Looking to improve your sleep, HRV, and recovery? We put two wearables to the test to see which will have you bouncing back faster.

A new study has interesting strategic implications for reducing muscle damage during and after exercise.

Canyon Woodward channels his love of rural spaces into political activism, fueled by his adventures in trail running.

Strong performances from American athletes netted the national team several podium positions.

Joe Gray finishes 6th as U.S. men place fourth

A misadventure on a mountain bike taught me that running wasn’t the thing that mattered most: It was just the vehicle I used to get there.

Joe Gray, Allie McLaughlin headline strong U.S. at world championships in Thailand

After announcing that this year's Ironman World Championship race was her last, the fan favorite wasted no time making her mark on the ultrarunning scene, placing fifth at the Javelina Jundred 100-mile trail race last weekend.

Leon Sparks, 44, was trying to summit three mountains in one trek when he tumbled down Colorado’s El Diente Peak

Take advantage of the best time of year for exploring by bringing a tool that won’t add any weight to your pack: meet Gaia GPS, a powerful navigation mobile app and website that empowers you to create your own adventures and stay on the trail. Master the app with Outside Learn’s new course.

In the fifth installment of The Backyard Stories, we travel to Missoula, Montana, to meet up with professional ultrarunner Mike Foote and discuss land stewardship, food sharing, and his beloved Crown of the Continent.

Our expert nutritionists answer your most-searched nutrition questions.

The process is as easy as making a smoothie

A pair of experiments find that mice choose to run less after taking antibiotics, even though their endurance is unchanged

Your guide to voting on national, state, and local levels this November

Inov-8’s nitrogen-infused foam offers springy responsiveness in their newest trail shoe, one of our favorites this year.

Last weekend’s hyper-competitive race in Arizona’s Sonoran desert drew top talent, record-breaking paces, and confusion around nonbinary award categories.

From podcasts to trail shoes, performance hoodies to popping playlists, here’s what our editors enjoyed in October.

Whether you’re in need of a quick snack or an on-the-go meal, you deserve a bar that's both fulfilling and tasty

In the wild world of endurance sports, recovery can feel like the last frontier

In the fourth installment of The Backyard Stories, we travel to Southern California, to visit trail athlete and fruit-grower Nick Brown at his family’s farm, in an ecosystem where increasing wildfire is a reality.

Don’t let an upset stomach ruin a good workout

Looking for an easy to execute Halloween costume? We've got you covered.

While society’s understandings of addiction have progressed from the days when sufferers were dismissed as weak-willed hedonists, food addiction is a nascent concept—one laden with controversy.

No, flat abs are not a true indicator of how strong you are.

Six pieces of equipment for running around a 14,000-foot mountain

Arizona’s favorite hundred-miler is a Golden Ticket race, and it’s attracting a monster field. Here’s what you need to know.

Have some fun with your fall running with this speed play session.

After a three-year absence due to COVID-19 and a devastating volcanic eruption on the island last fall, the Transvulcania by UTMB ultra race returned with American Abby Hall taking the win.

A lifelong hiker and runner, Julie jumped into ultrarunning two years ago. Shining Rock marks her first unsupported FKT.

Thanks to advances in everything from noise cancellation to battery life, they’re my go-to for long runs, long meetings, and long flights

Where you run—not just how much—can make a big difference to your run form and fitness.

In the third installment of The Backyard Stories, we travel to Telluride, Colorado, to talk with mountain athlete, Dani Reyes - Acosta about connecting food, outdoor adventure, and water.

Instead of searching for the elusive fountain of youth, try celebrating your maturity.

TrailForks is an app and website that lets you know what you are getting yourself into on the trail

The death of Hilaree Nelson highlights a double standard that still exists with mothers in the adventure world

The upstart brand with the wide, comfy toe box, balanced ride, and loyal following had its start in a toaster oven

Two ultrarunners face off to capture the fastest known time on the Arizona Trail, hoping to push one another to a new record.

The best way to find your next pair of running shoes is to shop locally

In the second installment of The Backyard Stories, we travel to California’s Central Valley to talk with Kimo Laughlin about this family’s small orchard, sinking aquifers, and how to live a life of agriculture and adventure.

Step aside, sports gels. These foods have been fueling endurance athletes for centuries.

