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Nail the basic form, then ramp it up with these five creative variations for better, stronger results

To see major improvement in a matter of weeks, you'll need to learn how to sprint

We reached out to a few experts to see who they rely on via Twitter for trusted endurance tips

What's old is new again. These eight straightforward principles will help you perform your best, no newfangled hacks required.

Where triathletes can find the best online guidance

Yes, it's possible to find helpful training advice online—if you know where to look

Tailor your training to the race you're going to run

You're dreading workouts, easy days aren't easy, and other signs that you're spending too much time on the trails

The line between being undertrained and perfectly fit is thin. Here's how to ensure that you don't end up on the wrong side.

Streamline your endurance-training data for less stress and better results

Three explosive drills for better race-day performance

Despite the chronic doping scandals, the sport still has a lot to teach us about fitness

Preparing your body for the descent can give you an edge over the competition on hilly courses. Here's how to do it.

Beau Kittredge is fittest athlete you’ve never heard of. Here’s what a day in his life looks like.

Cory Richards and Adrian Ballinger summited the highest mountain in the world last month—Ballinger without supplemental oxygen. Here's how they trained their minds and bodies to accomplish one of mountaineering's most difficult feats.

The hive mind weighs in on what to buy

Nail this move to create a solid base for your endurance feats

This summer in Bermuda, the Australian-born sailor will lead Oracle Team USA’s bid to retain the oldest trophy in international sports. The 37-year-old’s secret to staying on top? Stepping away from the boat.

There's nothing quite like breaking up the workday with a run, but logistics can make it tough to pull off. Here's how to execute flawlessly.

Take your gym sessions seriously.

Hack your indoor training to help you set new PRs in the wild

The good news? They're all pretty simple to reverse—or prevent entirely.

Pair your regular workouts with this outdoor-friendly routine for superior strength, stability, and endurance

During my time in South Carolina, Paris Mountain loomed large—until I finally ran up it

From pasta makers to candy bars, these eight items have totally transformed how we get after it

After more than 40 years as an athlete and coach, it pains me to see people latch onto fitness fads, and I want to clear a few things up

We asked the experts how to diagnose, treat, and prevent running's most frustrating, most common injury

For those who prefer to get their workouts in on either end of the 9-to-5

More exercise, surprising meals, backcountry escapes, chilling out, and spicy yoga

This big next step is thrilling—and perilous. Proceed with caution.

With winter quickly approaching, we’re getting pretty excited for ski season here at �����ԹϺ���. We caught up with pro skier and trainer Crystal Wright to learn some ski-specific workouts to get in shape for the slopes.

American churches are building first-class gyms to get followers in shape and attract new members to the flock. Critics see lucrative businesses masked as ministries, but the programs are a spirited defense against our obesity epidemic.

Crib from Krar’s experience to get the most out of your summer runs.

Your weekly 20-mile long run might be sabotaging your marathon training. Here's why less could be best for you.

A new detergent called DeFUNKit promises to scrub stinky bacteria from synthetic workout apparel. We put the stuff to the test during a week of skiing, running, and traveling—and found we smelled as good on day seven as we did on day one.

A classic workout to build race-specific strength, endurance, and mental toughness

Adding anaerobic training—sprints, plyometrics, and weightlifting—to your regimen will increase speed, power, and running economy

This brainchild of French exercise scientist Veronique Billat may be the best workout you've never done.

Two-mile repeats serve up a variety of benefits, whatever your training focus

Don't let decision fatigue daunt you. Underneath all those wrappers lay a few core principles to fuel your workouts.

Strength-train outside this summer

Teach your legs how to change gears, and to run fast when they're tired and heavy with these two speed sessions

Exercises guaranteed to up your game, no matter your sport

When it comes to fitness, take the home-field advantage

To simulate the unpredictability of your sport, add elements of randomness—and downright chaos—to your exercise regimen

You don’t always need a highly structured training plan to get into fighting shape

Sure, you could swim laps. But you can also enhance your performance with this in-the-water workout that will burn calories—and rejuvenate your body.

Simulating combat will whip your own butt into shape, while helping you build power and endurance

The resistance—and softness—of the sand and water will make you more versatile

A little of both, probably

Turns out you'll start to see and feel results from a new workout routine very quickly—sometimes after just one session.

The most common, performance-defeating nutrition mistakes—and how to fix them

This form of aquatic exercise is one of the best cross-training workouts for runners, injured or not.

Maximize your running progress with optimal recovery practices, from training strategies to nutrition

Not long, but you can maintain your fitness level with minimal workouts.

The pros and cons of training by time or training by distance

Some studies favor low intensity, some high intensity—read the fine print, and opt for both

Can't run? Keep your legs moving in the pool and maintain fitness while you overcome injury.

Everything you need to complete one of the hardest races on earth, including a 16-week training program developed by Spartan's own Dr. Jeff Godin; the ultimate Spartan nutrition plan; and advice from Hobie Call, the winningest Spartan racer of all time

I'm looking for ways to gauge improvement. If I can soak through my wicking base layers, I call that a good day. Do better athletes sweat more?

Get in the best off-road running shape of your life with this targeted training plan

Get ready to maximize the endurance, strength, flexibility, speed, and power you never knew you had.

Your foundation is built. It's time to tweak the beast.

We asked four top fitness coaches for their tape-it-to-the-fridge-door advice. Here's what they told us. (Bonus: We kick your excuses to the curb.)

To keep a workout program fresh, you need to make it your own, and some days you need to break the rules—within reason.

Ready to play your way to total fitness? We thought so. Kick-start your transformation with a visionary six-week approach to bringing body and mind together for strength, stamina, and your best performance ever.

Here's the deal: Ten breakthrough workouts from the best fitness experts and coaching pros around. Great tips for nutrition, gear, and fine-tuning your form. Killer ideas to keep you motivated. Ten high-performance meals you can prepare in less than ten minutes. It's everything you need to start fresh, keep your options wide open, and realize your fitness dream

The Fountain of Youth is a myth. But take heart: Intelligent training and an adventurous spirit will keep you running, kicking, screaming at the peak of your potential for years to come.