Susan Lacke

The Ironman Pro Series heads to Wales for the first time - here’s who (and how) to watch the action on the free Ironman 70.3 Swansea livestream.

Triathlete's 2025 Community Survey results are in. We found more athletes are traveling, but going on fewer trips than in 2024. See how your travel dreams stack up to the average athlete.

Three Ironman World Champions and an all-star cast of men's pro triathlon will face off at Ironman Frankfurt in what could be the ultimate preview of this year's Ironman World Championship.

Goggles are goggles, right? Nope. We hands-on review the best triathlon goggles in 2025 and reveal the most popular brands for triathletes.

The Ironman Pro Series goes Down Under - check out the start lists and race updates for Ironman Cairns here, plus how to watch the free livestream on race day.

We learned how much you’re (really) training, your favorite distances, and more in our massive community survey. Snoop on your fellow triathletes inside.

A shocking bike crash for Hayden Wilde, an epic Everest triathlon comes to a close, and the Midwestern triathlon race named the best in the USA - catch up on the triathlon news you may have missed this month.

From buffets on the bike to panic training, avoid these very dumb things.

We've made a 2025 update to our exhaustive list of the greatest triathletes, spanning four decades of racing, an international roster of the best pro triathletes in history, and highlights from every distance and discipline of triathlon.

The Ironman Pro Series continues with a women's-only, full-distance race in Hamburg - see the pro start lists and race updates here, plus how to watch the free livestream on race day.

Nearly 100 top triathlon pros will race 70.3 Aix-en-Provence on May 18 - see the start lists and race updates here, plus how to watch the free livestream on race day.

A new Ironman 70.3 race in the United States, a T100 age-group world championship, and Alex Yee’s marathon debut - plus more triathlon news from April 2025.

The two-day Ironman World Championship will end after this year. What does that mean for the women's race? We sit down with Ironman CEO Scott DeRue.

Will Paula Findlay and Sam Long defend their titles? Here's how (and whom) to follow at the latest Ironman Pro Series race at 70.3 St. George.

This is the rivalry triathlon has been waiting for.

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

The Ironman Pro Series continues with a full-distance race in The Woodlands - see the (Ironman) Texas-sized pro start lists and race updates here, plus how to watch the free livestream on race day.

The Ironman Pro Series heads to Europe with a first-ever race in the Venetian Riviera. See the start lists and race updates here, plus how to watch the free livestream on race day.

From establishing training zones to making sure you don’t overdo it, heart rate monitors are a triathlete’s best friend. We tested and reviewed offerings from Wahoo, Garmin, Polar, Whoop and more to find the best heart rate monitors for triathletes

Members of the Infinite Multisport Triathlon Club tested and reviewed headphones for swim, bike, and run workouts so you don't have to - here's what they had to say about Apple, Bose, H2O Ultra, Suunto, and more.

A Canyon bike recall, new investors for the PTO, and a new paratriathlon world record - catch up on what you may have missed in multisport for March 2025.

Studies show exercise can change your biological age - but how does endurance exercise, specifically, add or subtract years to that magic number?

For its 30th anniversary, the XTERRA World Championship will return to the USA - but not Maui.

We got punctured, swabbed, and wiped (yes, wiped) to determine the best on-demand health tests for athletes - no doctor’s office required.

Get excited! More than 100 top triathlon pros will race 70.3 Oceanside on April 5 - see the start lists and race updates here, plus how to watch the free livestream on race day.

If downhill biking makes you nervous and you find yourself riding your brakes the whole way, you’re missing out on valuable time savings. Learn how to bike downhill fast for the optimal triathlon finish time.

The first full-distance race of the Ironman Pro Series is here! Here’s who (and how) to watch the action on the free Ironman South Africa livestream.

USA Triathlon CEO Vic Brumfield's candid interview on a (surprisingly) growing younger demographic, vanishing local races, a historic American Olympics, a shifting collegiate strategy, and more.

The Ironman Pro Series kicks off its 2025 season with fast-and-furious racing in Australia - here’s who (and how) to watch the action on the 70.3 Geelong livestream.

