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UTMB World Series Events

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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

Isaac BOSTROM

Nationality

United States of America

Age

20-34 Men

UTMB Index

Index

20K

50K

100K

100M

552

-

554

-

-

Races

date

Race

country

Cat.

Distance /
m+

Time

Rank

Gender

Score

09.14.2025

The Rut Mountain Runs 2025 - 50k

50K

50 KM
3200 M+

07:49:45

72 / 523

58 / 358

09.16.2024

The Rut Mountain Runs 2024 - 50k

50K

50 KM
3200 M+

08:29:41

176 / 545

135 / 357

09.05.2022

The Rut Mountain Runs 2022 - 50k

50K

50 KM
3200 M+

08:03:54

79 / 485

62 / 332

10.03.2020

Rock-Creek Stumpjump 2020 - 50K

50K

50 KM
1850 M+

06:15:38

17 / 224

17 / 167

09.01.2018

RUN THE RUT 2018 - 28K

20K

28.4 KM
2105 M+

05:06:29

94 / 518

80 / 296

Statistics

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

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