This weekend, on October 15th, watch 37 national teams compete to win the race with no finish line.

Every fall, the prevalence of hunting where I live in Vermont forces me to shift from running trails to dirt roads. I’ve learned to love the change of pace – and to stay safe.

Moderate alcohol consumption can bring joy to people who are able to enjoy it responsibly. And what’s the point of trail running – or anything else – if we aren’t experiencing joy?

For World Mental Health Day, this short film follows one runner’s journey of accomplishments and setbacks in feeling comfortable in his own body.

A last-minute change of plans left one Colorado elite athlete seeking a partner for the grueling 8-day TransAlpine Run. She found her on a mountain. Wearing heels.

This trail running bird lover shares a unique perspective on autumnal raptor migration.

On October 10th, Trail Runner and Rising Hearts are celebrating Indigenous excellence in running with a panel of leading Indigenous athletes, scientists, and artists.

New data outlines how much they run, how long it takes to resume training after giving birth, and how well they return to competition

For carrying weight while moving quickly in the mountains, the Slope Runner Exploration 18L is our new favorite vest-pack hybrid

The two adventurers that fell in love with each other, then the legendary line linking 14 of Colorado’s highest peaks.

Here's how to keep your running clothes lasting longer and out of the landfills.

This blood marker is a warning sign that your body may be dangerously low in iron.

In this week’s Performance Corner, learn an effective way to think about why hard workout and heavy weight training sessions matter in making you a faster, stronger runner.

Team USA will be sending a strong team to the first combined championships in Thailand

We’re asking thirty-one elite runners and visionaries thirty-one rapid fire questions. What makes them tick? Up next, Faith Briggs.

Mood swings? Fatigue? Hungry all the time? Here’s how to know if you need to switch things up with your food decisions.

This quick workout will help build strength and a range of motion in your ankles, knees, hips, spine, and shoulders

Coach Vanessa Foerster offers five steps to regulate your emotions

Alpacka Raft’s featherweight Ghost is changing the game for multisport adventures.

Though COVID isn’t going anywhere soon, the newer variants may have fewer long-term effects for something all athletes care deeply about: our hearts.

Learning to adapt training and mindset through Alaskan winters

Our running goes through seasons. Embracing general fitness over peak performance takes an attitude adjustment.

Episode Three brings two of the greatest mountain athletes of all-time together for the very first time. Despite their different activities, Kilian and Tommy find connection in their passion for the mountains.

With record-shattering descents and a deep love for the mountain, Colorado-based Mascarenas overcame unhealthy habits and injury to become the Queen of Pikes Peak.

Working towards better balance might actually be what is keeping you from finding passion in life and potential in running. Instead of seeking balance, practice integrating who you already are with what matters most to you.

Trails don’t maintain themselves. Here’s what trail work is and why you should consider volunteering, even if it isn’t required.

Elite ultrarunner Tim Tollefson created a local event that invites everyone to enjoy running mountain trails through races, panel discussions, and films.

Women tend to play down their accomplishments. Here’s why ultrarunner Sally McRae wants that to change.

The supplement Athletic Greens/AG1 seems to be everywhere in the endurance market these days. Registered Dietitian Matthew Kadey takes a look at "greens powders" for athletes and whether they deliver on their mighty claims.

Eating for activity is not as complicated as you think.

One month before toeing the line at this weekend’s Run Rabbit Run 100, a backcountry skier finds inspiration and mentorship to push the pace across one of Colorado’s toughest running routes.

Andrea Sansone spent the summer scouting Nolan’s 14 before setting the FKT over Labor Day weekend

Team USA hauled in a lot of medals at World Snowshoe Championships in Argentina

With the help of a supporting community, Courtney Dauwalter continues to push the envelope while playing in the mountains.

With the biggest purse in ultrarunning and a new team challenge, this Colorado race attracts some of the fastest in the world.

Three days: That's how long it took endurance athlete Jeff Garmire to finish the John Muir Trail. But from health scares to falling asleep while hiking, it was anything but a casual stroll.

But what does it take to keep this mysterious connector primed for sport?

Ultrarunning, why? The Diversity of Motivations and Experiences in Ultrarunners

A perfect partnership and years of mountain travel made an improbable traverse possible