Updated September 8, 2025 12:01PM
2025 Men's Ironman World Championship Race Week Live: Croissants, Pro Bikes, Maritime Alps, and More
Triathlete's editors are on the ground in Nice, France, bringing you live, behind-the-scenes coverage you can't find anywhere else. From pro and age-grouper interviews to pro bikes and gear, check back often on our live blog for the latest.
(Photo: Abby Levene/Triathlete)
France is the center of the triathlon world this weekend as the men’s 2025 Ironman World Championship gears up for one of the most spectacular showdowns in the history of the race. The pro field features all the best men’s long-course triathletes from around the globe, including four past Ironman World Champions, a current iron-distance record holder, and hungry young stars looking to claim their spot among the legends of the sport. They’ll be joined by more than 2,000 of the fastest age-group men from around the world, who will take on one of the hardest courses on the Ironman circuit.
This weekend also marks the final chapter in Ironman’s two-day, two-location world championship era, which will end after the women’s race in Kailua-Kona on October 11. After three years of separate race weekends for men and women In 2026, the two fields will reunite in Kona for the return of the one-day race in Hawaii.
To give the final French world championship a big sendoff, the Triathlete team is on the ground in Nice, bringing you all the triathlon news, analysis, pro bike galleries, and more in the lead-up to the big show on Sunday, September 14. Bookmark this page, which we’ll update daily with the latest insider from the men’s 2025 Ironman World Championship.
The free Ironman World Championship broadcast will stream live starting at 11 p.m. ET/8 p.m. PT on September 14 on OutsideTV (Outside+ members can access the broadcast on-demand after the race – become a member today.)
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Triathlete‘s 2025 men’s Ironman World Championship race week live blog
7:44 p.m. Monday: Place your bets – who will win on Sunday?
The last time the men raced the world championship in Nice, we saw a rewriting of the Ironman World Championship playbook. Yes, the new course (which is much different from what we were used to seeing in Kona) had a lot to do with it. But as Triathlete editor-in-chief Chris Foster wrote after the 2023 men’s race, it’s also because triathletes have evolved from building dominating leads via a single sport to becoming well-rounded, complete athletes who can back up a strong bike with an almost equally strong run. In other words: “RIP Überbikers, Vive La Übertriathlete.”
Trirating expert Thorsten Radde has identified nine such übertriathletes in this year’s men’s race. From frontrunners like past champions Patrick Lange (DEU) and Kristian Blummenfelt (NOR) to dark horses like Rudy von Berg (USA) and Marten Van Riel (BEL), Radde analyzes strengths, weaknesses, and winning odds for your betting pleasure here. Maybe it’s time to make a friendly wager with your tri club buddies?
1:13 p.m. Monday: Not hygge, but hogge
Kristian Hogenhaug’s journey to the 2025 Ironman World Championship was anything but linear. In a pre-race chat with contributor Tim Heming, the Danish pro talked about his experimental approach to triathlon, which was sometimes successful and sometimes destructive.
“For many years, I thought I had to lose weight, and so maybe got hyper-focused on it and would eat less than needed at essential parts of the day, like after training, where the body needs it the most,” Hogenhaug said. “That can be fine for maybe a few weeks, and then the training starts to get worse, you feel more tired, and you also feel the urge to eat more sweet things because you’re just tired. If you have a yo-yo weight for a long period, it starts to wear the body down.”
12:24 p.m. Monday: Age-groupers gear up for the race of their lives
Preparation is key for the Ironman World Championship course in Nice, which features a 2.4-mile swim through sparkling Mediterranean waters, a 112-mile bike ride through the challenging terrain of the Alpes-Maritimes, and a 26.2-mile run through the vibrant energy of the Côte d’Azur city center.
Three age-groupers – Australia’s Samuel Askey-Doran, Andrew Woodroffe of Scotland, and Spaniard Ross Welton – shared their key workouts to gear up for the 2025 race. Add them to your training plan for this week to swim, bike, and run like an Ironman World Championship contender!
8:50 a.m. Monday: Cam Wurf does Cam Wurf things (and we love him for it)
How does one prepare for the mountains of the Ironman World Championship course in Nice, which features 8,000 feet of climbing over 112 miles? If you’re Aussie pro Cam Wurf, you do a bonkers training ride that covers an entire country. We caught up with the 42-year-old ahead of this year’s race, where he shared the details on his 191-mile training ride around Andorra (which he posted to Strava with the ever-relatable title “Keeping myself busy while the in-laws are in town”).
![An image of a recent Strava workout Cam Wurf completed with the caption: "Keeping myself busy while the inlaws [sic] are intown [sic]."](https://cdn.triathlete.com/wp-content/uploads/2025/08/Keeping-myself-busy.png?width=615)
8:37 a.m. Monday: A Nice finale
For the last three years, the Ironman World Championship has employed a two-day, split-gender format, where the men’s and women’s race locations alternated each year between Nice and Kona. The format was initially implemented to address a backlog of world championship athletes from canceled races during the COVID-19 pandemic, as well as trial a women’s-only race to address gender parity in slot allocation and broadcast coverage. The original plan was to hold two races through 2026, then evaluate and determine next steps.
This year, Ironman CEO Scott DeRue announced the race would return to a one-day format in Kona starting in 2026, making this year’s race the last time the Ironman World Championship will be held outside of Hawaii. For more on the decision, read our interview with DeRue. We’ll be sitting down with DeRue once again in Nice for an update on all things Ironman – check this page mid-week for the full scoop on 2026 plans for the global race series.
7:12 a.m. Monday: Who’s racing at IMWC Nice this year?
For the last five years, there have been five different winners of the men’s Ironman World Championship. Four of those champs are racing this year: Patrick Lange (DEU), Sam Laidlow (FRA), Gustav Iden (NOR), and Kristian Blummenfelt (NOR). Will we see a familiar face atop the podium in 2025, or will a new king topple them all? Anything is possible, especially with a start list featuring the likes of iron-distance record holder Magnus Ditlev (DNK), 2024 third-place finisher Rudy von Berg (USA), and a who’s who of rising triathlon stars.
Hit the button below to see the 56 athletes set to toe the start line this Sunday.
7:12 a.m. Monday: Time for Breakfast with Bob!
Pour yourself a cuppa – Breakfast with Bob is back. In this year’s edition of triathlon’s favorite race-week tradition, Bob Babbitt and a mix of triathlon legends old and new. Hear from American pro Matthew Marquardt about training on a cruise ship (yes, that happened), listen to Kristian Blummenfelt (NOR) say what he really thinks about German Patrick Lange’s win last year, and take a trip down memory lane with Mark Allen – you can stream all the interviews here.
7:03 a.m. Monday: Bonjour! Wish you were here!
It’s race week! Triathlete is on the ground in Nice, France, where we’re already spotting plenty of triathletes on the Nice promenade, decked out for runs in visors and Ironman gear. As the sun rises over the Mediterranean, race crews are hard at work setting up the transition area and expo – exciting times ahead for fans of triathlon!
