# IAU 50 km World Championships

The IAU 50 km World Championships is an annual, global ultrarunning competition over 50 kilometres organized by the International Association of Ultrarunners (IAU).
The competition began life as the IAU 50 km World Trophy in 2005. It served as the final leg of the IAU 50 km Challenge circuit, with runners gaining qualification through performances on one of the nine preceding qualifying races. The winners of the men's and women's trophy were decided by the best aggregate time of their World Trophy race plus their best time from the qualifying round. The race moved away from aggregate scoring, with the World Trophy race becoming a straight final, and it continued in this format up to 2014. The 2008 and 2013 editions were cancelled due to the number of world championships the IAU was already organised that year.
The inaugural World Championship event took place in Doha, Qatar in December 2015. This included men's and women's races with individual and team elements. The team titles were decided by the three best combined times set by a nation's runners at the competition. For 2014 to 2017 it was agreed that the competition would be hosted in Doha for those years, moving the competition away from its tradition of changing host each year. The competition signalled commitment to the sport in Qatar, with Doha hosting its first ultramarathon in the months preceding the 2014 championship.
It is one of four world championships organised by the IAU, with the others being the IAU 100 km World Championships, IAU 24 Hour World Championship and the IAU Trail Running World Championships.
The inaugural edition in 2005 incorporated a European Championship race. Oleg Kharitonov was the men's winner, with World Trophy winner Sandor Barcza as runner-up and Stefano Sartori in third. The European Championship and World Trophy places matched on the women's side, with Heather Foundling-Hawker winner of both. The European Championship was abandoned after the launch of the World Championships. It had only been held twice (Mario Ardemagni and Danielle Sanderson were the 2004 winners).

## Editions

| Edition | Year | City | Country | Date | No. of athletes | No. of nations |
| 01st | 2005 | Palermo | Italy | 16 October | | |
| 02nd | 2006 | Winschoten | Netherlands | 16 September | | |
| 03rd | 2007 | Palermo | Italy | 14 October | | |
| 04th | 2008 | — | — | — | — | — |
| 05th | 2009 | Gibraltar | United Kingdom | 31 October | | |
| 06th | 2010 | Galway | Ireland | 29 August | | |
| 07th | 2011 | Assen | Netherlands | 20 August | | |
| 08th | 2012 | Vallecrosia | Italy | 20 October | | |
| 09th | 2013 | — | — | — | — | — |
| 010th | 2014 | Doha | Qatar | 31 October | | |
| 01st | 2015 | Doha | Qatar | 4 December | | |
| 02nd | 2016 | Doha | Qatar | 11 November | | |
| 03rd | 2017 | | canceled | | | |
| 04th | 2018 | | cancelled | | | |
| 05th | 2019 | Brașov | Romania | 1 September | 73 | |
| 06th | 2020 | Aqaba | Jordan | 27 November | | |
| 07th | 2021 | Taipei | Taiwan | 31 October | | |
| 08th | 2023 | Hyderabad | India | 5 November | 77 | 17 |

## Medal summary
### Men

| Year | Gold | Gold | Silver | Silver | Bronze | Bronze |
| 2005 | Sandor Barcza (FRA) | 6:05:33 | Oleg Kharitonov (RUS) | 6:15:40 | Aleksandr Boltachev (RUS) | 6:21:56 |
| 2006 | Dimitry Bula (BLR) | 3:06:52 | Dominic Croft (GBR) | 3:08:25 | Rod Harris (GBR) | 3:09:02 |
| 2007 | Marc Papanikitas (BEL) | 3:06:36 | Julian Rendall (GBR) | 3:09:39 | Bernard Santner (AUT) | 3:12:44 |
| 2009 | Lucas Nonyana (RSA) | 2:58:03 | Paul Molyneux (GBR) | 3:00:15 | Michael Wardian (USA) | 3:00:56 |
| 2010 | Collen Makaza (ZIM) | 2:47:22 | Sandile Ngunuza (RSA) | 2:53:06 | Michael Wardian (USA) | 2:54:57 |
| 2011 | Eliot Kiplagat Biwott (KEN) | 2:54:53 | Pieter Vermeesch (BEL) | 2:57:23 | Kaito Iwayama (JPN) | 2:59:12 |
| 2012 | Steven Way (GBR) | 2:53:41 | Collen Makaza (ZIM) | 2:57:49 | Paul Martelletti (GBR) | 2:58:18 |
| 2014 | Collen Makaza (ZIM) | 3:00:41 | Phil Anthony (GBR) | 3:01:26 | Harm Sengers (NED) | 3:05:01 |
| 2015 | Tony Migliozzi (USA) | 2:52:08 | Arnold Kiptaoi (KEN) | 2:55:34 | Samuel Ongaki (KEN) | 2:56:15 |
| 2016 | Tony Migliozzi (USA) | 2:54:02 | Tyler Andrews (USA) | 2:56:04 | Collen Makaza (ZIM) | 2:56:58 |
| 2017 | Not held | Not held | Not held | Not held | Not held | Not held |
| 2018 | Not held | Not held | Not held | Not held | Not held | Not held |
| 2019 | Iraitz Arrospide (ESP) | 2:47:42 | Lungile Gongqa (RSA) | 2:48:26 | Daniel Nash (GBR) | 2:49:01 |

