The stage is set for a showdown in Nice, France, as the world’s best professional and amateur male triathletes are set to assemble for the men’s 2025 IRONMAN World Championship triathlon on Sunday, September 14, 2025.
This will be the final year that men and women will race separately, in Nice and Kona, at the IRONMAN World Championship.
Returning to its Hawaiian roots with men and women racing together, the IRONMAN World Championship will return to a single-day format in Kona, Hawai`i, when male and female athletes will race on Saturday, October 10, 2026.
For this year’s IRONMAN World Championship men’s event on Sunday, September 14, 2025, the pro list includes former IRONMAN World Champions, past world championship podium finishers, IRONMAN Pro Series contenders, and a host of rising stars all set to toe the line on the Côte d’Azur.
In all, the IRONMAN World Championship will bring together nearly 60 of the world’s top professional male triathletes to compete for the coveted title of IRONMAN World Champion, 6,000 IRONMAN Pro Series points, as well as a piece of the US$375,000 professional prize purse, with the winner taking home US$125,000.
The 2025 men’s start list features four former IRONMAN World Champions, in the shape of Patrick Lange (DEU), Sam Laidlow (FRA), Kristian Blummenfelt (NOR) and Gustav Iden (NOR).
Also returning to the IRONMAN World Championship start line are last year’s podium finishers Magnus Ditlev (DNK) and Rudy Von Berg (USA).
The IRONMAN Pro Series adds another layer of intrigue to the IRONMAN World Championship, with 17 of the top 20 men in the overall standings – including nine of the top 10 – lining up in Nice.
Men’s 2025 IRONMAN World Championship, pro men’s field (subject to change):
| Bib # | First name | Last name | Country represented |
| 1 | Patrick | Lange | Germany (DEU) |
| 2 | Magnus | Ditlev | Denmark (DNK) |
| 3 | Rudy | Von Berg | United States of America (USA) |
| 4 | Léon | Chevalier | France (FRA) |
| 5 | Sam | Laidlow | France (FRA) |
| 6 | Gustav | Iden | Norway (NOR) |
| 7 | Kristian | Blummenfelt | Norway (NOR) |
| 8 | Cameron | Wurf | AUS (Australia) |
| 9 | Kieran | Lindars | United Kingdom (GBR) |
| 10 | Kristian | Høgenhaug | Denmark (DNK) |
| 11 | Matt | Hanson | United States of America (USA) |
| 12 | Bart | Aernouts | Belgium (BEL) |
| 14 | Fernando | Toldi | Brazil (BRA) |
| 15 | Matthew | Marquardt | United States of America (USA) |
| 16 | Finn | Große-freese | Germany (DEU) |
| 17 | Sam | Long | USA (United States of America) |
| 18 | Jan | Stratmann | Germany (DEU) |
| 19 | Mike | Phillips | New Zealand (NZL) |
| 20 | Lucciano | Taccone | Argentina (ARG) |
| 21 | Dylan | Magnien | FRA (France) |
| 22 | Harry | Palmer | United Kingdom (GBR) |
| 23 | Henrik | Goesch | Finland (FIN) |
| 24 | Kacper | Stepniak | Poland (POL) |
| 25 | Marten | Van Riel | Belgium (BEL) |
| 27 | Mathias | Lyngsø Petersen | Denmark (DNK) |
| 28 | Paul | Schuster | Germany (DEU) |
| 29 | Casper | Stornes | Norway (NOR) |
| 30 | Mattia | Ceccarelli | Italy (ITA) |
| 31 | Dominik | Sowieja | Germany (DEU) |
| 32 | Jonas | Hoffmann | Germany (DEU) |
| 33 | Jonas | Schomburg | Germany (DEU) |
| 34 | Nick | Thompson | Australia (AUS) |
| 35 | Trevor | Foley | United States of America (USA) |
| 36 | Jamie | Riddle | South Africa (ZAF) |
| 37 | Andrea | Salvisberg | Switzerland (CHE) |
| 38 | Ben | Hill | Australia (AUS) |
| 39 | Bradley | Weiss | South Africa (ZAF) |
| 40 | Antonio | Benito | Spain (ESP) |
| 41 | Nathan | Guerbeur | France (FRA) |
| 42 | Daniel | Bækkegård | Denmark (DNK) |
| 43 | Jason | West | United States of America (USA) |
| 44 | Benjamin | Zorgnotti | French Polynesia (PYF) |
| 45 | Chris | Leiferman | United States of America (USA) |
| 47 | Jon Saeveras | Breivold | Norway (NOR) |
| 48 | Wilhelm | Hirsch | Germany (DEU) |
| 49 | Federico | Scarabino | Uruguay (URY) |
| 50 | Andreas | Dreitz | Germany (DEU) |
| 51 | Andre | Lopes | Brazil (BRA) |
| 52 | Jordi | Montraveta Moya | Spain (ESP) |
| 53 | Joe | Skipper | United Kingdom (GBR) |
| 54 | Kristian | Grue | Norway (NOR) |
| 55 | Jack | Moody | New Zealand (NZL) |
| 56 | Filipe | Azevedo | Portugal (POR) |
| 57 | Dario | Giovine | Italy (ITA) |
| 58 | Zack | Cooper | United Kingdom (GBR) |
| 59 | Sven | Thalmann | Switzerland (CHE) |
Beginning with the Mediterranean Sea swim, athletes taking part in the Men’s 2025 IRONMAN World Championship triathlon in Nice will enter the water in the Baie des Anges for a 3.8km ROKA swim, following a double rectangular out and back course in the water, before embarking on an imposing bike course.
The 180km ZOOT bike course is technical and challenging, with athletes taking in rooftop villages on the ascent before they cruise down the ‘Route de Thorenc’ and through the ‘Clues de Gréolières”’ on the descent, famous for its stunning feature film backdrop scenery.
The flat, four lap 42.2km HOKA run course will take runners up and down the glitzy Promenade des Anglais, giving them the opportunity to soak up the Mediterranean Sea views and famous Chaises Bleues on one side, and the luxury hotels and casinos on the other, while gaining encouragement from the crowds lining the course.
