# IAU 24 Hour World Championship

The IAU 24 Hour World Championship is an international 24-hour run competition organised by the International Association of Ultrarunners (IAU). Since 2015, the World Championship has alternated annually with the IAU 100 km World Championships.
Preceded in 2001 by the IAU World 24 Hours Track Championships, as a track running event, this competition became the IAU World 24 Hours Challenge in 2003. The road running event was later upgraded to World Championships status after 2006. It is one of the IAU's four main world championship events (alongside the 100 km World Championships, 50 km World Championships, and Trail World Championships) and is the only one with a limited time format, rather than a distance-based one.
The competition has often incorporated the IAU 24 Hour European Championships – a continental event which pre-dates the global competition, having first been held in 1992. The annual schedule has twice been broken: first in 2011, with Brugg, Switzerland failing to proceed as host, and again in 2014, with the agreed host (Plzeň, Czech Republic) being unable to hold the eleventh edition of the competition. The event has mainly been held in Europe: in 2006, Taipei became the first Asian city to hold the races and Drummondville, Quebec followed as the first North American host in 2007.
New Championship records were set at the 2019 Championship, including 278.972 kilometres by Aleksandr Sorokin from Lithuania and 270.119 kilometres by Camille Herron from the United States.

## Editions

| Ed. | Year | City | Country | Dates | No. of nations | No. of athletes |
| — | 2001 | San Giovanni Lupatoto | Italy | 22–23 September | | |
| 1st | 2003 | Uden | Netherlands | 11–12 October | | |
| 2nd | 2004 | Brno | Czech Republic | 23–24 October | | |
| 3rd | 2005 | Wörschach | Austria | 16–17 July | | |
| 4th | 2006 | Taipei | Republic of China | 25–26 February | | |
| 5th | 2007 | Drummondville, Quebec | Canada | 28–29 July | | |
| 6th | 2008 | Seoul | South Korea | 18–19 October | | |
| 7th | 2009 | Bergamo | Italy | 2–3 May | | |
| 8th | 2010 | Brive-la-Gaillarde | France | 13–14 May | | |
| — | 2011 | Cancelled | Cancelled | Cancelled | Cancelled | Cancelled |
| 9th | 2012 | Katowice | Poland | 8–9 September | | |
| 10th | 2013 | Steenbergen | Netherlands | 11–12 May | 22 | 261 |
| — | 2014 | Cancelled | Cancelled | Cancelled | Cancelled | Cancelled |
| 11th | 2015 [pl] | Turin | Italy | 11–12 April | 40 | 302 |
| 12th | 2017 [pl] | Belfast | United Kingdom | 1–2 July | | |
| 13th | 2019 [pl] | Albi | France | 26–27 October | | |
| — | 2021 | Cancelled | Cancelled | Cancelled | Cancelled | Cancelled |
| 14th | 2023 [pl] | Taipei | Taiwan | 1–2 December | | |
| 15th | 2025 | Albi | France | 25–26 October | | |

## Medallists
### Men's individual

| Year | Gold | Gold | Silver | Silver | Bronze | Bronze |
| 2001 | Yiannis Kouros (GRE) | 275.828 | Lubomír Hrmo (SVK) | 270.337 | Alain Prual [fr] (FRA) | 259.778 |
| 2003 | Paul Beckers (BEL) | 270.087 | Ryōichi Sekiya (JPN) | 267.223 | Étienne Van Acker (BEL) | 264.967 |
| 2004 | Ryōichi Sekiya (JPN) | 269.085 | Lubomír Hrmo (SVK) | 259.064 | Mohamed Magroun [fr] (FRA) | 257.881 |
| 2005 | Anatoliy Kruglikov [ru] (RUS) | 268.065 | Ewald Eder (AUT) | 263.810 | Jens Lukas (GER) | 256.368 |
| 2006 | Ryōichi Sekiya (JPN) | 272.936 | Mohamed Magroun [fr] (FRA) | 248.563 | Vladimir Bychkov (RUS) | 246.098 |
| 2007 | Ryōichi Sekiya (JPN) | 263.562 | Mohamed Magroun [fr] (FRA) | 257.018 | Masayuki Otaki (JPN) | 253.814 |
| 2008 | Ryōichi Sekiya (JPN) | 273.366 | Fabian Hoblea [fr] (FRA) | 267.174 | Yuji Sakai (JPN) | 264.389 |
| 2009 | Henrik Olsson (SWE) | 257.042 | Ralf Weiss (GER) | 244.492 | Yuji Sakai (JPN) | 242.713 |
| 2010 | Shingo Inoue (JPN) | 273.708 | Scott Jurek (USA) | 266.577 | Ivan Cudin [it] (ITA) | 263.841 |
| 2012 | Michael Morton (USA) | 277.543 CR | Florian Reus [de] (GER) | 261.718 | Ludovic Dilmi (FRA) | 257.819 |
| 2013 | Jon Olsen (USA) | 269.675 | John Dennis (USA) | 262.734 | Florian Reus [de] (GER) | 259.939 |
| 2015 | Florian Reus [de] (GER) | 263.899 | Paweł Szynal (POL) | 261.181 | Robbie Britton (GBR) | 261.140 |
| 2017 [pl] | Yoshihiko Ishikawa (JPN) | 270.870 | Sebastian Białobrzeski (POL) | 267.187 | Johan Steene (SWE) | 266.515 |
| 2019 | Aleksandr Sorokin (LTU) | 278.972 CR | Tamás Bódis (HUN) | 276.222 | Olivier Leblond (USA) | 275.485 |
| 2023 | Aleksandr Sorokin (LTU) | 301.790 | Fotios Zisimopoulos (GRE) | 292.254 | Andrii Tkachuk (UKR) | 284.540 |
| 2025 | | | | | | |

