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A video taken by “Ultramarathon Man” minutes after surviving an alleged coyote attack gets criticized for being fake news. We reached out to Dean for answers.

Crystal Toolie traveled from Nome, Alaska, to compete in one of the world’s most iconic 100-mile races.

With a deep men's field at ultrarunning's biggest event, can Jim Walmsley become the first American man to claim the title at UTMB?

Zachary Friedley has a lot of goals for his trail running career. One is making the sport more accessible to adaptive athletes.

Are you making one of these training mistakes? From volume to motivation, here’s where trail runners get tripped up. 

American men have historically struggled on the UTMB podium. David Laney is the highest placing American, making his fourth trip to Chamonix. 

A wonderful 2022 study has novel insight into the training of 3 top finishers at the Giro d’Italia, one of the biggest cycling stage races of the year. The case studies show that what we expect athletes to do in theory and what they actually do in practice can diverge. And that leads to some fascinating lessons about training theory.

With entry changes on the horizon, this year’s UTMB might be the most competitive ever. Here’s why. 

This year's Life Time Leadville Trail 100 Run presented by La Sportiva is turning out to be one of the fastest fields ever. Here’s what you need to know about this historic race.

Everything you need to know about the UTMB race series in Chamonix.

Here’s why the latest style deserves a spot on your running shoe roster.

We do a deep dive analysis on training with HRV to help you get the most from this all-important metric.

One of the world’s most decorated ultrarunners is starting Ultra Spirit, an event that centers community, exploration, and...berry picking? 

High mileage? Giving 110%? Skipping speedwork? Elite athletes weigh in on the worst trail running advice out there. 

Plus, seven pieces of gear we can't wait to get on the trails and test out.

Where did the brand known for its huge, cushy soles come from—and how did they get on the feet of Britney Spears?

Garmin’s ultra endurance line of smartwatches gets a touch screen, onboard mapping, and a (very) bright LED flashlight—but is it all worth $1,100?

Joe McConaughy sets a new Fastest Known Time on the 223-mile John Muir Trail.

A marooned writer discovers herself while running the trails of Vashon Island, Washington.

With the first-ever Golden Ticket race in Asia, there are more opportunities than ever for international runners to gain entry. How will this change reshape the startline at the U.S’s most competitive 100-miler?

Long runs are one of the most critical parts of ultramarathon training. Here are the best shoes for making them feel like a breeze.

Training theory: output at VO2 max while climbing may have a high predictive value for athlete progression and regression over time, particularly with age. Constant reinforcement of this metric may improve performance at all effort levels, including long ultras, and can seem to reverse the athletic decline process in some cases.

A new study suggests that potato protein could be just as effective as dairy proteins to kick-start the recovery process—but there’s a catch.

Elite athlete and 2022 Canyons 100K winner Jazmine Lowther is taking her passion for mountains and a career in environmental science to compete at CCC this month. 

Running an ultra is an extreme challenge, but being a support person for someone who’s running an ultra is a whole different can of worms.

The team at Patitucci Photo has become synonymous with incredible wilderness imagery. This new film illuminates the story behind that beauty.

From coffee that supports conservation to new featherweight trail shoes to The Bear (yes, Chef!), here’s what our editors have been obsessing over in July.

Human rights lawyer and ultrarunner Stephanie Case organizes an all-women expedition in Afghanistan with Free to Run. Here is their unforgettable story.

More and more people are measuring heart-rate variability using fitness trackers—and seeing their HRV numbers plummet after a few drinks the night before. Here's why.

Hawley is lucky that his awkward run didn’t end in injury.

We asked our readers: what’s the best piece of trail gear you’ve ever used? Here’s what our audience said.

Studies show that reducing body temperature may improve performance even in relatively temperate conditions. We’ve known that physiology for a long time, but it wasn’t until recently that athletes started making cooling techniques a top priority. All around the world, in all different sports, there is something big happening. We are witnessing a cooling revolution. 

The Colorado 100-mile race became so popular it needed a lottery system. Its 50-50 gender split is one of the first of its kind. 

Curious what's trending? Here were the five most popular Trail Runner articles published last month.

How (Not) to Run Up Baja Sur’s Highest Peak

Attempting an FKT around one of the oldest lakes in North America. With a brain injury. 

