These joints are essential for all of your outdoor activities. These movements will keep them functional and healthy.

After finishing Western States, the 62-year old ultrarunning legend has her sights set on Badwater and Hardrock

Frequent injuries—and the pain that comes with them—can actually improve with time on the trails.

When you consistently stress the body and the mind, you change your chemical makeup

His meticulous, data-focused preparation and race-day approach served him well

A science-led look at how heat acclimation, hydration, and cooling strategies can help you improve your performance when the temperature rises.

This year, 62 runners finished in the final hour before the cutoff.

Some doctors are now prescribing physical activity for mental health. Here's why.

Here are the factors to consider when adapting your race-day nutrition strategy.

After a 6th place finish as top American in 2022, Yingling talks balance, stress, and wanting to put herself in the mix at this year’s Western States Endurance Run.

We tested the Garmin Fenix 7X Sapphire Solar and Suunto 9 Peak Pro for months to determine which is the best.

After dropping out due to injuries in two previous years, Montgomery is really, really, really ready to tack a crack at the legendary 100-mile race.

Physical fatigue, muscle soreness, and age greatly impact post-race recovery and sleep patterns.

Many endurance athletes become so regimented that they forget to listen to their bodies. Here’s how you can get back in touch with your body.

Local authors and trail runners Bob Crowley, Hal Hall, and Tim Twietmeyer wrote a book to highlight and document the history connected to the race course.

This ultrarunner is partnering with Rising Hearts and GU Energy Labs to bring her self belief to ultrarunning’s biggest stage: the Western States Endurance Run.

This 75-year-old Philadelpiha runner hopes to become race’s oldest finisher.

Guiding athletes, teaching life lessons, and sharing running thoughts with a metronome of consistency.

Our annual Western States 100 statistics celebration is here! Prepare yourself for data that might add some fun context to the 2023 viewing experience.

After 50 years, America’s most cherished ultra-distance race might have the deepest field ever

Seasoned pros and fast newcomers shine in short-and-fast sub-ultra races

Are ketones the key to newfound speed? Not so fast, say experts. Here’s what to know about the fueling approach some athletes say has helped them level up.

In an excerpt from her forthcoming book, ‘Up to Speed: The Groundbreaking Science of Women Athletes,’ longtime Outside contributor Christine Yu argues that female athletes deserve their own benchmarks for athletic success.

The former Navy SEAL faced deep snow, gusting winds, and sheer ice on North America’s highest peak. But he still smashed the previous records set by Karl Egloff and Killian Jornet.

After recovering from a broken foot, she’s back ready to chase another top-10 finish.

Women are vastly underrepresented in scientific research. This wearable company wants to change that.

The future of coaching and how trail running presents a unique challenge for artificial intelligence.

Led by Murphy’s gold and bronze medals, Team USA notched 10 top-10 finishes at World Mountain and Trail Running Championships.

One writer on why she might innately crave adventure.

The six-race weekend is steeped in trail running culture and community

Farvard is one of 17 athletes selected for The North Face’s Athlete Development Program. His mountain objectives, including this month’s Western States 100, have never been more ambitious.

For the second time in eight months, the Vermont-based runner took seventh at the World Mountain and Trail Running Championships long trail race, locking down another Team USA podium finish.

Snow will likely impact finishing times at both races. Here's the latest update on conditions in the Sierras.

First there was altitude training. Then it was heat training. Now it’s… pollution training?

Racing in last year's Western States 100 Mile Endurance Run changed my life and made me fall even deeper in love with running.

Joe Gray finishes fifth in the men’s race; Kenya wins both team titles

Here are five ways to celebrate Global Running Day, even if you never knew it existed

What are the impacts of your shoe quiver, and how can they be reduced?

How to address common foot ailments and injuries in trail running

Some athletes are turning to the prescription drug to regulate their weight - here’s why experts say that’s dangerous.