A Kona decision? Back-to-back sprint finishes? As the 2025 triathlon season revs up, our editors and contributors gaze into the crystal ball and tell us what they see.

The return of the Malibu Triathlon, the triathlete who won the “Athletes' Athlete of the Year” award, and Supertri goes all-in on age-groupers - catch up on what you may have missed in multisport for February 2025.

The International Testing Agency has announced that Simmonds has tested positive for Ligandrol, a banned substance, which she claims was caused by exposure through “intimate relations” with her partner.

Models from Asics, New Balance, Hoka, and more have been listed as “prohibited” by Ironman for the 2025 season. Ironman head referee Jimmy Riccitello explains why.

Love looks a little different when you’re a triathlete. From amped-up texts to post-race snacks, these are the ways we know our partners really love us.

Hours upon hours of movies, shows, and short films await on Outside TV - start streaming and actually enjoy your trainer and treadmill time this winter.

Changes include new categorization for age-group athletes and requirements for elite transgender women to participate in academic research.

T100 inks five-year deal for championship host city, a new documentary showcases trailblazing women in triathlon, and an eye-popping Morgan Pearson PR - catch up on what you may have missed in multisport for January 2025.

Aligning your training cycle with your menstrual cycle could have performance benefits. A sports physiology researcher weighs in.

Test your triathlon history knowledge (or just get a massive nostalgia bomb) with this look at historic and modern-day triathlon photos.

More sprint finishes, less swim cancellations, please.

Wondering what you missed for triathlon stories in 2024? We recap the 12 most-read stories so you can catch up before the new year.

From the shocking and scandalous to the inspiring and history-making, these are the 24 news headlines that mattered to the sport of triathlon in 2024.

If a picture is worth a thousand words, then a great picture is worth a million. Check out the 2024 triathlon season through the eyes of our sport's finest photographers.

The 26-year-old American unleashed yet another dominant performance on the global stage, while second-place Kat Matthews secured the required points for the overall Ironman Pro Series win.

We've seen some amazing performances on the 70.3 circuit this year, but who is the best of the best? Watch the battle play out on the free Ironman 70.3 World Championship livestream, available exclusively on Outside TV.

A seven-year collegiate streak comes to an end, an Olympian takes the helm of a new development team, and a major triathlon bike recall - catch up on what you may have missed in multisport for November 2024.

The penultimate race in the 2024 Ironman Pro Series is here! 2024's Ironman 70.3 Western Australia boasts the largest professional start list in the event’s 20-year history - here's who (and how) to watch.

Getting on and off your bike—seems simple enough. But on race day, a well-executed mount and dismount plan can mean the difference between an awkward (and slow) transition or a smooth (and speedy) one.

The T100 triathlon tour saved the best for last. Here's everything you need to know about the T100 grand final in Dubai, from start lists to a link for the free livestream on Outside Watch.

DeRue has had "exciting" conversations with athletes, politicians, and community members about the Ironman World Championships - but where will they lead?

Now on the shelves at Apple Stores nationwide, these smart swim goggles are going mainstream. We pool swim and open-water swim to test the newest updates of Form’s unique heads-up display goggles, the Smart Swim 2.

The series formerly known as Super League Triathlon has a new name, new locations, and new excitement for 2024. Get updated results, standings, expert insights, and everything you need to know about the Supertri race series.

A new World Triathlon president, an Ironman (CEO) PR, and the tri gear set to appear on Apple Store shelves - catch up what you may have missed in multisport in October 2024.

The 2024 Ironman World Championship in Kona was one of the fastest, most exciting, and unpredictable races ever. Check out the moments that mattered with original photography from Brad Kaminski.

"Call us masochists, I suppose. But boy, do we love to do hard things."

On a day of big performances and big blow-ups, Germany's Patrick Lange ran away with his third Ironman World Championship title and a new Kona course record.

The fastest, funkiest, freshest bikes from age-group check-in at the 2024 men's Ironman World Championship in Kona.