Blurring the boundaries between urban and wild

Ever feel like you’re the only runner who’s always injured? You’re not alone.

Summer is here. Expert tips on how to fuel your next long adventure run. 

The bell’s ringing. Time for a new adventure.

Want to build confidence and agility on technical terrain? Here are the drills and exercises pros recommend. 

It's no secret that athletes need to develop their mental game, but a growing number of athletes are now seeking out expert mental training.

Massage guns can be great for relieving muscle tension, as long as they're used in the correct areas.

Time off from running doesn’t have to mean changing your identity. Stay connected with the community to redefine what it means. 

How repeated failure, patience, and reverence led this runner to complete one of Colorado’s most demanding mountain challenges. 

Our editors tested five of the best carbon-plated trail shoes – and two alternative plated shoes – on the market. Here’s what we found.

The waste that comes from athletic gear and apparel is a structural problem, but individual actions still matter.

How the trails we run shape our experience of place.

The Tour de France is the world’s best field experiment for endurance performance. What did we learn in 2022?

Stuck in a training rut? We asked elite athletes and professional coaches what changes they’ve made to level up. 

Here’s what the science says about making it to the top as quickly and efficiently as possible.

Taylor Nowlin, Emily Hawgood, and Ruth Croft brought unique stories the 2022 Western States, and this video follows them all.

Experiencing the highs and lows of Ecuador’s trail running scene. 

You don’t need a recovery shake after every run, but reaching for one after key workouts and longer efforts can help speed recovery. 

After a 35-minute ferry ride from downtown Seattle, you’ll find an island that boasts great trail running, if you know where to look. 

Chances are you’re not giving your tendons the proper attention they deserve. Here’s what science tells us about tendon health.

Rancher and Native lands advocate Eli Neztsosie shares his approach to running through the world’s hottest place with reverence.

Here’s what you need to know and who to watch for during this weekend’s festival of trail running at Speedgoat.

After finding herself in Montana, Jennifer Lichter discovered a love and affinity for trail running. Now she’s competing among the best.

A new study reviewed the literature on how underfueling and overreaching may be intertwined in some cases, but not in all. The findings have big implications for how we talk about the nuanced world of training load and fueling in endurance sports.

The dietitian and marathoner knows that when runners integrate their culture into their nutrition, they are more satisfied with their training.

New course records and an incredibly close men’s podium mark a historic year for the Hardrock Hundred Endurance Run.

Watch Jason Thienel attempt to complete the No Business 100—which ascends 14,500 vertical feet in Tennessee and Kentucky—twice in one push.

Hardrock 100: Kilian Jornet is back in Silverton, Colorado, to compete in what many consider the world’s hardest 100-mile trail running race.

Dr. Kim Schwabenbauer breaks down a new study on the turbo-charging properties of caffeine for race day performance.

Eighteen years ago, I was one of the best runners in the country, then a mysterious fatigue took that away.

In The Performance Corner, our expert strength running coach Jason Fitzgerald explains that training regimens for road racing have been honed to a science, and trail runners can learn a lot from them about improving performance.

Maggie Guterl has earned a reputation as one of the toughest athletes in trail running. This weekend, she'll take on one of the toughest 100-mile races.

Nick and Jamil Coury are teaming up to run the “graduate-level” 100-mile course around Colorado’s San Juan Mountains.

We’re asking thirty-one elite runners and visionaries thirty-one rapid fire questions. What makes them tick? Up next, Hardrock athlete Dakota Jones.

A recent webinar gathered some of the world’s top running researchers to talk about downhill running. Let’s review four incredibly cool takeaways!

Sometimes, the beer discussion begins on the trail. But how does your favorite fermented brew actually stack up as a recovery beverage?

Science-backed strategies to help you learn to accept racing discomfort and choose how you react to it.

With support from Black Diamond, Perry Cohen created an all-transgender trail running club. This video chronicles the story.

We’ve rounded up the best in sun protection apparel, accessories, and skincare products to keep you cool and protected this summer.

We all love a good sparkling water after a hot run. But are your favorite bubbly beverages hurting your bones?

Curious what's trending? Here were the five most popular Trail Runner articles published last month.