The IAU 100 km World Championships have been held annually since 1987, at different locations, and is organized by the International Association of Ultrarunners (IAU).^[1][2] Due to lack of sponsorship, the 2013 event, planned for Jeju Island, South Korea,^[3] was cancelled and the 2014 event, originally due to be held at Daugavpils, Latvia, was held instead in Doha, Qatar.

The championships from 2007 to 2012 incorporated the IAU 100 km European Championships.^[4]

#	Year	Location	Gold	Silver	Bronze
1st	1987	Torhout	Domingo Catalán	Don Ritchie	Roland Vuillemenot
2nd	1988	Santander	Domingo Catalán	Jean-Marc Bellocq	Bruno Scelsi
3rd	1989	Rambouillet	Bruno Scelsi	Bruno Joppen	Herbert Cuntz
4th	1990	Duluth	Roland Vuillemenot	Russell Prince	Stefan Fekner
5th	1991	Faenza	Valmir Nunes	Roland Vuillemenot	Jean-Marc Bellocq
6th	1992	Palamós	Konstantin Santalov	Domingo Catalán	Erik Seedhouse
7th	1993	Torhout	Konstantin Santalov	Peter Hermanns	Cornet Mantonane
8th	1994	Saroma	Aleksey Volgin	Jarosław Janicki	Kazimierz Bak
9th	1995	Winschoten	Valmir Nunes	Aleksey Volgin	Tom Johnson
10th	1996	Moscow	Konstantin Santalov	Jarosław Janicki	Aleksey Kruglikov
11th	1997	Winschoten	Sergey Yanenko	Mikhail Kokorev	Andrzej Magier
12th	1998	Shimanto	Grigoriy Murzin	Igor Tyupin	Ravil Kashapov
13th	1999	Chavagnes-en-Paillers	Simon Pride	Thierry Guichard	Takahiro Sunada
14th	2000	Winschoten	Pascal Fétizon	Dmitriy Radyuchenko	Oleg Kharitonov
15th	2001	Cléder	Yasufumi Mikami	Rich Hanna	Pascal Fétizon
16th	2002	Torhout	Mario Fattore	Igor Tyazhkorob	Fermín Martínez
17th	2003	Tainan	Mario Fattore	Grigoriy Murzin	Michael Sommer
18th	2004	Winschoten	Mario Ardemagni	Jarosław Janicki	Oleg Kharitonov
19th	2005	Saroma	Grigoriy Murzin	Jorge Aubeso	Tsutomu Sassa
20th	2006	Misari	Yannick Djouadi	Oleg Kharitonov	Denis Zhalybin
21st	2007	Winschoten	Shinichi Watanabe	Kenji Nakanishi	Oleg Kharitonov
22nd	2008	Rome	Giorgio Calcaterra	Jarosław Janicki	Miguel Ángel Jiménez
23rd	2009	Torhout	Yasukazu Miyazato	Jonas Buud	Giorgio Calcaterra
24th[5]	2010	Gibraltar	Shinji Nakadai	Jonas Buud	Michael Wardian
25th[6]	2011	Winschoten	Giorgio Calcaterra	Michael Wardian	Andrew Henshaw
26th[7]	2012	Seregno	Giorgio Calcaterra	Jonas Buud	Alberico Di Cecco
	2013	cancelled
27th	2014	Doha	Max King	Jonas Buud	José Antonio Requejo
28th	2015	Winschoten	Jonas Buud	Asier Cuevas	Giorgio Calcaterra
29th	2016	Los Alcázares	Hideaki Yamauchi	Bongmusa Mthembu	Patrick Reagan
	2017	cancelled
30th[8]	2018	Sveti Martin na Muri	Hideaki Yamauchi	Takehiko Gyoba	Bongmusa Mthembu
	2019–2021	cancelled
31st[9]	2022	Bernau bei Berlin	Haruki Okayama	Jumpei Yamaguchi	Piet Wiersma

