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UTMB World Series Events

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Asia

06 - 08 November 2026

13 - 15 November 2026

27 November - 06 December 2026

10 - 12 December 2026

07 - 10 January 2027

05 - 07 March 2027

09 - 11 April 2027

29 April - 02 May 2027

11 - 13 June 2027

17 - 20 June 2027

04 - 05 September 2027

16 - 18 October 2026

02 - 04 October 2026

11 - 13 September 2026

10 - 12 April 2026

14 - 15 March 2026

North America

13 - 15 November 2026

04 - 06 March 2027

08 - 11 April 2027

22 - 25 April 2027

14 - 16 May 2027

04 - 06 June 2027

25 - 27 June 2027

22 - 24 July 2027

16 - 18 September 2027

23 - 26 September 2027

07 - 10 October 2027

01 - 03 October 2026

14 - 16 August 2026

27 - 28 June 2026

South America

18 - 22 November 2026

31 March - 04 April 2027

24 - 27 June 2027

30 July - 01 August 2027

23 - 26 September 2027

Oceania

26 - 28 November 2026

13 - 14 February 2027

13 - 16 May 2027

Africa

27 - 30 May 2027

MYUTMB

Siem DIEDERIKS

Netherlands

20-34 Men

20K

Unavailable UTMB Index

100K

Unavailable UTMB Index

100M

Unavailable UTMB Index

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Evolution

Result

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Why isn't my result appearing?

2025

January 26

50K

LEENDERBOS ULTRA

LEENDERBOS ULTRA

Cat.

50K

country

Distance

51 KM

85 M+

Time

05:18:41

Rank

49

166

Gender

45

128

UTMB® World Series - Ranking of trail runners by performance level on trail running

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