When she's not studying the effects of climate change, Clare Gallagher has won many of the most prestigious ultrarunning races in the world. Neither prepared her for this five-day stage race through a land as grand as it is precarious.

Not all trail races are created equally: 22-year-old collegiate trail running champion Stuart Terrill learned the very hard way at the U.S. Mountain Running Championships last summer

Point your browser to these sales for amazing deals on running shoes, apparel, tech and accessories

Beyond exceptional customer service, Virginia’s PR Run & Walk is the heart and soul of the running community

We know meditation and visualization exercises benefit our mental health. Could they also support our physical bodies?

The 29-year-old non-binary bike mechanic from Boulder, Colorado, quietly threw down the second-fastest women’s time ever at the Javelina Jundred on a very "jot" day to earn their second golden ticket into the Western States 100

Forget your fuel? You might find what you need at your nearest gas station mini mart.

The original costumed 100-mile trail party—which also happens to be the final golden ticket race into the 2025 Western States 100—kicks off on October 26

Charles Costa, a multi-genre electronic British folk artist, has used ultra-distance trail running to revitalize his life and revive his career

Navigate your next running adventure with ease by implementing these tried-and-true travel tips

Grab your next pair of shoes for off-road running adventures at a huge discount

Put on the map by the likes of Courtney Dauwalter and mastermind Lazarus Lake, backyard ultras have no time cutoff and seemingly no end to their rise in popularity

How do you prepare for a record-breaking six-day run? If you're Matthieu Bonne, you clock a record-breaking continuous swim followed by a record-breaking seven-day bike.

FKT season has arrived, and no record is safe. Here’s a peek at five of the wildest record attempts we’ve seen go down this year.

The 39-year-old legend won the “très difficile” 100-miler by five hours to qualify for the 2025 Ultra-Trail du Mont-Blanc, setting the stage for the epic showdown we’ve all been waiting for

The three-time champion will compete for an automatic entry into the 2025 Ultra-Trail du Mont-Blanc at the Nice Côte d’Azur by UTMB 100-miler on October 4-5

Start the fall with a new pair of kicks at a discounted price during Prime Big Deal Day

Parks and trail towns along the southern reaches of the AT are devastated. Here's how hikers can help.

Minimal sleep, constant calories, and a relentless support crew helped “Candy Mama” shave 13 hours off of the fastest time ever recorded on the 2,190-mile route

The husband of runner Camille Herron admitted to having altered the Wikipedia biographies of prominent ultrarunners. The revelation came after a Canadian journalist launched an investigation.

Ultrarunner Tara “Candy Mama” Dower shaved 13 hours off Karel Sabbe’s previous record for hiking the iconic route

Some athletes swear by ice baths, infrared saunas and deep tissue massage. For this Catalan trail running and mountaineering icon, the secret to two decades of record-breaking performances is much simpler.

Running with your dog can be a great way for you both to get fitter and faster. Here’s how to get started.

Need new running shoes? A running watch? A wind shell? We’ve picked out the best deals for you!

Mountain runner Michelino Sunseri appeared to have climbed the iconic peak in record time, but the arbiters of speed determined it didn’t count

Backing up her Western States win this June, the American expat ran fearlessly to win her second Ultra Trail du Mont-Blanc on a very hot day

The Hoka-sponsored duo sealed their redemption tour in Chamonix. South Africa’s Toni McCann pulls out a commanding victory in her first 100K and second UTMB World Series Finals race win

After recovering quickly from the emergency surgery on July 5, Miller was hopeful to start the 100-mile race through Colorado's San Juan Mountains

The two-time reigning champ and course record holder returns for a bid to score a hat trick on this iconic 100-mile loop through Colorado’s San Juan mountains

After suffering a horrific ankle break and complicated surgery, the 2021 champ and ultra-trail legend returns to the iconic 100-mile event in Colorado’s San Juan Mountains to reconnect with community

Be prepared to get nothing else done as you obsessively follow the livestream and leaderboard

Summer ski resort mountain running races are legit hard, crazy fun, and accessible to anyone who wants to enjoy grinding in the grandeur

How I broke my obsession with the delicious little packets and fueled with real food instead

Plus, what’s the FDA’s involvement in energy gel approval?