#	Year	Location	Gold	Silver	Bronze
1st	1987	Torhout	Agnes Eberle	Monique Exbrayat	Marie-France Plas
2nd	1988	Santander	Ann Trason	Márta Vass	Eleanor Adams
3rd	1989	Rambouillet	Katherina Janicke	Sigrid Lomsky	Hilary Walker
4th	1990	Duluth	Eleanor Adams	Ann Trason	Márta Vass
5th	1991	Faenza	Eleanor Adams	Nadezhda Gumerova	Márta Vass
6th	1992	Palamós	Nurzia Bagmanova	Márta Vass	Carolyn Hunter-Rowe
7th	1993	Torhout	Carolyn Hunter-Rowe	Valentina Shatyeyeva	Valentina Lyakhova
8th	1994	Saroma	Valentina Shatyeyeva	Trudi Thomson	Irina Petrova
9th	1995	Winschoten	Ann Trason	Helene Joubert	Maria Bak
10th	1996	Moscow	Valentina Shatyeyeva	Linda Meadows	Yelena Sidorenkova
11th	1997	Winschoten	Valentina Lyakhova	Isabelle Olive	Andrzej Magier
12th	1998	Shimanto	Carolyn Hunter-Rowe	Lilac Flay	Maria Venâncio
13th	1999	Chavagnes-en-Paillers	Anna Balosáková	Martine Cubizolles	Oksana Ladyshina
14th	2000	Winschoten	Edit Bérces	Yelvira Kolpakova	Constanze Wagner
15th	2001	Cléder	Yelvira Kolpakova	Marina Bychkova	Monica Casiraghi
16th	2002	Torhout	Tatyana Zhyrkova	Akiko Sekiya	Monica Casiraghi
17th	2003	Tainan	Monica Casiraghi	Paola Sanna	Elke Hiebl
18th	2004	Winschoten	Tatyana Zhyrkova	Marina Bichkova	Monica Casiraghi
19th	2005	Saroma	Hiroko Sho	Anne Riddle-Lundblad	Yoko Yamazawa
20th	2006	Misari	Elizabeth Hawker	Monica Carlin	Hiroko Sho
21st	2007	Winschoten	Norimi Sakurai	Laurence Fricotteau	Hiroko Sho
22nd	2008	Rome	Tatyana Zhirkova	Kami Semick	Monica Carlin
23rd	2009	Torhout	Kami Semick	Irina Vishnevskaya	Monica Caelin
24th[5]	2010	Gibraltar	Ellie Greenwood	Monica Carlin	Lizzy Hawker
25th[6]	2011	Winschoten	Marina Bychkova	Joasia Zakrzewski	Lindsay van Aswegen
26th[7]	2012	Seregno	Amy Sproston	Kajsa Berg	Irina Vishnevskaya
	2013	cancelled
27th	2014	Doha	Ellie Greenwood	Chiyuki Mochizuki	Joasia Zakrzewski
28th	2015	Winschoten	Camille Herron	Kajsa Berg	Marija Vrajić
29th	2016	Los Alcázares	Kirstin Bull	Nikolina Sustic	Joasia Zakrzewski
	2017	cancelled
30th[8]	2018	Sveti Martin na Muri	Nikolina Šustić	Nele Alder-Baerens	Mai Fujisawa
	2019–2021	cancelled
31st[10]	2022	Bernau bei Berlin	Floriane Hot	Camille Chaigneau	Caitriona Jennings

Rank	Nation	Gold	Silver	Bronze	Total
1	Russia	6	7	6	19
2	Japan	6	2	2	10
3	Italy	6	0	3	9
4	France	4	3	4	11
5	Spain	2	3	3	8
6	Brazil	2	0	0	2
7	Sweden	1	4	0	5
8	United States	1	2	3	6
9	Great Britain	1	1	1	3
10	Ukraine	1	0	0	1
11	Poland	0	4	1	5
12	South Africa	0	1	1	2
13	Belgium	0	1	0	1
	Netherlands	0	1	0	1
	New Zealand	0	1	0	1
16	Germany	0	0	3	3
17	Canada	0	0	1	1
Totals (17 entries)		30	30	28	88

Rank	Nation	Gold	Silver	Bronze	Total
1	Russia	9	5	5	19
2	Great Britain	7	2	5	14
3	United States	5	3	1	9
4	Japan	2	2	4	8
5	Italy	1	3	5	9
6	Germany	1	2	3	6
7	Hungary	1	2	2	5
8	Croatia	1	1	1	3
9	Slovakia	1	1	0	2
10	Switzerland	1	0	0	1
11	France	0	4	1	5
12	Sweden	0	2	0	2
13	South Africa	0	1	1	2
14	Australia	0	1	0	1
	New Zealand	0	1	0	1
16	Brazil	0	0	1	1
	Poland	0	0	1	1
Totals (17 entries)		29	30	30	89

• Ultramarathon
• International Association of Ultrarunners
• IAU 50 km World Championships

• IAU official site
• IAAF reports: 2010, 2011, 2012