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11 - 14 June 2026

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18 - 21 March 2027

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23rd May 2026

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11 - 13 September 2026

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27 - 28 June 2026

23 - 25 July 2026

14 - 16 August 2026

21 - 23 August 2026

10 - 12 September 2026

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01 - 03 October 2026

08 - 11 October 2026

13 - 15 November 2026

08 - 11 April 2027

22 - 25 April 2027

14 - 16 May 2027

16 - 18 April 2026

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26 - 28 November 2026

13 - 14 February 2027

13 - 16 May 2027

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29 - 31 May 2026

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Gerwin DE GROOT

Netherlands

40-44 Men

UTMB Index Race
Unavailable UTMB Index
20K
Unavailable UTMB Index
50K
Unavailable UTMB Index
100K
Unavailable UTMB Index
100M
Unavailable UTMB Index

How does the calculation work?

Evolution

Results

2026

May 17

20K

SONIAN FOREST - 42KM

Marathon Sonian Forest

Cat.

20K

country

Distance

42 KM

680 M+

Time

03:48:11

Rank

18

93

Gender

16

76

2024

March 17

20K

Heuvelland Marathon

Heuvelland Marathon

Cat.

20K

country

Distance

42.2 KM

595 M+

Time

03:14:47

Rank

15

471

Gender

15

351

2019

September 7

50K

27. Jungfrau-Marathon

27. Jungfrau-Marathon

Cat.

50K

country

Distance

42.2 KM

1838 M+

Time

04:24:17

Rank

410

3715

Gender

372

2849

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

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