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Switzerland's Daniela Ryf is back in Kona to go after a fourth-straight Ironman world title.

We got a great look at Daniela Ryf’s brand new 2019 Felt IA FRD Disc

Bob Babbitt chats with Thiago Vinhal before the 2018 Ironman World Championship.

The ex-pro-turned-triathlete says endurance sport has taken him to limits and places he’s never felt before.

Bob Babbitt chats with David McNamee before the 2018 Ironman World Championship.

Bob Babbitt chats with Andreas Dreitz before the 2018 Ironman World Championship.

It was a rainy Tuesday afternoon in Kona, but that didn't stop the Ironman World Championship athletes from proudly representing their countries in the Parade of Nations

Kona 2018 athletes tell us what inspired them to take that first step into tri.

Like triathlon, David Knox’s quest to acquire every original Kona poster and signature from every world champion may seem quixotic, but it’s actually all about what you get along the way.

In May 2018, while out training for the Ironman qualifier race in her hometown of Boulder, Colo., 47-year-old Triny Willerton was struck by a pickup truck—now she's competing in Kona.

Tuesday's action included the IronKids Keiki Dip-n-Dash, Parade of Nations, and the opening of the Ironman Village expo. Check back to Triathlete.com daily for more from Kona.

Bob Babbitt chats with Braden Currie before the 2018 Ironman World Championship.

Bob Babbitt chats with Mirinda Carfrae before the 2018 Ironman World Championship.

Bob Babbitt chats with Jan Frodeno before the 2018 Ironman World Championship.

Bob Babbitt chats with Michelle Vesterby before the 2018 Ironman World Championship.

Bob Babbitt chats with Australia's Carrie Lester before the 2018 Ironman World Championship.

Bob Babbitt chats with Great Britain's Tim Don before the 2018 Ironman World Championship.

We spotted Natasha Badmann's unique-looking custom CAT Cheetah at the Kona Community Aquatic Center.

Bob Babbitt chats with the United States' Linsey Corbin before the 2018 Ironman World Championship.

Bob Babbitt chats with the United States' Jocelyn McCauley before the 2018 Ironman World Championship.

Bob Babbitt chats with the United States' Matt Hanson before the 2018 Ironman World Championship.

Bob Babbitt chats with Great Britain's Emma Pallant before the 2018 Ironman World Championship.

Bob Babbitt chats with the United States' Matt Hanson before the 2018 Ironman World Championship.

Bob Babbitt chats with Great Britain's Laura Siddall before the 2018 Ironman World Championship.

Bob Babbitt chats with Great Britain's Joe Skipper before the 2018 Ironman World Championship.

Bob Babbitt chats with the United States' Sarah True before the 2018 Ironman World Championship.

Bob Babbitt chats with the United States' Tim O'Donnell before the 2018 Ironman World Championship.

Bob Babbitt chats with Australia's Sarah Crowley before the 2018 Ironman World Championship.

New Zealand's Teresa Adam had a breakthrough win at this year's Ironman Asia-Pacific Championship in Cairns, Australia

The classic tri bike unveils new design at Kona launch party.

Ben Hoffman had to pull out from the big race last week, but he's still on the island and shared his prototype Specialized S-Works Shiv Disc with us.

New Zealand's Braden Currie is looking for a breakthrough race at the Ironman World Championship.

Or so it would seem.

What to know about the $14,000 “Kona-Optimized” bike.

Ken Glah’s love affair with the Hawaii Ironman began back when Ronald Reagan was re-elected president—this year he’ll be celebrating 35 straight years of racing on the Big Island.

Ironman is celebrating the 40th anniversary of this iconic race. Here’s a list of helpful facts to know before watching the big show this Saturday, Oct. 13.

The excitement is building on the Big Island.

Bob Babbitt chats with Canada's Lionel Sanders before the 2018 Ironman World Championship.

Bob Babbitt chats with Denmark's Helle Frederiksen before the 2018 Ironman World Championship.

Bob Babbitt chats with Great Britain's Lucy Charles ahead of the 2018 Ironman World Championship.