This fruit-based energy gel, once touted for its high-carb intake and low volume, contains about a third of calories than advertised, multiple independent nutritional analyses suggest

The most decorated trail runner in history just won Zegama for the 11th time, proving once again that he is in a league of his own—as is this event

Next in line for the final auto-entry into the 2024 Western States 100-Mile Endurance Run on June 29 is Careth Arnold

One runner described the new section of the Barkley Marathons as “brambly” and “pitchy.” Welcome to the sport's most mythical race.

Our new weekly discussion program covers outdoor recreation and adventure

Harvey Lewis runs 450 miles in five days while six runners ran at least 100 ‘yards,’ more than 416 miles, at this year’s Big Dog’s Backyard Ultra

A regional Canadian race director cries foul after a new UTMB World Series event is launched in Whistler, sending North American trail running community into frenzy.

The UTMB World Series announced a new policy regarding adaptive athletes with the hopes of increasing participation. Many adaptive athletes say it doesn’t recognize the realities they face to create a path toward equity. 

Researchers say the iconic peak has lost nearly seven feet of elevation since 2021

A new documentary goes inside the record-breaking run with the speedy Belgian dentist

The American ultrarunner credits patience and reduced carbohydrate intake during the 153-mile Spartathlon as a key reason she was able to smash the course record

Swiss runner Rémi Bonnet leads a world-class field in this weekend’s Pikes Peak Ascent

Schide proves she can compete with the world’s best over every ultra distance. New mother Rachel Drake takes sixth, showing she’s back on the world stage.

The livestream coverage begins at 3 A.M. ET Friday

After an already packed year of racing and adventures, the French runner can’t wait for more

JP Giblin improved on his runner-up showing in 2022, while Jacquie Mannhard, a mother of two, won by nearly two hours

The four-time winner of the world’s biggest ultramarathon cited being unable to run due to a sacrum injury

More than 700 runners will toe the line for the 40th running of the Leadville 100 trail race

Although she’s only been racing on trails since 2021, Laukli has quickly become one of the world’s best mountain runners

Sierre-Zinal, the soul of fast-paced trail running, is celebrating five decades of world-class competition this weekend in Switzerland

Will Peterson overcame downpours, flooding, and his own hectic schedule to smash the unsupported FKT on America’s oldest thru-hike

Erin Ton dashed to the summit of 57 of the Colorado’s 14,000 peaks in a little more than two weeks, but skipping Culebra Peak has caused a firestorm of backlash

What started as a team self-supported effort with Liz Derstine, ended as a supported FKT

David Hedges sets new FKT (Fastest Known Time) on the Nolan's 14 route in Colorado.

After a very snowy winter, race officials and volunteers put in huge efforts to make sure the course was safe enough to be run this year

The quest for a sub-four day Long Trail continues, but Kelly sets the supported FKT in some of the rainiest conditions imaginable

Running volume is important, but how you structure your training might matter more

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

Four unconventional ways to manage chafing on your next run—and effective alternatives

Tom Evans wins the overall title in a historic day of running

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

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

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

The ultra runner and endurance skier is open to whatever the mountain gives her—she wants to experience a new adventure and inspire other women to do the same

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

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?

We traveled to Los Angeles to Strava’s exclusive event of panels and announcements. Here were some of the essential things we learned about where the tech giant is headed. 

Get ready: 90 hours of live-streaming Cocodona is coming. See who’s competing, and what to expect at this year’s Cocodona 250.

Injury can be disappointing and frustrating, but it can also show us a new way forward

UTMB is updating its entry system for runners who give birth. Here’s what you need to know.

We’re teaming up with the world’s biggest race organization to give you a front-row seat to the biggest names and races in trail running. Here’s what you need to know.

With over 60 on-the-ground events and virtual watch parties, one of the sport’s most vibrant film festivals is hitting the road to offer new screenings in the U.S. and internationally

What do runners need to know about this condition? 

Lake Sonoma is celebrating its Sweet 16 with Team USA Selection and a deep field of competition. Here’s what to know about this legendary 50.