Skip to Content

UTMB World Series Events

Select the event you're interested in

Register to discover the race

Oceania

14 - 15 February 2026

14 - 17 May 2026

26 - 28 November 2026

North America

05 - 07 March 2026

09 - 12 April 2026

23 - 25 April 2026

15 - 17 May 2026

27 - 28 June 2026

23 - 25 July 2026

14 - 16 August 2026

17 - 20 September 2026

01 - 03 October 2026

08 - 11 October 2026

13 - 15 November 2026

26 - 28 September 2025

Asia

06 - 08 March 2026

14 - 15 March 2026

10 - 12 April 2026

30 April - 03 May 2026

12 - 14 June 2026

18 - 21 June 2026

11 - 13 September 2026

11 - 13 September 2026

16 - 18 October 2026

06 - 08 November 2026

10 - 12 December 2026

29 November - 07 December 2025

14 - 16 November 2025

17 - 19 October 2025

South America

18 - 22 March 2026

26 - 28 June 2026

31 July - 02 August 2026

17 - 20 September 2026

18 - 22 November 2026

Africa

29 - 31 May 2026

MYUTMB

Masahiro NATORI

Nationality

Japan

Age

20-34 Men

UTMB Index

Index

20K

50K

100K

100M

597

-

596

553

-

Races

date

Race

country

Cat.

Distance /
m+

Time

Rank

Gender

Score

10.12.2025

Japan Mountain Endurance Race 2025

100K

71.5 KM
4800 M+

13:10:40

171 / 1269

157 / 1118

03.30.2025

HASETSUNE 30K 2025

50K

30 KM
2000 M+

04:17:37

146 / 1179

138 / 1067

10.13.2024

Japan Mountain Endurance Race 2024

100K

71.5 KM
4800 M+

-

DNF

DNF

05.18.2024

Trainic-World 100mile & 100km in Sainokuni 2024 - 100MILE RELAY_1

50K

55 KM
3550 M+

07:46:52

6 / 23

5 / 20

03.31.2024

HASETSUNE 30K 2024

50K

30 KM
2000 M+

-

DNF

DNF

10.08.2023

Hasetsune Cup 2023 - HASETSUNE CUP

100K

67 KM
4190 M+

-

DNF

DNF

06.10.2023

Okushinano100 2023 - 100K

100K

100.8 KM
4680 M+

13:59:40

45 / 579

40 / 497

05.13.2023

Mt. Hiei International Trail Run 2023 - 50mile

100K

75.6 KM
6180 M+

-

DNF

DNF

11.19.2022

FTR Chichibu＆ Okumusashi 2022 - 100k

100K

106.2 KM
5790 M+

16:35:44

10 / 514

10 / 452

10.09.2022

Hasetsune Cup 2022

100K

62.6 KM
4241 M+

08:23:24

10 / 1285

10 / 1126

Statistics

Filter by UTMB INDEX

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

Join us

Sponsorship

Race Organisers

Jobs

Stay in Touch

FAQ and Help

Contact Us

Follow us

Terms & conditions

Privacy Policy

Cookies preferences

©2024 UTMB® all rights reserved. Ultra-Trail® and UTMB® are registered trademarks..