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Use these running interval workouts - based on advanced training methods proven effective by scientists, coaches, and athletes - to become a fitter and faster runner.

Pro triathlon analyst Thorsten Radde digs deep into the latest women’s PTO rankings, looking at those who struggled in 2023, those who bounced back from a rocky midseason, and those who rose quickly in the rankings in 2023.

Ramp up your VO2 max, anaerobic capacity, and neuromuscular power - and have fun while you're doing it.

With so many options on the market for tri bikes, we tapped fit expert Mat Steinmetz to break down the different types of tri bikes to help you choose your perfect steed.

Get caught up on the most-read and most-discussed stories of October 2023 in our Big Monthly Digest of triathlon news.

How did Dan Plews set a 7:56:56 record for fastest age-group Ironman finish ever? Follow his eight rules for success.

From Britney Spears and Eminem to NF and Tiësto, these are the songs that played on a loop during Ironman World Champion Lucy Charles-Barclay's unique Kona build up.

Just in time for raiding your kids' trick-or-treat stash, our tester goes deep on the hotly-debated topic of gummy bears vs. energy chews.

Former pro and current coach Tim Reed upends the conventional wisdom that a full-iron event requires you to suffer all day.

Running from hut to hut over multiple days among dramatic mountains with others offers a unique format to experience awe, sustained immersion in landscapes, and crazy fun.

Blinged-out bar tape, alien socks, and Altra shoes with drop - these are a few of the things our editors used and loved this month.

Pick a set based on your experience level and give this workout a try this weekend!

With more and more events being canceled and postponed due to both natural and manmade interruptions, what can a triathlete do?

"Shadow of a Wheel: Once in a Lifetime" is now streaming on Outside Watch - perfect for indoor trainer rides and treadmill runs.

With this plyometric warm-up for runners, you're just a hop, skip, and jump away to a faster run with less effort.

A new federal law, the Rodchenkov Act, has the potential to dramatically clean up international sports. A case involving a Texas doping ring illustrates how the new legislation works.

Lucy Bartholomew just became the second woman to race UTMB and the Ironman World Championship in the same year. Here's what she learned.

This week’s One-Hour Workout comes from Coach Ryan Bolton’s How to Get Race Ready in Six Weeks training plan.

No longer "just a swimmer," Lucy Charles-Barclay won the 2023 Ironman World Championship in her own way, and on her own terms. As she ponders what's next, her competition has a different question: What will it take to beat her?

An ER doc looks at a new study on how exercise impacts the immune system, and explains how to prevent illness after a big race or training day.

With a few tweaks and changes in focus points, a triathlete can effectively train for a solid offseason marathon, while still keeping some of the balance provided by swimming and biking.

In a world where excellent customer service is about as rare as a tri bike for under $3,000, we call out a few standouts still toeing the (phone) line.

A heartbreaking sprint finish, a costly detour, a debut win, and one decision to change a whole series - it was a wild weekend in triathlon.

Underwhelming response for the women’s Nice 2024 event leads to addition of slots at select 70.3 races and for loyal age-groupers.

When illness or injury forces you to take a complete break, researchers have some ideas on how to limit the fall-out.

Light and speedy, these shoes will help you reach your workout PRs.

There's plenty of variety in this fast, fun, and dynamic swim workout.

Your body runs on hormones - learn how to feed them right with this men's guide to eating for hormone health.

Patrick Lange, Nikki Bartlett, Cam Wurf, and more - watch the free livestream for Ironman Portugal this Saturday, October 21.

What you eat and how much you eat relative to your training can make a big impact on hormone health for women in endurance sports.

We take a look at the bikes ridden by the ten fastest cyclists in the pro race at the 2023 women’s Hawaii Ironman World Championship in Kona.

These short intervals will get you working, but not too hard!

"Back when we first started, I couldn’t imagine a scenario like we saw on Saturday. It just seemed so far off."

Here’s a look at the shoes worn by the top 10 finishers at this year’s women’s world championship race in Hawaii.

The answer isn't as simple as you think.

Data from the women's 2023 Ironman World Championship makes one thing very clear: Women are crushing the triathlon game. Now what?

There was some fast and furious racing on the Big Island, but not everyone made it to the finish chute. What happened to those who didn’t?

