Ironman

We asked our expert tri data scientist to dig into the results of our sport's wealthiest 1%.

When you decide to commit to 2.4 miles of swimming, 112 miles of biking, and 26.2 miles of running, you want to be sure you’re picking the best Ironman or iron-distance event for your big day. We can help.

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.

Looking for a little (legal) assist in the swim leg of your next race? Data scientist Alfredo Molinas breaks down the stats to find the fastest Ironman and 70.3 swim courses.

An Ironman distance triathlon—sometimes called the iron-distance—is 140.6 miles. But why?

Hint: There isn't really an Ironman world record. But there are some fastest-known Ironman times.

CEO Andrew Messick says this October will be an experiment.

We do a deep dive on exactly how much training it takes to excel at long-course racing—whether you're a world-class pro or a weekend warrior.

World Triathlon had previously issued sanctions against the country.

The changes the body undergoes in 12 hours of extreme exertion are similar to some that occur over 20 years on inactivity.

The first-ever Ironman event in the African interior could grow the sport there.

Yes, some Ironman and 70.3 courses are simply faster (or slower) due to the course itself. But that's not the whole story. Take a deep dive into the data from 2021 Ironman and 70.3 races.

It's the perennial triathlete question: what's a good time. To answer, we've recruited a data expert to break down "good" triathlon times by distance, course, and age.

A number of race organizers are making a serious commitment to bring triathlon to the mainstream. Can it actually work?

The answer isn't as simple as you think.

Sure, a marathon and Ironman run leg both cover 26.2 miles - but that doesn't mean they're the same. Our experts lift the veil on the mysteries behind the elusive "standalone triathlete marathon." Read on for tips on pacing, nutrition, and predicting how fast you can actually go.

Going out? Ordering in? Eat this, not that.

While racing 140.6 miles of swimming, biking, and running may feel like a daunting task, our editors have compiled our vast resources into a comprehensive guide on how to train for an Ironman.

Gunning for a PR or trying to choose a first-time iron-distance event? We dug into the stats to find seven of the “easiest” Ironman courses that'll help.

It’s easy to get swept up in the excitement of a busier race calendar, but is doing two (or more) iron-distance races a good idea?

I finished IM CDA in 11:09. On a 100-degree day, here's everything that worked—and what definitely didn't.

A race director explains the logistics of utilizing the changing tent (or changing clothes) during a triathlon.

The iron distance demands respect. We take a look at what it takes to be ready to tackle one of triathlon’s longest days—and who probably shouldn’t.

By letting go of expectations and focusing on process, you can achieve more.

Check out Adam Chase's author page.

Yes, finishing an Ironman can be amazing—but there are also downsides. Should you take it on?

Get ready for obsession!

The U.S. District judge ruled Ironman's "no refunds" clause was fair and reasonable.

And the PTO gets involved, citing the appeals process and the denied therapeutic use exemption for pneumonia.

Long-time USAT and ITU board member Barry Siff talks to Jesse Du Bey about how Ironman has changed and where it's going.

Ironman Tallinn went off this weekend—with 1,500 athletes across the full and 70.3 distance races. Here's what this return to racing looks like.

If you want to win a 70.3 Worlds slot via the Ironman VR Championship series, then you need to pay attention to the rules.

Because of the ongoing COVID-19 pandemic, the rescheduled events are officially off.

Pro purses and World spots will reflect how many pros are able to compete in a race—when there are races again.

While athletes are frustrated with a lack of information and options, they might not have legal recourse.

With safeguards in place, roughly 1,000 participants are registered to race on June 28—despite a sharp rise in COVID-19 cases in both Texas and locally in Lubbock.

The Big Island and Kailua-Kona have kept COVID-19 at bay, but now face economic challenges without tourists. What will triathletes see when Ironman eventually returns?

As virtual racing grows, so do questions over fairness and consistency.

Athletes will be able to earn a spot to 70.3 Worlds in New Zealand over a best three of four virtual race omnium—which they're calling the Championship Series.

As the world tries to limit the spread and fatality rate of the COVID-19 pandemic, race directors grapple with the possibility of no mass events in 2020.

With race cancelations decimating the triathlon schedule, Ironman is launching its own virtual training and racing platform.

ROKA is providing the ultimate swim package to one lucky winner so you can train and race like the reigning Kona swim record-holder!

Tim Don’s sponsor On Running teamed up with Emmy-award-winning director Andrew Hinton to create a must-see 28-minute film about overcoming adversity called The Man With the Halo.

Ready to see significant progress in your Ironman goals, and still maintain a bit of a life balance? Here's your plan!

After years of explosive growth, triathlon participation is hitting a plateau.

Check out Jené Shaw's author page.

Ironman today announced the addition of the Ironman 70.3 Asia TriClub Championship event.

The change in ownership will mean that the organization will operate six of the nine events in the World Triathlon Series.

Ironman today announced the overall All World Athlete (AWA) Champions for each age group category.

Ironman world champions Lori Bowden and Heather Fuhr will be inducted into the Ironman Hall of Fame.

The new rules aim to more closely align with the ITU. Jimmy Riccitello has also been named Head Referee for Ironman.

Ironman will redistribute pro prize money in 2015, will pay 10 deep at select races.

Ironman 70.3 Victoria will take place on June 15, 2014.

Check out Aaron Hersh's author page.

American Linsey Corbin runs the Natural Energy Lab in Kona, Hawaii while preparing for the 2013 Ironman World Championship.

Australia's Pete Jacobs traditionally does only two run workouts in the week leading up to Ironman Hawaii.

Chris McCormack weighs in—Ironman vs. short course: Which is harder?

Craig Alexander is riding a Specialized Shiv S-Works with Shimano Dura-Ace Di2 components and a Pro Missile EVO aerobar.

Check out Aaron Hersh's author page.

Michael and Andreas Raelert have refined the setup of their BMC TM01 for Ironman Hawaii with the help of Stefano Cattai.

Check out Aaron Hersh's author page.