### Men's team

| Year | Gold | Gold | Silver | Silver | Bronze | Bronze |
| 2003 | Belgium | 791.901 CR | Russia | 739.569 | Japan | 729.956 |
| 2004 | France | 745.725 | Japan | 740.396 | Russia | 704.876 |
| 2005 | Japan | 734.498 | Russia | 731.299 | Italy | 725.897 |
| 2006 | Japan | 755.569 | France | 724.412 | Italy | 709.677 |
| 2007 | Japan | 761.842 | France | 742.206 | Germany | 673.092 |
| 2008 | Japan | 785.432 | France | 773.635 | Russia | 723.287 |
| 2009 | Japan | 706.984 | Russia | 693.445 | Germany | 689.111 |
| 2010 | Japan | 778.678 | Italy | 758.932 | United States | 757.468 |
| 2012 | Germany | 759.457 | France | 756.710 | United States | 754.786 |
| 2013 | United States | 780.552 | Japan | 752.567 | Germany | 752.007 |
| 2015 | United Kingdom | 770.777 | Australia | 752.665 | Germany | 745.075 |
| 2017 [pl] | Japan | 783.159 | Poland | 763.630 | United States | 755.458 |
| 2019 [pl] | United States | 799.754 CR | Hungary | 782.241 | France | 779.076 |
| 2023 [pl] | Lithuania | 813.368 | Poland | 787.964 | United Kingdom | 772.127 |
| 2025 | | | | | | |

### Women's individual

| Year | Gold | Gold | Silver | Silver | Bronze | Bronze |
| 2001 | Edit Bérces (HUN) | 235.029 | Irina Reutovich [ru] (RUS) | 226.781 | Irina Koval (RUS) | 222.445 |
| 2003 | Irina Reutovich [ru] (RUS) | 237.052 | Galina Yeremina (RUS) | 232.050 | Joëlle Semur [fr] (FRA) | 227.279 |
| 2004 | Sumie Inagaki (JPN) | 237.154 | Galina Yeremina (RUS) | 235.012 | Stephanie Ehret (USA) | 225.573 |
| 2005 | Lyudmila Kalinina [ru] (RUS) | 242.228 | Galina Yeremina (RUS) | 239.874 | Sumie Inagaki (JPN) | 234.803 |
| 2006 | Sumie Inagaki (JPN) | 237.144 | Lyudmila Kalinina [ru] (RUS) | 231.356 | Kimie Noto (JPN) | 229.146 |
| 2007 | Lyudmila Kalinina [ru] (RUS) | 236.848 | Brigitte Bec (FRA) | 233.137 | Galina Yeremina (RUS) | 230.288 |
| 2008 | Anne-Marie Vernet [fr] (FRA) | 239.685 | Anne-Cécile Fontaine [fr] (FRA) | 239.252 | Brigitte Bec [fr] (FRA) | 229.818 |
| 2009 | Anne-Cécile Fontaine [fr] (FRA) | 243.644 | Brigitte Bec [fr] (FRA) | 234.977 | Monica Casiraghi (ITA) | 223.848 |
| 2010 | Anne-Cécile Fontaine [fr] (FRA) | 239.797 | Monica Casiraghi (ITA) | 231.390 | Julia Alter (GER) | 230.258 |
| 2012 | Michaela Dimitriadu (CZE) | 244.232 | Connie Gardner (USA) | 240.385 | Emily Gelder (GBR) | 238.875 |
| 2013 | Mami Kudo (JPN) | 252.205 | Sabrina Little (USA) | 244.669 | Suzanna Bon (USA) | 236.228 |
| 2015 | Katalin Nagy (USA) | 244.495 | Traci Falbo (USA) | 239.740 | Maria Jansson (SWE) | 238.964 |
| 2017 [pl] | Patrycja Bereznowska (POL) | 259.991 CR WR | Aleksandra Niwińska [pl] (POL) | 251.078 | Katalin Nagy (USA) | 248.970 |
| 2019 [pl] | Camille Herron (USA) | 270.116 CR WR | Nele Alder-Baerens (GER) | 254.288 NR | Patrycja Bereznowska (POL) | 247.723 |
| 2023 [pl] | Miho Nakata (JPN) | 270.363 WR | Olena Shevchenko (UKR) | 254.463 | Patrycja Bereznowska (POL) | 249.541 |
| 2025 | | | | | | |

### Women's team

| Year | Gold | Gold | Silver | Silver | Bronze | Bronze |
| 2003 | Russia | 684.858 | France | 649.303 | Japan | 628.440 |
| 2004 | Russia | 661.558 | Japan | 657.610 | United States | 635.932 |
| 2005 | Russia | 709.573 | Japan | 654.385 | United States | 604.514 |
| 2006 | Russia | 671.477 | Japan | 654.555 | France | 596.172 |
| 2007 | Russia | 671.329 | Japan | 641.207 | France | 614.488 |
| 2008 | France | 708.755 | Japan | 650.257 | Germany | 629.868 |
| 2009 | France | 684.078 | United States | 636.159 | Italy | 626.386 |
| 2010 | France | 685.800 | Italy | 658.112 | Australia | 654.863 |
| 2012 | United States | 694.620 | France | 666.503 | Great Britain | 666.461 |
| 2013 | United States | 710.599 | Japan | 705.582 | France | 670.698 |
| 2015 | United States | 720.046 | Sweden | 684.981 | Poland | 678.468 |
| 2017 [pl] | United States | 740.856 CR | Poland | 740.234 | Germany | 689.622 |
| 2019 [pl] | United States | 746.132 CR | Poland | 721.124 | Germany | 696.846 |
| 2023 [pl] | Poland | 726.552 | Japan | 702.911 | Czech Republic | 697.275 |
| 2025 | | | | | | |