We know that meditation benefits our mental health. Could it do the same for our physical healing?

Lucy Charles-Barclay's win at the 2023 Ironman World Championship showed that by doing the work, we not only become worthy - we become greater than we ever thought possible.

After four second-place finishes, Lucy Charles-Barclay writes history (and a new course record) at the first-ever women's-only Hawaii Ironman World Championship in Kona.

Feast upon the data and analysis behind the frames, components, aerobars, wheels, and more in the women's 2023 Ironman World Championship bike count.

"The quality is just so amazing that you have so many potential athletes who can win this race. You would need an absolute perfect race to be on top of everyone."

Bob chats with the first female CEO of USA Triathlon about the first-ever all-women’s day at the Ironman World Championship and the Ironman’s long history of equity.

As we celebrate the first-ever women’s only Ironman World Championship, this history-making duo joins Bob Babbitt for a trip down memory lane.

Mel McQuaid is the 50-year-old rookie here at the Ironman World Championship. Bob and Mel chat about how her mindset has changed as she has aged and the role it plays now in her training and racing.

While the former Brazilian pro has 14 top-ten World Championship finishes, this year’s Kona start line looks slightly different for 60 year-old Fernanda Keller.  

A frank conversation with Ironman CEO Andrew Messick reveals details about the pro series, why now, what it could mean for pro world championship qualification in the future, and more.

2,000+ age-groupers, 53 pros, and 1 history-making day - we've got all the numbers behind this weekend's 2023 women's Ironman World Championship event in Kailua-Kona, Hawaii.

She’s no longer the “unknown” mom from the United States - now there is a target firmly on her back as she comes into this year’s Kona race as the defending champion.

Surviving a boat wreck, adrift at sea, and coming back from that to become a professional triathlete: Els Visser has one amazing story to tell.

The "Always Smiling" triathlete is back racing in Kona after a few years away. We catch up with the now-mom of two before she returns to the course this weekend.

Hawaii Ironman World Championships is all about being prepared, so nothing throws a bigger wrench into the field than a strong, unknown quantity on the start list.

The indoor training company’s latest smart trainer promises easier indoor training and new virtual shifting for all.

With one of the deepest, most well-rounded fields ever, and a historic women’s-only event, the 2023 Hawaii Ironman Championship could be one for the ages. We break down who to watch, when, and where.

The 60 year-old former pro is ready to race her 27th Ironman World Championship this weekend.

Haley Chura comes into this year’s race feeling ready to have a great day - and she knows she’ll be energized by all the athletes she’s coaching as they share the course with her.

Sarah True won Ironman Frankfurt in July, and she's looking to have a special day in Kona on Saturday.

At 73 years old, Sandi Wiebe, the “elder stateswoman” of this year’s Hawaii Ironman World Championship has mastered the art of blissfully unaware winning.

Our up-to-date breakdown of the top contenders for the podium at this year’s Hawaii Ironman World Championships women’s event.

The spotlight is shining brightly on young Taylor Knibb as the Olympian and two-time 70.3 World Champion makes her debut at the full Ironman distance here at the World Championship in Kona.

Kat Matthews comes into this year’s Ironman World Championship as both a crowd favorite and a podium favorite.

Last year, she finished 5th at her debut in Kona at the Ironman World Championship. Can Lisa Norden improve on that this year?

It's going to be a history-making day in Hawaii - and you won't want to miss a second! Watch all the action with the women's 2023 Ironman World Championship livestream on October 14.

With the number of slots available for the women's Hawaii Ironman World Championship increasing nearly fivefold, is Ironman letting too many female triathletes into Kona too quickly? We break down the data.

Travis Mundell recaps a weekend of pro triathlon racing at Challenge Barcelona, 70.3 Asia Pacific Championships, and World Cup Rome.

A simple routine (including yoga poses) that can make all the difference for your recovery.

Three of the fastest long-course age-group women in the world each share a swim, bike, or run session that they use to prepare for their big day at the women's 2023 Ironman World Championship in Kona.

Coach Sara McLarty recommends trying this swim workout 2–3 days before an event as a pre-race tune-up.

Your tires actually play a surprising role in how fast you ride, and what you think you know about rolling resistance is probably wrong.