### Women

| Year | Gold | Gold | Silver | Silver | Bronze | Bronze |
| 2005 | Heather Foundling-Hawker (GBR) | 7:20:46 | Monica Casiraghi (ITA) | 7:32:45 | Lorena Di Vito (ITA) | 7:35:14 |
| 2006 | Zelah Morrall (GBR) | 3:31:19 | Sarah Tucker (GBR) | 3:32:08 | Fiona Davies (GBR) | 3:35:15 |
| 2007 | Monica Carlin (ITA) | 3:32:17 | June Petrie (AUS) | 3:35:38 | Sabine Hofer (AUT) | 3:36:07 |
| 2009 | Kami Semick (USA) | 3:29:48 | Monica Carlin (ITA) | 3:37:10 | Lesley Train-Austin (RSA) | 3:38:23 |
| 2010 | Susan Harrison (GBR) | 3:15:43 | Mary Coordt (USA) | 3:28:31 | Irene Kalter (NED) | 3:34:22 |
| 2011 | Emma Gooderham (GBR) | 3:17:30 | Susan Harrison (GBR) | 3:25:05 | Joasia Zakrzewski (GBR) | 3:26:37 |
| 2012 | Helen Taranowski (GBR) | 3:30:43 | Emma Gooderham (GBR) | 3:33:32 | Michele Chiefari (ITA) | 3:37:45 |
| 2014 | Emily Harrison (USA) | 3:32:30 | Joanna Zakrzewski (GBR) | 3:33:23 | Catrin Jones (CAN) | 3:37:57 |
| 2015 | Camille Herron (USA) | 3:20:59 | Marija Vrajić (CRO) | 3:28:15 | Catrin Jones (CAN) | 3:28:19 |
| 2016 | Risper Kimaiyo (KEN) | 3:22:45 | Nele Alder-Baerens (GER) | 3:25:53 | Amy Clements (GBR) | 3:26:17 |
| 2017 | Not held | Not held | Not held | Not held | Not held | Not held |
| 2018 | Not held | Not held | Not held | Not held | Not held | Not held |
| 2019 | Alyson Dixon (GBR) | 3:07:20 | Helen Davies (GBR) | 3:09:16 | Alicia Pérez (ESP) | 3:15:09 |

### Men's team

| Year | Gold | Gold | Silver | Silver | Bronze | Bronze |
| 2015 | Kenya (KEN) | 8:49:09 | United States (USA) | 8:57:52 | Australia (AUS) | 9:37:51 |
| 2016 | United States (USA) | 8:56:37 | Great Britain (GBR) | 8:59:29 | Germany (GER) | 9:45:58 |
| 2017 | Not held | Not held | Not held | Not held | Not held | Not held |
| 2018 | Not held | Not held | Not held | Not held | Not held | Not held |
| 2019 | South Africa (RSA) | 8:28:38 | Germany (GER) | 8:35:52 | Great Britain (GBR) | 8:41:00 |

### Women's team

| Year | Gold | Gold | Silver | Silver | Bronze | Bronze |
| 2015 | Croatia (CRO) | 10:50:08 | Canada (CAN) | 11:10:41 | Australia (AUS) | 11:31:40 |
| 2016 | Great Britain (GBR) | 10:36:01 | United States (USA) | 10:40:00 | Croatia (CRO) | 11:26:36 |
| 2017 | Not held | Not held | Not held | Not held | Not held | Not held |
| 2018 | Not held | Not held | Not held | Not held | Not held | Not held |
| 2019 | Great Britain (GBR) | 9:39:33 | United States (USA) | 10:03:18 | Austria (AUT) | 10:19:58 |