Here are the most important things to know before catching a flight for your next trail running adventure

Whether you’re experiencing a menstrual cycle or need to go number one or two, here are the current sustainability guidelines and etiquette for ‘business’ on the trail.

We tapped a gaggle of testers—from a search and rescue pro to an aspiring tennis star—to sort the top sport watches for any activity

After a five year hiatus, thru-hiking legend Heather “Anish” Anderson just set another FKT, the 250-mile section of the Appalachian Trail that runs through Pennsylvania. In this essay, she explores how her relationship with the sport has evolved over the past decade since her ground-breaking Pacific Crest Trail record in 2013.

2021 Outsider of the Year Steph Catudal’s new memoir, ‘Everything All at Once,’ offers a raw look inside the paradoxical landscape of grief and surrender, love and loss of her father, and nearly her husband, endurance athlete Tommy Rivs

Loaded American team heading to June 7-10 World Mountain and Trail Running Championships

Here’s how to maximize the benefits of that “hurts so good” feeling

The sportswear brand is backing scientific studies to understand women’s sports performance

The legendary trail runner and mountaineer was trying to climb the world’s highest mountain from the West Ridge

Race director Megan DeHaan partners ultrarunning and agriculture to celebrate and protect open space

Disregarding smart nutrition strategies is a surefire way to not reach the finish line. Here are the most effective ways to sabotage your next big race.

Hello Grindstone! With an East Coast race on the docket for 2024's Golden Ticket races, and CCC replacing UTMB, how will this change reshape the startline at the U.S’s most competitive 100-miler?

Outdoor time with your partner is more than just fun—it can be the key to a superstrong bond.

As multiuse trails get more crowded, we can all do our part to avoid conflict.

Doug Mayer tells interesting stories behind the rise and growth of UTMB

The good news: If we can harness the power of the peak-end rule, we can actually enhance our training.

Plus, how you can test the range of motion of this often-forgotten joint

This 10-minute strength routine combines elements of lifting and mobility to make the hamstrings, glutes, and quads ready for the hardest runs.

Jennifer Licther, Mike Foote set out to creating visual and emotional connections to fight climate change, and photograph every remaining glacier in Glacier National Park.

Welcome to the world of the Cowgill Trail Collective

Social media influencers have started a trend of posting videos of them running long distances without training. Here’s why the science says it’s probably not a great idea.   

A list of basic and completely necessary items that every trail runner needs for taking on their next endurance challenge.

The New York-based upstart apparel company’s community ethos isn’t just for show

In-race data collected during the world championships sheds new light on how top endurance athletes avoid overheating

We asked experts what to consider before you hit the pavement

Runners with chronic illness inhabit two faraway worlds–one characterized by fitness, and one characterized by debilitating symptoms and daily uncertainty

Plyometrics can make you a more efficient runner, and it turns out they don’t need to be complicated or risky

It’s completely normal

In her new series for Women's Running, seasoned non-runner Dimity McDowell invites you to meet the heartfelt challenge to stop running.

Christine Yu makes an argument for a sports system finally designed with women in mind in her new book Up to Speed. 

Bulking up? Only lifting heavy? Avoiding soreness? How is your strength routine (0r lack thereof) holding your trail running back.

Whatever terrain you encounter the Salomon Ultra Glide 2 can handle with its cushioned, stable, and nimble ride

Trail Alsace Grand Est by UTMB includes four races that end in Obernai

Despite the proliferation of destination marathons, some runners are making a conscientious decision to stay closer to home. But they wouldn’t judge you.

Erratic, joy-filled exercise could make you a fitter—and happier—athlete.

We put the brand’s fit tool—and the shoes’ runabilty—to the test

Whip up this sticky, easy, carb-filled plate after a tough endurance workout

All ski jackets and pants will eventually be available in three fit choices: fitted, regular, and relaxed, and skiers can choose them based on fit and style preference

Your HRV can be a helpful indicator for several trends in your training. It can also predict an oncoming decrease in mental wellness. Here’s what we know.

The more time you spend outdoors, the more nutritious your food choices may be