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Swimming fast can be simplified into a physics equation.

Ironman is back in Kona, but not everyone is happy about it. A new effort urges visiting triathletes to practice goodwill when visiting the Big Island.

The grueling battle between Dave Scott and Mark Allen at the 1989 Ironman World Championship is one of the most talked-about races of all time. We explain why Iron War still matters.

The two-time Ironman world champion may be a familiar name to most, but few fans outside of Germany know the full story behind Patrick Lange’s rise to the top. Read our complete bio.

A new campaign started by two age-groupers asks: Do you see yourself racing with your competition, or against them – and how does that attitude impact your performance?

Get off-road and get dirty with our guide to XTERRA and off-road triathlon.

This isn't the first time there have been two Ironman World Championships in the same year. We look back at a fateful February in 1982 that changed our sport forever.

"By the time I arrived, she was unconscious and concussed at first," said two-time Ironman World Champion Patrick Lange, who was on the scene. "[We] tried to hold her as stable as possible until [the] ambulance arrived."

How lessons from the marathon legend's master class can make you a faster triathlon runner.

The Hawaii Ironman World Championship’s wall has a name: the Natural Energy Lab.

We mined Ironman finisher data to find out what it takes to qualify for Kona — and what it means for athletes going forward.

The news from around the multisport world this week.

It's going to be an amazing two days of racing in Kona - and you won't want to miss a second! Watch all the action with the Ironman World Championship livestream on October 6 and 8.

This quick workout will help build strength and a range of motion in your ankles, knees, hips, spine, and shoulders

From Lucy Charles-Barclay to Linsey Corbin, it seems like stress fractures are sidelining everyone this year. Learn what causes stress fractures, how to diagnose a stress fracture, and what to do if you're hit with this common bone injury.

First-time Kona qualifier Jennifer Simmerman shares her five biggest secrets on how she went from a strong runner, to a solid triathlete, to competing in a world championship.

Beefiness is the name of the game when it comes to the latest wide rim offering from Hunt.

The Swiss star has admitted she unknowingly wore a prohibited wetsuit in the Collins Cup and Ironman Switzerland – but no retrospective action will be taken.

Quick answer: Yes. (If you can.)

We review the newest carbon triathlon wheels and compare them with an exhaustive five-point rating system along with specs, takeaways, and our hand-on testing notes.

It’s pure excitement and love and joy from Irontown on this usually unexceptional stretch of road.

In the past, Apple watches were a novelty act for serious endurance and outdoor athletes, but with an improved battery life and legit workout functions, the Apple Watch Ultra is actually in the (long) race.

Three of the fastest long-course age groupers in the world each share a swim, bike, or run session that they use to prepare for the big day.

Why do most triathletes use aerobars and put themselves in such a crazy position? We break down the basics of “riding in aero” and why you might (or might not) want to give it a try.

After three years, the Ironman World Championship returns to the Big Island with big plans, but a backlog of entries and two days of racing means a host of unique challenges for the organization, the racers, and the Kona community. We take a look inside.

Bob Babbitt shares what happened, and Brad Culp explains why it mattered.

We take a quick look at a busy weekend of pro racing in the U.S. and a weird weekend of racing overseas.

This year's Kona pro qualification period is over, and the list has a mix of former winners and veterans, but also some surprising stats on rookies and first-time Ironman World Championship starters. We've updated our list as of October 5 to reflect a few withdrawals and wild card additions.

These four strength exercises will help you stand tall — and boost your athleticism, too.

Despite flying under the radar for the U.S. Open, Collin Chartier rides and runs through an all-star cast to take home $100,000.

The news from around the multisport world this week.

After Taylor Knibb led for most of the day, Australian Ashleigh Gentle used a speedy run in hot conditions to make the pass in the final miles.

Super League Triathlon were filming the athletes at the beach and captured dramatic footage of the incident.

Charles-Barclay vs. Duffy vs. Knibb, the return of Sanders vs. Long: there's no denying the PTO U.S. Open is full of talent. Thorsten Radde previews the stacked field in Dallas, plus how to watch the free livestream.

This workout will teach you to push beyond your comfort zone during the second half to stay close to the leaders as you head out on the bike.

It can be very easy to train at a moderate intensity all the time, which can be a surefire way to plateau or even burn out. Here’s how polarized training can help prevent that.

The Super League championship series travels to Malibu this weekend. Here’s how to watch the livestream for free.

As a star athlete, Erin Baker lit the triathlon world on fire. As an advocate for equality, she did the same. The multi-time world champion from the ‘80s and ‘90s looks back at her career and the legacy she left behind.

A new study looks at how two diets - high-protein and high-carbohydrate - affect the athlete's gut microbiome and performance. The results may change the way you think about fueling.

Running after riding a bike is much different from running on fresh legs. Learn about the physiology of running vs. triathlon running, plus how to estimate your triathlon run time.

Your guide to transitioning from road to trail.

Whether you work in an office or on an ABC television set, convincing your coworker to do their first triathlon is a fine art—triathlete (and TV star) Karla Souza can help.

The Under Armour HOVR Machina 3 is made for the high mileage runner looking to finish strong

The Huntsman World Senior Games triathlon is changing the way many multisport athletes approach aging.

The two-time Olympian took two years away from racing and came back stronger than ever.

A bevy of setbacks from injury to personal turmoil to dashed Tokyo Olympic dreams hasn't slowed Spivey down; it's only made her stronger.

