When you’re in your fourth decade, you’re still young enough to run a personal best. But it’s also the beginning of the end.

You might not like his style, but Sir Mo gives his sport some much-needed attitude

Pico started running and climbing mountains ten years ago, after losing her foot to cancer

Data from the last world championships suggests you shouldn’t be concerned about your foot strike, no matter how you land

It’s tastier than gels are... and that’s the main selling point

A blind runner finished a half marathon for the first time using only guidance from a dog thanks in large part to the Ruffwear Unifly—the biggest development in guide-dog harnesses since they were invented nine decades ago

Roger Robinson’s 'When Running Made History' sets a new standard for books about the sport

Running coach David Roche shares his training tips

After vanquishing all his human competition, the world’s best marathoner will again take on the clock

Last year, Dykes set the marathon record for his age group—only to find that it didn't count. But he's not giving up.

The media needs to get better at “personalizing” the best runners on the planet

Throw “tapering” out of your vocabulary and peak for your next marathon by carefully tweaking volume and intensity.

New research suggests that a month of probiotic supplementation reduces GI symptoms in runners

Why the top American in Monday’s Boston Marathon is all about training transparency

After a string of injuries, Jordan Hasay and Dathan Ritzenhein are itching to race again

No external flourish can match the thrill of pushing your body to its limit

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

Yes, the physiology and biomechanics of treadmill running are a little different. But how you feel about it is probably more important.

What kind of sadist creates the hardest race in the world? We sent our writer to find out.

Tune in to the highly anticipated race on April 15

When my wife tried to kill me, when I went to jail for battery, and when I finally tried to take my own life, there was one thing that kept me from unraveling

In an excerpted chapter from his new memoir, '26 Marathons,' the road racing legend recalls the first time he ran America’s most famous race

At the 2019 Los Angeles Marathon, Adam Gorlitsky will set out to become the first American paraplegic to walk 26.2 miles—and bust his British rival's 36-hour time in the process. But his real dream is to bring assisted mobility to people with disabilities.

A new statistical approach brings sophisticated probability analysis to the future of marathoning

The new running standards are ridiculously complex. Here's what that means.

The oldest woman to swim the English Channel wants to continue knocking off marathon swims into her 80s

Downhill running takes a toll on the body, but you can train your body to better handle the load—and snag that PR.

Want to see more people on bikes? Get over yourself and the rest will follow.

Scheduling two races close together can create rewarding new challenges but requires strategic training and a flexible, positive attitude.

New world record for 10 marathons in 10 days? Check! Here's how Wardian is consistently one of the most prolific and successful ultrarunners of all time.

In advance of her marathon debut, we spoke to Sisson about racing, recovery, and what it’s like to have Molly Huddle as a training partner

A detailed analysis of historical Boston results wades into the long-running debate on sex differences in endurance

In the age of specialization, it’s refreshing to see a big name get outside his comfort zone

More fat shoes, farewell to Flanagan, and the continued dominance of Kipchoge

Keep it simple. Consistency is key. Get out of your own way.

Plotting top-100 marathon times for the past decade shows that Eliud Kipchoge’s world record is a huge outlier. The question is why.

From big-wall climbers to surf champions, these are the most dedicated, successful athletes of the year

From New York to Phoenix—and from 5 kilometers to 500 miles

When you run a race you haven’t registered for, you’re taking the easy way out

A friendly reminder that a 2:10 marathon is actually still pretty hard

The world’s biggest marathon is more than just a race. It offers the illusion of unity.

Tune in to the highly anticipated race on November 4

At Big’s Backyard, you never know how long the race is going to last, because there is no finish line

‘3100: Run and Become’ explores moving meditation all over the world, from a race around a single New York City block to a 1,000-day run for Japanese monks

After 18 years of putting on the marathon show, race director Peter Ciaccia is ready to move on

A tweak to the CMAH gene could be key to humans' running superiority

What if striving to be great is what's holding you back?

Your next event can tell us a lot about the warming planet

Athletes break down their nutrition rituals.

Sunday’s race will be a treat for running fans

She won Olympic gold in a sport that chose her. Can she do the same in the one she truly loves?

The man who raised the possibility of the feat back in 1991 takes another look into the crystal ball

A stunning world record of 2:01:39 resets our understanding of what it means to run 26.2 miles.

He’ll win anyway, but we should also hope that Eliud "Boss Man" Kipchoge runs a world record

Sue Johnston has been setting FKTs for decades and inspired a generation of ultrarunners along the way. If you've never heard her name before, that's by design.

These organizations want to help you tick that big once-in-a-lifetime trip off your list

Many of the people disqualified last week cut the course for the commemorative medal

After becoming the first American woman to win the New York Marathon in 40 years, Flanagan is coming back to defend her title

With two years until the Tokyo Olympics, organizers are preparing for what could be a brutally warm race

Using machine learning to recognize who’s a serious competitive runner and who’s not could teach us something useful about avoiding injuries

Eating for endurance can be tricky, but it doesn't have to be

An in-depth biomechanical analysis of nearly everyone at the world track championships yields unexpected results

Elite runners often compete in shoe prototypes. Should the practice be banned?

Don't fall in the trap of more is better

This small country has consistently produced some of the world's best marathoners.

These are sturdy enough to take on any adventure and comfortable enough to wear every day—but they won't cost you an arm and a leg

We asked ex-Olympian, coach, and elite Masters runner John Henwood for his advice

We asked eight athletes what socks they'll be wearing for the Western States Endurance Run

It's never too late to race the 26.2. You just have to know how to prepare.

The 33-year-old started running as a way to cope with depression. Then she launched Harlem Run. Now she wields the sport as a tool to help the whole country.

New research compares men’s and women’s pacing patterns, and finds some telling differences

If we truly want more women in this sport, it's time to change the system for entering races

He's the best American runner in a generation. Too bad nobody likes him.