Bob Babbitt chats with the United States' Ben Hoffman in Kona. Hoffman was forced to pull out of the race with a stress fracture.

American Matt Hanson is looking to have a breakthrough race at this year's Ironman World Championship.

Bob Babbitt chats with Spain's Javier Gomez before the 2018 Ironman World Championship.

Bob Babbitt chats with American Heather Jackson before the 2018 Ironman World Championship.

Bob Babbitt chats with the United States' Andrew Starykowicz before the 2018 Ironman World Championship.

Bob Babbitt chats with Germany's Sebastian Kienle before the 2018 Ironman World Championship.

A close-up look at the Diamondback Serios F American Matt Russell will ride at Saturday's Ironman World Championship.

Bob Babbitt chats with Kona rookie Anne Haug before the 2018 Ironman World Championship.

Bob Babbitt chats with Susie Cheetham before the 2018 Ironman World Championship.

Bob Babbitt chats with Ashleigh Gentle and Josh Amberger before the 2018 Ironman World Championship.

Bob Babbitt chats with inspirational athlete Marcus Cook before the 2018 Ironman World Championship.

Bob Babbitt chats with Belgium's Frederik Van Lierde before the 2018 Ironman World Championship.

Get a close-up look at the Trek Speed Concept American Linsey Corbin will ride at this Saturday's Ironman World Championship.

American Tim O'Donnell is looking to return to the podium at this weekend's Ironman World Championship in Kona.

In a place created entirely by molten lava, this year’s eruption on the Big Island reminds us that the volcanoes are in charge of our most hallowed race’s grounds.

Bob Babbitt chats with Patrik Nilsson before the 2018 Ironman World Championship.

Bob Babbitt chats with Gordon Haller and Dave Orlowski before the 2018 Ironman World Championship.

It's officially race week at the 2018 Ironman World Championship.

Want to follow the Ironman World Championship this Saturday, Oct. 13? Here’s what you need to know.

Finland's Kaisa Sali will look to improve on her pair of fifth-place finishes (2016 and 2017) this Saturday as she competes against the world's best.

We've arrived on the Big Island and we're excited to bring you exclusive content, in-depth interviews, daily video recaps and more!

There's a new potential bucket list adventure taking place in Eastern Spain.

Triathlete and Bob Babbitt have teamed up to bring Kona to you every day LIVE.

We preview the professional women's field for the 2018 Ironman World Championship.

We preview the men's professional field for the 2018 Ironman World Championship.

An inside look at what it takes to fuel the sport’s top pros in their IMWC lead-up.

Ben Hoffman is out of this year’s Ironman World Championship due to a sacral stress fracture.

Triathlete contributor and swimming all-star Sara McLarty shares another swim workout to try this weekend.

Lionel Sanders has been to some pretty dark places, but now he's one of the most popular pro athletes in the sport. And he's just getting started. 

This weekend we’ll be livestreaming MLT’s championships featuring the sport’s first-ever cryptocurrency prize purse.

Dream of toeing the line on the Big Island? Your road map begins here.

A bike accident left him paralyzed from the waist down, but Glenn Hartrick found a way to make his Kona dream come true.

A seemingly season-ending injury doesn't mean you have to give up on your goals.

Use these expert tips based on three-time world champion Sebastian Kienle's mechanics to help fix up your own form.

Both of the 2017 champions will be back to defend their titles.

More than 1,400 athletes representing 30 countries and 48 states took part in the 2018 Ironman Maryland.

Now in its sophomore season, the Super League Triathlon Series is bringing exciting (and spectator friendly) racing to the pro ranks.

The USA’s best bets for taking back the Kona crown in 2018.

Our November 2018 issue is here to help you become a healthier, happier triathlete as you head into the off-season.

Half-framed sunglasses hit the sweet spot for triathletes with protection on the bottom and unobstructed vision in the aero position on top.

Athletes competed in Brazil, Chile, Utah, New York, and South Carolina.

Two Brazilians earned the victories on home soil at Sunday's Ironman 70.3 Rio de Janeiro.