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UTMB World Series Events

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Asia

08 - 09 November 2025

14 - 16 November 2025

29 November - 07 December 2025

06 - 08 March 2026

30 April - 03 May 2026

15 - 17 May 2026

18 - 21 June 2026

11 - 13 September 2026

10 - 12 December 2026

17 - 19 October 2025

17 - 19 October 2025

17 - 19 October 2025

11 - 20 April 2025

01 - 02 March 2025

South America

18 - 22 November 2025

18 - 22 March 2026

26 - 28 June 2026

31 July - 02 August 2026

18 - 21 September 2025

North America

21 - 23 November 2025

05 - 07 March 2026

09 - 12 April 2026

23 - 25 April 2026

27 - 28 June 2026

23 - 25 July 2026

14 - 16 August 2026

17 - 20 September 2026

08 - 11 October 2026

02 - 04 October 2025

26 - 28 September 2025

Oceania

27 - 29 November 2025

14 - 15 February 2026

14 - 17 May 2026

Africa

29 - 31 May 2026

MY UTMB

Naoki AMBUTSU

Nationality

Japan

Age

20-34 Men

UTMB Index

Index

20K

50K

100K

100M

596

-

505

598

-

Races

date

Race

country

Cat.

Distance /
mt+

Time

Rank

Gender

Score

10.12.2025

Japan Mountain Endurance Race 2025

100K

71.5 KM
4800 M+

11:06:09

57 / 1269

53 / 1118

03.30.2025

HASETSUNE 30K 2025

50K

30 KM
2000 M+

04:41:08

255 / 1179

240 / 1067

Statistics

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

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