Experience one glorious half-mile of pants-free peacocking along Ali'i Drive through the lens of Triathlete staff photographer Brad Kaminski.

How did the Kona Underpants Run get started? Believe it or not, it was a protest against triathletes.

Viva Las Vegas! Get the start lists, updates, livestream information, and more from the penultimate T100 Tour race in Lake Las Vegas.

It's going to be a thrilling day in Kona - and you won't want to miss a second! Watch all the action on the men's 2024 Ironman World Championship livestream on October 26.

Ironman brings back an old favorite and announces a new location, PTO changes plans for Grand Final, and the end of a 26-year triathlon career - catch up on what you may have missed in multisport in September 2024.

With a nearly flawless race in France, Germany’s Laura Philipp powered to the win and her first Ironman World Championship title.

"It’s with a heavy heart that I share I won’t be able to race in the Ironman World Championships this Sunday."

It's going to be a history-making day in Nice - and you won't want to miss a second! Watch all the action on the women's 2024 Ironman World Championship livestream on September 22.

We've compiled the qualifiers for the women's 2024 Ironman World Championship start list, with insight and analysis on how the race is shaping up, and some stats about the pro field.

These athletes have all won the coveted Ironman World Championship title—some of them more than once—but what are they doing now?

DeRue explains why some locations were added (and some were removed) from the 2025 Ironman Pro Series schedule, as well as insight into a new prize-money structure.

This list includes some of the sport's top names, proving that the brutal conditions of world championship racing can get the best of anyone.

UPDATE: Tomas Rodriguez Hernandez has agreed to serve a two year period of ineligibility after doping samples collected at Ironman Texas tested positive for clomiphene. He will now also forfeit prize money, standings, and points from the event.

Sleeveless wetsuits are cheaper, less restrictive, and cooler—but when should triathletes wear one, and why?

"It's more than just a race—it's a way to show the world that Deaf and hard-of-hearing athletes can compete at the highest levels."

Shaved legs or au naturel? Sprint in the finisher's chute or jog it in? And which is more impressive: Winning the Olympics or the Ironman World Championship?

It's about to get hot, hot, hot in Ibiza! Get the start lists, updates, livestream information, and more from the latest T100 series showdown in Spain.

Two top triathlon pros get married, another pro announces season-ending surgery, and an age-grouper sets a world record - take a look at what you might have missed in multisport in August.

"The water quality at the competition venue on Sunday 1 September is not suitable for swimming and above the threshold established by World Triathlon."

The Ironman Pro Series goes to Austria this weekend - check out the start lists and race updates for Ironman 70.3 Zell am See-Kaprun here, plus how to watch the free livestream on race day.

Your guide to “down there” drama.

Our little sport doesn’t always make the news, but when it does you can be sure it’ll be for something wacky. From viral videos to appearances on late-night TV, here are seven times triathlon entered the national conversation.

From record-breaking performances to amazing comeback stories, this season has been full of compelling storylines from pro and age-group triathletes alike. We lift out the ones you might have missed.

Chlorine is great for keeping pools clean. It’s not so great for your hair.

Estonia is the next stop on the Ironman Pro Series - check out the start lists and race updates for Ironman 70.3 Tallinn here, plus how to watch the free livestream on race day.

90 women and 90 men have qualified for the 2024 Ironman 70.3 World Championship. Here's who made the cut and how to watch the 70.3 World Championship livestreaming exclusively in North America on Outside TV.

From entry-level tri suits to super-premium aerodynamic threads, we hands-on review seven of the best triathlon suits for athletes of every level in 2024.

What is clomiphene, the drug at the center of the Tomas Rodriguez Hernandez anti-doping news? Can eating eggs really cause a positive drug test? We went to Dr. Mario Thevis, researcher and director of the Center for Preventive Doping Research, to get answers to the questions everyone's asking.

Recent high-profile cases have put triathlon's anti-doping efforts in the spotlight. We lay out how the drug testing process works in triathlon, plus who gets tested, when, and how.