The American recently set a new world record in sport climbing’s fastest Olympic event. We’ve come up with a list of easy everyday tasks that require more time to accomplish.

Five questions with American Olympic climber Brooke Raboutou about the new format in Paris, her physical and mental preparation, and why climbing accelerates personal growth

Think Olympic medals bring you fame and fortune? Think again. For many Olympians competing in Paris, simply staying financially afloat requires constant struggle.

Hiltz, who identifies as nonbinary transgender, has set the American record in the mile, won five U.S. titles, and earned a spot on Team USA at the Paris Olympics

Five questions with the defending Olympic champion about her impending retirement, her gold medal dreams, and riding the break at Teahupo’o

Riley Amos earned his way to the top riding with past Olympians in Durango, a small mountain town in southwestern Colorado that has produced more top cyclists than just about any other U.S. city

Out of the thousands of Olympians competing in the Paris this year, these are the ones we’re the most stoked to watch put on a show

Military scientists have developed an equation for how many calories it takes to haul weight in different ways

Some of the most hardcore athletes in the world are elite race walkers. Moving faster than most people can run, their sport pushes the limits of endurance, pain tolerance, and fueling.

After suffering a mental health crisis during a mountaineering expedition, National Geographic photographer Cory Richards walked away from his climbing career. After a terrible rafting accident, �����ԹϺ��� writer Katie Arnold nearly ended her marriage. This summer, they are both telling their stories.

A new study suggests men and women should address age-related declines in aerobic capacity quite differently

A selection of (mostly) new titles for fans of science, endurance, fitness, and adventure

“Predictive processing” offers novel ways to think about sports psychology, the limits of endurance, and the urge to explore.

Caroline Gleich is a renowned climber and skier, a climate activist, and now the Utah democratic party’s candidate for US senate

A relaxed, charming kid from Durango may make Americans fall in love with the Tour de France again

What does a professional kayaker do when he realizes he’s in the twilight of his career? He releases a rap album, of course.

In episode two of Ultimate Mountain Athlete, presented by the 2024 Toyota Tacoma, athletes race up to the 12,859-foot summit of Red Mountain 3—twice

U.S. District Judge John A. Mendez cited Barrett’s pattern of terrorizing his victims and a clear lack of remorse as reasons for issuing the maximum penalty

Wunderkind Jakob Ingebrigsten may have lost (again) on Saturday at the Prefontaine Classic, but don’t expect his unorthodox training approach to disappear

When Eberhard Jurgalski determined that Reinhold Messner narrowly missed a key summit, he told the world. He’s still dealing with the fallout.

It’s not a joke: This genre-defining trio are part of the speaker series at the �����ԹϺ��� Festival in Denver, June 1-2, along with Quannah ChasingHorse, Jeremy Jones, Dr. Rae Wynn-Grant, and many others

Hard training and good genetics give elite runners an edge, but the four-minute barrier may have its own magic

One editor’s thoughts on the Asian American illusion of belonging. Plus, how this spearfisher, freediver, shark whisperer, and entrepreneur lives her most badass life, and more from the �����ԹϺ��� archives.

Scientists are finding that the subjective perception of time during exercise is more complex than expected.

Five questions with Haley Batten, who is slated to lead America’s strongest contingent of Olympic cross-country mountain bikers in years

Having a high VO2 max is great, but research is showing that the key to elite performance is maximizing something called fatigue resistance

Cycling has always been touted as easy on the knees. But actually preventing arthritis? That’s a new one.

A new study blows up the conventional wisdom about maximum protein doses for athletes.

The fitter you get, the more likely you are to feel that you can’t get enough oxygen during hard exercise

Contrary to what scientists once thought, even superficial cooling is enough to interfere with muscle oxygen supply.

Not as soundly as you’d expect, actually

‘Tough Broad’ is a guide to keeping your foot on the gas as you reach your golden years

Lusti has built a career—and a life—on toughness and a preternatural ability to ski through puckering technical terrain. Her greatest challenge may be learning to let herself be soft.

In her new book, ‘Mind Game,’ Julie Kliegman offers a wide-ranging look at the inner struggles of sports stars and also-rans

Marijuana is still a banned substance for athletes, but new research is chipping away at the idea that it makes you faster

The trial will be followed by a sentencing hearing, scheduled for May 21. Barrett faces a maximum penalty of life in prison.

Federal prosecutors allege that Charles Barrett—a prominent member of the Northern California climbing community who goes to trial for aggravated sexual abuse next week—is a serial offender with a shocking history of violence, harassment, and intimidation. An exclusive investigation into his life and alleged actions raises troubling questions about the dangers women continue to face in the outdoors.

Two weeks in Austin with Moriah Wilson’s family

New research explores the minimum effective dose of resistance training and the health effects of overdoing it

Adults will take recreational cues from their children, “unprocessed” will become a marketing asset, and rodents will show us the way to eternal life. 

It turns out you can absorb more carbohydrates than sports nutritionists thought. But does it actually make you faster?

Growing numbers of NCAA athletes are inking NIL deals. For some companies, it’s a marketing “lightbulb moment.”

The middle Florence brother is leading a cohort of social-media-savvy surfers who have created a totally new way to go pro—no competition circuit required

For this group of women, swimming miles in freezing cold water is the best way to spend a weekend

In 2023, records fell, kids took government leaders to task, and activists fought bravely for the planet. These individuals are the �����ԹϺ���rs of the Year, chosen for their bravery, tenacity, and strength.

His grandfather founded the Iditarod, but he’s the first member of his family to take the title

Soccer player Quinn, cyclist Austin Killips, and runner Nikki Hiltz inspired us—and thousands of other fans—this year

Neuschäfer won the Golden Globe, a dangerous, solo, nonstop sailing race this spring

Martinus Evans, who goes by @300poundsandrunning on Instagram, didn’t feel at home in the running community. Now, he's on the cover of magazines, has published a book, and is still running—at his own pace.