Free gear, training camps, and an "idealized pro experience" - but for age-group triathletes. What exactly comes with a slot in the Zwift Academy, and how does the whole deal work?

Though COVID isn’t going anywhere soon, the newer variants may have fewer long-term effects for something all athletes care deeply about: our hearts.

Working out and racing at altitude doesn’t have to be as scary as it sounds. Ignore the myths, and check out our expert-led strategies before you climb that elevation ladder.

With Kona less than 30 days away and a brief respite in the World Triathlon Championship Series, you’d think pro triathlon racing would chill for a moment. Instead, just about every corner of the globe saw some swim-bike-run action. Brad Culp recaps it all.

A solid Ironman marathon can be elusive if you're not a sub-12 hour finisher. Coach Alison Freeman explains why the wheels fall off during the run leg for so many long-course triathletes, and how to have a better Ironman run.

A rubber duck, prayer beads, and...condoms? We have questions.

Nothing against PB+J, but when it comes to sandwich recipes, you can do better. These towers of power are stacked with great flavor and nutrition for fueling your workouts.

The news from around the multisport world this week.

Canadian Lionel Sanders has one of the most notorious running styles in triathlon: On one hand, it won't win any beauty contests; on the other hand, it wins races. We take a look at how and why.

We take a close look at a pair of triathlon racing shoes that’s best described as “Cybertruck-meets-super-shoe.”

We review five of the most exciting new triathlon race-day shoes for fall 2022.

There's nothing worse than losing valuable seconds (or minutes!) in that in-between world from swim to bike and bike to run. This video and step-by-step guide to triathlon transitions will help you speed through like a pro.

The Super League championship series continues with a thrilling Enduro in Munich. Here’s how to watch the livestream for free.

Zwift releases their first piece of indoor training hardware with the new Hub smart trainer. We take an early look at their budget direct-drive offering.

Announcers picked up on a strange new piece of headwear from Specialized, but what is the mysterious head sock, and what does it do?

The retired lightweight American fighter dishes on why he’s giving tri a try, talks about the brutality of MMA workouts, and compares his old fight training against his new tri training.

Scientifically, we know that more pain doesn't always equal more gain, but why exactly are triathletes wired to think that suffering is the best measure of success?

This power-based swim set from a swimrun veteran will help you become a stronger all-around swimmer.

It’s Super League Championship season, and our columnist quickly tackles the important things like SLT teams and kits, as well as some very exciting rivalries played out in super-sprint time.

A firsthand account from an Olympic Trials swimmer and former pro triathlete on one of the most brutal multisport events—the One Water Race.

Triathletes, especially those racing longer distances, are often warned about low sodium levels in the blood - AKA hyponatremia. But hold off on the salt tabs! Dr. Stacy Sims explains why they're not the solution for exercise-associated hyponatremia, plus the strategies that actually work.

From cheese to leafy greens, it’s time to put something unexpected onto the flames tonight. Hello, grill master.

Swimming behind another athlete can save upward of 30 percent energy expenditure - that is, if you’re doing it properly.

You might not believe it, but there’s good news about being injured.

The news from around the multisport world this week.

But what does it take to keep this mysterious connector primed for sport?

When done properly and safely, riding in a group is fun and can be a great workout. Here are some tips.

Feeling ready to tackle an Ironman? Read our complete guide on how to go from a half to full.

A creative swim workout from Triathlete contributor and swimming all-star Sara McLarty.

The Super League championship series will kick off this weekend in London. Here’s how to watch the livestream for free.

World Triathlon Cup racing might not ring a bell, but it's produced some of the biggest names in tri.

The 2XU Malibu Triathlon brings together athletes, celebrities and Fortune 500 corporations, with the common goal of building awareness and providing key funds for pediatric cancer research at Children’s Hospital Los Angeles

Sun, sweat, and the occasional dip in the pool - it's no wonder your phone goes on strike from time to time. Here's how to fix a phone when it's overheating, submerged in water, or the battery starts to drain faster than usual.

Contrary to what you may believe, tri referees aren’t eagle-eyed on any one infraction, hungrily waiting to penalize an athlete. Instead, they’re more interested in keeping the race fair and safe.

In an emotional announcement, Reilly says he will be hanging up his mic at the end of 2022. We spoke with the Voice of Ironman only hours after his statement about why and what's next.

“I want [my daughter] to see what it looks like to pour yourself into your dreams, and that being passionate about your career and being a good mom are not mutually exclusive.”

Check out a few of our editors’ favorite things, and enter for a chance to win one of them!

We sit down with Long and his coach, Olympian Ryan Bolton, to take a look at how the American pulled off the fastest bike split in a stacked field at the Collins Cup.

Does the thought of doing a long swim set typically make you groan? Are you always looking for ways to put off that track workout? Reach into our bag of scientific tricks to get your brain on board with your body.

How do you get over a DNS (did not start)? Triathlon coach Gordo Byrn tackles this question.

Not sure what to eat while training for a 70.3? This day-by-day meal plan pairs your nutrition with the workouts in one of our most popular half-iron training plans.

“People reached out to us about how they wished they could train for endurance events like triathlons, but didn't feel like they belonged in that arena.”

The first World Cup on Norwegian soil plays host to two exciting battles, Emma Pallant-Browne adds another win to her resume in Austria, and more.