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Here's how trail runners can outsmart the dog days of summer and stay safe during a heat wave.

Here’s your complete how-to for planning (and enjoying) a run in the mountains.

What to bring on adventurous mountain runs.

What to wear on adventurous mountain runs.

Not all trail runs are up mountains, or ultra-distance. Here’s how to find the easy trails that can deliver less-intense runs.

Busy parents can still trail run during a summer of COVID-19—here's how.

These two forms of outdoor recreation were made for each other. Here's how (and why) to combine them.

These picks will be your go-tos for those sunny summer trails.

How the predominantly white trail running community is evolving, thanks to some BIPOC trailblazers.

Find the trail runners that work best off-trail and in mixed conditions

Get off-trail just a couple hours' drive from Denver and the Front Range

Kiplin Pastor had been training eight months for a rim-to-rim-to-rim​ run of the Grand Canyon​​​​​​, but COVID-19 stripped away that chance

I went out for a hike and forgot to put on you-know-what. When we crossed paths, was it really necessary to hit me with your self-righteous wrath?

When the Olympian accused her former team of skirting anti-doping rules, she became an outcast. But she kept talking.

Grip and support on any dirt, at any distance

Jessica Rogers and her team make some of our favorite trail-running gear

Our team of six testers covered over 1,000 miles to determine the best hydration packs

2 More reasons why every runner should hit the trails regularly, now more than ever.

New research sheds light on the variables that determine when a trail or mountain runner should switch from running to walking uphill.

Here’s how to be the best environmental steward possible when running during a global pandemic and after.

It's a ways down the list, obviously, compared to people doing actual lifesaving stuff

'This Land' profiles runner Faith Briggs as she traverses 150 miles through three national monuments

The outlandish-looking trail model is designed to enhance stability. Here's how it stacks up.

'Portraits of a Runner' shows how three dedicated athletes are preparing for the Olympic Trials

'Uinta-Wasatch-Cache' highlights the beauty and recreation that the Uinta-Wasatch-Cache National Forest in northeast Utah has to offer

I was an irresponsible person who was good at getting in trouble. I asked Dave for help, and he made a bet on me: his car. In order for him to keep his car, I had to change.

Harold Bennally wanted to run the Boston Marathon in moccasins. So he planned a fundraiser on the Navajo Nation to get there.

It's not easy to make a living as a professional mountain runner, but the globe-trotting Coloradan is doing it on his own terms. We sent our writer on a weeklong bus trip with Gates (and a bunch of sweaty strangers) to find out more.

An ideal shoe for high-altitude adventure runs

Things didn’t go as planned for the reigning Western States champ at The North Face Endurance Challenge, but she fought through it. (And drank a lot of Coke.)

For clean water when you're on the run

Don’t let winter cold banish you to the treadmill

Don’t let winter cold banish you to the treadmill

After switching from marathons to ultras six years ago, Boulet continues to blow away the competition

Five days in, with hundreds of miles more to go, Jameson and Danielle confront their biggest challenges yet while facing down doubt, pain, and the wilderness of Oregon.

An already excellent shoe gets an upgrade

Follow in the footsteps of the first week as two friends set out to set the Fastest Known Time for the Oregon Pacific Crest Trail, despite weather, bugs, late nights and hundreds of miles to go.

An epic story about a quest, friendship, choices, exhaustion, empowerment, persistence and possibility.

The Emerald City is surrounded by mountains and has access to the ocean, but some of its biggest outdoor draws can be reached by public transportation

Everyone can find a pair that fits perfectly, whether you prefer compression, roomy cuts, full coverage, or a barely there fit

Pack these essentials to keep up your workout routine—no matter where you go

By offering minimal prize money, the sport’s most prestigious race might be excluding the best runners

For his 50th birthday, photographer Jeff Johnson wanted to run 50 kilometers and climb 50 pitches in Yosemite

This weekend, the world’s best mountain runner sets his sights on Pikes Peak

A trail running adventure over three Colorado mountains becomes a pilgrimage of redemption, elation, struggle, grit and pure delight.

'Leadman: The Dave Mackey Story' chronicles its namesake character making a return to the iconic Leadville 100 ultramarathon

This Swiss mountain “race for nobody” should be on every runner’s bucket list for its beauty, challenge and community spirit.

What's so upsetting about letting a woman be faster than you?

This short video features runner Guillaume Peretti on the GR20 trail in Corsica, France, where he once held the fastest known time

Colombia boasts huge mountain ranges, large portions of the Amazon, and endless coastline and surf breaks. But can a country come back from a civil war to become a mecca for adventure?

The online store will award $500 to three finalists between the ages of 13 and 23—a total of 12 over the next year

After spending days in the Arctic wilderness, running 100 miles on trail is a piece of cake

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

Walmsley just bested his own time by an impressive 20 minutes

That speck, high on the ridgeline, is pastor Sverri Steinholm, who serves as a preacher to the people of his parish and its hospital

The elite marathoner wants you to know that trail runners deserve our respect

We sat through the 20-minute molding process, then took them out on dirt to see how they performed

Always wanting more pockets? Try Rabbit’s Dirt Pounders shorts, which have seven of them for anything else you need to carry.

From plantar fasciitis to blisters, these are the top causes of foot pain for runners

Marc Peruzzi’s recent column about trail work clearly touched a nerve in the running community. Part of his argument is fair criticism, but he got some important things wrong. 

We're no strangers to the suffering that happens during Tennessee's annual Barkley Marathons, but this puts it in perspective

They're exploding in numbers and having a massive impact on our favorite trails, yet the short-shorts crowd almost never pitches in when it comes to trail work

Heavy has gone the way of the dinosaur

New tweaks mean they're easier to use at work and on the trail

Running coach David Roche shares his training tips

Poet Helen Mort knows that a walk on the trail is the key to creative influence in her writing

The Nathan VaporHowe 12L vest is simple and lightweight, and features a 1.8-liter hydration bladder that doesn't slosh around on your back

Our top picks for all conditions, from dry or slushy roads to technical or muddy singletrack

'Hood to Trail,' from Yak Media and Stance, features three urban running crews as they figure out what it takes to be a trail runner

The Consumer Product Safety Commission tried to recall strollers it claimed were defective, but the newly appointed chair stopped it

These babies keep you warm, block wind, and shout from the depths of your closet, “Let’s go already!”

Epic ultras in the Alps. An urban loop in running's most beloved city. High desert treks through the American Southwest. These are without a doubt the best runs on the planet.

Watch Travis Kauffman describe the incident in his own words

I drew them. You liked them.

The two-year-old brand makes some of the most comfortable, best-fitting running kit we've tried

When a trail says "Dogs on Leash," it's time we respect that—and speak up to people who don't

Gina Lucrezi was an all-star track athlete through high school and college, once winning a national championship for indoor track.