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Research suggests that we might be missing out on powerful mental health benefits by choosing to train indoors versus natural outdoor environments.

A new study looks at why side stitches happen in runners - and it has nothing to do with your fitness level or what you ate before your workout.

Instability puts strain on your Achilles tendon. Train your body to support your stride from the feet up using these exercises for Achilles injury prevention.

New research finds that, all else being equal, runners don’t have more gastrointestinal problems than cyclists

This tiny, indie brand is known for making lightweight, simple, affordable and very reliable shoes

Here's what to remember when running outside in the cold.

As the weather shifts, we reached out to editors and elite runners to locate the highest performing cold weather running tights on the market.

Golden Ticket winner Riley Brady and Coach David Roche on nonbinary athlete inclusion in trail and ultra running.

From new precision surgery techniques to biologic options, a bum knee no longer needs to put you on the bench. Here's what endurance athletes need to know about knee replacement surgery.

Two Indigenous ultrarunners share simple recipes for whole-food endurance.

A great running stride isn’t learned by focusing on your footstrike or cadence - it develops as you improve your body’s strength and mobility.

Arriving into an aid station can be a whirlwind of cheers and volunteers. In our new Ask Alex Anything column, elite mountain athlete and nutritionist Alex Borsuk Hasenohr dissects 12 of the most common aid station items, to offer a cheat sheet of their nutritional value.

When "good enough" starts to slow you down.

You know it as a bone booster, but there are plenty of other reasons to make sure you are getting enough calcium. Here’s your primer on the essential nutrient.

Browse the selection of our favorite running gear this winter season, all ready to wrap for your best runner friends - or yourself!

Welcome to our top selection of gifts for runners that are set to keep on giving all year long.

If popping the cash for a monthlong trip to the Maldives isn't an option, here's the next best thing - the best recovery gifts for the runner in your life.

Bring a smile to the face of your favorite trail runner this year with a pair of our favorite trail running shoes from 2022.

Socks, hydration packs, insoles, and coffee! Welcome to the cornucopia of accessories and essentials for the runner on your list.

For the gearhead in your life, here are our editor's top picks for the runner who is technologically inclined.

In 2009, Born to Run sent shockwaves through the running world. Thirteen years later, Born to Run 2 offers a practical guide to running, eating, racing, and training like the world's best. Here's an excerpt from the book, out December 6, 2022.

We found the best kicks for connecting with the earth and setting your feet free

From November 24-27, Rising Hearts—an Indigenous-led grassroots organization—will host the third annual Truthsgiving 4 Miler. The run was created to honor Indigenous history, foster allyship, and share the true history of Thanksgiving during Native American Heritage Month.

This time of year can see increased stress around food-related anxiety. These expert nutritionists have tips on how to effectively navigate unsettling holiday dinner table diet talk.

Once vilified, foods containing high dietary fat are now being promoted as an important part of our daily diet

Join Run Intel to have your GPS watch generate ultra-specific email updates based on your running activities and goals

Alysia Montaño is dedicating her career to building and sharing resources for moms on race day, and beyond.

Adam Peterman’s last year of racing has been mind-blowing, with wins at the JFK 50 Miler, Chuckanut 50K, Canyons 100K, Western States 100, and the World Championships. What type of training leads to an athlete with such stellar speed and endurance? Here's how Adam Peterman took the trail running world by storm.

Looking to train for a multi-day stage race event? Here's everything you need to know to get ready for your first, or your fifth stage race.

Deep in the throes of the post-race blues, one writer found herself craving a creative craft.

Stage races are growing in popularity around the world. Here’s a comprehensive primer to prepare for your first (or fifth) stage race. It might be the most fun you’ll ever have.

Chin up. You don’t have to dread the months ahead. Running through the darker months can have a different vibe and tempo, and that's okay.

I tested apparel from fifteen brands in all kinds of conditions. Here are my eight favorite pieces for autumn trail runs.

Check out Kristen Seymour's author page.

Should you stretch before you run? What’s the best kind of running shoes? How often should you run? Your top questions, answered.

Replacing lost salt is a pillar of sports nutrition, but new research suggests more isn’t always better

Hip flexors creaky and tight? We’ve got the antidote: yoga poses that stretch hip muscles and provide relief.

Coros’ “middle child” gets some key updates on battery life, onboard features, and screen size, but can it hang with other smartwatches in the super-crowded $400-500 category?

On November 14th, a coalition of non-binary athletes published an open letter to the trail and ultra-running community to take steps in greater inclusivity.

This weekend, 1,200 runners – including two Olympians – embark on a 50-mile race in Maryland. Here’s what you need to know.

Approximately half of athletes who menstruate are using a hormonal contraceptive. How does using hormonal birth control affect athletic performance? We asked the experts to break down what we know - and don't know - about hormonal contraceptives for endurance athletes.

Top athletes—from Nordic skier Jessie Diggins to mountain runner Joseph Gray—share a meal-by-meal plan of what they eat on typical winter days.

If you're looking for a low-impact option that still delivers on intensity, a StairMaster workout is the way to go.

How well you can see your surroundings matters, but subtle gait changes also burn more energy.

Do you experience a brief spell of dizziness, nausea, headache, or blurred vision at the start of a workout or race? Rebound hypoglycemia may be the culprit.

Long-term fitness growth relies on aerobic development, and focused base periods are an opportunity to lay the groundwork for breakthroughs. This 12-week plan builds training volume while developing top-end speed. Breakthroughs await.

Enjoy mixing up the terrain and the intensity with this off-season session.

Give the gift of adventure this holiday season with one of five curated running experiences. 

If you’ve experienced burning pain in the forefoot that radiates into the toes, you may have what’s called Morton’s neuroma.

Learning to cue a tall, balanced run posture, combined with strategic, specific core training, is the path to improving your run form, alleviate pain, bolster training durability, and find seconds on the clock.

These top running poles will make your trail adventures safer, easier, and more enjoyable

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

Elite running coaches weigh in on what it means to be talented and how they predict who will run fastest

New data shows that, unlike a car, you can’t perform well with a half-full fuel tank

Turn your trail runs into movie magic with the Skydio 2+ autonomous drone

Before you grab a colorful, flavorful sports drink to sip after your next workout, read this

Wellness trends often rely on catchy jargon, complex methods for optimizing health and fitness, and unsustainable practices. Our health columnist believes that simpler is usually better when it comes to developing a routine.

In the latest Performance Corner, expert strength running coach Jason Fitzgerald explains how positive self-talk can be ripe opportunities for cultivating a sustainable running practice. 

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

The mechanical and neuromuscular adaptations for breakthroughs can be difficult to stimulate in a smart, intensity-controlled training plan. Sometimes, being “smart” is overrated. That’s where the Power Hour comes in.

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

Here’s how to identify and respect your body’s limits as you work to improve your hip mobility

As The Backyard Stories series concludes, athlete and farmer Jonnah Perkins connects with Protect Our Winters Executive Director Molina, then runs 12 miles to cast her vote. 

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

After breaking the master’s course record at the legendary desert race, Yanko won a Golden Ticket that will send her to the Western States Endurance Run. 

A good cry can be therapeutic and can even better connect you with others. Let’s stop shaming it.

The sneaker industry has a role to play in climate change. New Balance is trying to reduce its climate impact with a holistic program.

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.

How this world champion plans to push through the pain (and where he expects the field to explode)

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.