It is believed to be the first death in the 19-year history of the Ultra-Trail du Mont-Blanc races in and around Chamonix.

Jim Walmsley is gunning for the UTMB win

UTMB week is underway in the heart of the French Alps, but things are changing for the iconic race festival.

Gatorade Endurance is trying to uncover why more athletes from marginalized groups aren't participating in endurance sports.

Most workouts should be sustainable and repeatable. But some workouts should empty the fitness tank entirely. That’s where these eight workouts come in.

Should you take TP on the run? Is it okay to walk? What is a "normal" distance to run? Your trail running questions, answered.

Check out Trail Runner magazine's author page.

Racing UTMB, following it in person or on online, or crewing a friend? Here’s the play-by-play of the course… and how to run it!

Father Time is undefeated. But with smart training, we can give him a run for his money.

Get expert tips and advice on nutrition, training, mindfulness and mental skills to take your running to the next level.

Our guide to the Race Across The Sky

Your long-run pace depends on your running goals, what systems you're trying to improve, current fitness, and what you mean by long.

Strength training can be intimidating if you don't know where to start, but once you get into it you'll find it's so empowering.

A July 2021 study found that hormone levels throughout the menstrual cycle can affect heart-rate variability and resting heart rate. What does that mean for training?

Two-time champion returns fit and strong but expecting to run more conservatively

In 2015, while crewing for her husband, Scott’s, successful Appalachian Trail speed record, Jenny Jurek began healing from the grief of two traumatic miscarriages. In 2021, she returned to the trail with their two young children in tow.

Not every run needs to be a serious workout. Here's what you need to know about chilling out and slowing down.

Olympian Alan Culpepper explains that any runner can train like the best in the world. It’s the mentality and approach that matters—not world-record speed.

Battle race day woes with performance psychology.

Injury forces ultra legend Scott Jurek off the trail.

Eat (and drink) these items to up your carbohydrate intake and reap their endurance performance benefits.

Montgomery isn’t afraid to try new things, especially when it comes to training for 106 brutal miles through the Alps.

Check out Brian Metzler's author page.

Masters-aged runners need to pay more attention to heat acclimation. Here's why.

Your watch is only as smart as its user. Here's how to be strategic about your gadget's feedback and metrics.

A little bout of fatigue can develop into training overreach, which can blossom into overtraining syndrome. Here's how to know the difference.

Learn the difference between flexibility and mobility, and focus on the latter.

We put tough, dirty miles on these new customizable trail shoes that are generating buzz for their price tag — and find they deliver, with premium comfort and performance.

Stock your pantry with these essential goods for trail runners.

In a new series, we’ll be following along as Jacky prepares to take on her biggest challenge yet: running 240 miles across the desert and mountains around Moab.

The paradox of effort: Is trying too hard holding you back from reaching your goals?

One Indigenous runner didn't see her community reflected in running media, so she set out to build her own community based on representation and an intersectional awareness of barriers many runners of color still face.

The Rocky Mountain Slam, a series of five races through the Rockies, is the quirkiest and toughest race series in ultrarunning.

Rehabbing an ankle sprain is critical for reducing the risk of future ankle sprains and the development of chronic ankle instability. Here's a 5-stage rehab program with 10 exercises.

With three international additions and nothing below 100k - this change is sure to shake up the startline at the U.S.'s most competitive 100 miler.

Watch David Roche break down training tips and tricks for leveling up in your next ultramarathon.

Athletes responding to their mental health isn't weakness. It's awareness.

Adding tempo running before or after intervals can contribute to major fitness gains during training builds.

The world's most widely used drug boasts some powerful beneficial for runners.

Pro runner Max King offers tips, tricks, and helpful perspective for falling on trail runs.

Ask the coach: are saunas beneficial for runners, or do they do more harm than good?

Looking to take your nutrition to the next level? Get the low-down on all things fueling from our resident sports nutritionist.

How one woman is using an epic stage race to make running more inclusive.

A new study out of the University of Montana finds that carbohydrates from just about anywhere do a good job of muscle glycogen recovery, as long as the numbers add up.

Today’s trail shoes provide specialized features for a variety of different terrains. Here’s how to sort out what you need.

Gear choices take on greater significance when you're going to be running all day—but there are still only a few necessities.

Yes, nutrition advice is often confusing, ambiguous, and hotly debated. But despite all the noise out there, these nuggets are indisputable—and often transformative.

The July 2021 study found that level, uphill, and downhill running economy are correlated except at the steepest grades. What does it mean for training?

Healthy eating has two components: healthy food and a healthy relationship with food. You need both to thrive.

Does alcohol have a place in a sport promoting health and wellness?

You can stay mobile no matter where you are with this mobility plan.

An Indigenous runner reflects on her relationship to land, language and running.

A training plan for beginner trail runners.

It’s bad enough sweating it out in scorching heat. Then comes stomach pain or irritated bowels.

Foot pain slowing you down? Follow this advice to keep your feet healthy and pain-free.

What is plyometric training and how can it benefit you?

Check out Trail Runner magazine's author page.

How Mario Mendoza is training to conquer the alps at the UTMB 100-mile trail run this August.

While the literature on alcohol and athletic performance is somewhat mixed, it’s worth tracking how you respond to even small amounts due to the risk of impaired recovery.

Strength and running coach Nell Rojas shares her favorite go-to strength workout.

Advanced training methods proven effective by scientists, coaches, and athletes.

Starting in 2022, The Hardrock 100 Endurance Run will update its lottery to get more women to the startline of the iconic mountain race.

Through a new study, researchers are trying to understand bone health in female ultrarunners.

How the trail running legend continues to inspire others after years in the sport.

For Meghan Hicks, running her third Hardrock 100-miler isn’t just about returning to competition for the first time in a year and a half — it’s about reuniting with the trail running community.

Check out Lisa Jhung's author page.

Dinée Dorame is the one-woman host, creator, and producer of the Grounded Podcast, on the intersection of running, culture, land and community. Through all of her work, Dorame builds upon a legacy: the values that her family and community have passed down to her.

Unless you're very intentionally paying attention to these elements, you're probably learning bad habits that are contributing to weak glutes.

It's one of the most important questions to consider before you start any type of regular training.

Developing proper form can feel complex and overwhelming. This cue focused on the angle of the shin and femur has helped some athletes that struggle with practicing the best form.

What science says about running in the heat, and when hot is too hot to run.

Everything trail running women need to know to feel confident on the trails.

The hardest 100-miler in the U.S. returns for the first time since 2018

Check out Lisa Chapello's author page.

Cut weight and save money for more backcountry enjoyment.

This total-body strength workout is ideal for trail runners of all levels. Start with one round and work your way up to two to three sets.

How science is bridging the gap between physical and mental health.

We took the Salomon Ultra glide for a test run. Well, several test runs.

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.

The principles of this 8-week intermediate/advanced plan can improve speed and endurance even if you don’t plan to road race.