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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

Britton RIEHM

Nationality

United States of America

Age

50-54 Men

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UTMB Index

Index

20K

50K

100K

100M

509

507

426

-

-

Races

date

Race

country

Cat.

Distance /
mt+

Time

Rank

Gender

Score

03.08.2025

Vietnam Ultra Marathon 2025 - Ultra 55km

50K

54.8 KM
2000 M+

09:08:27

33 / 202

25 / 155

01.11.2025

Vietnam Trail Marathon 2025 - 42km

50K

42 KM
1820 M+

05:57:27

34 / 486

26 / 274

11.30.2024

Vietnam Mountain Marathon 2024 - 21KM

20K

23 KM
1150 M+

03:02:29

22 / 1088

16 / 560

10.19.2024

Vietnam Jungle Marathon 2024 - 25 km

20K

24.5 KM
1010 M+

03:16:50

14 / 457

12 / 218

01.20.2024

Vietnam Trail Marathon 2024 - 21km

20K

21.2 KM
940 M+

03:15:56

46 / 1391

35 / 644

10.21.2023

Vietnam Jungle Marathon 2023 - 25 km

20K

24.5 KM
1010 M+

02:55:01

5 / 487

4 / 242

09.23.2023

Vietnam Mountain Marathon 2023 - 21KM

20K

21.3 KM
1100 M+

03:08:30

20 / 1210

15 / 629

01.07.2023

Vietnam Trail Marathon 2023 - 21km

20K

21.2 KM
940 M+

02:41:55

23 / 1106

20 / 513

10.15.2022

Vietnam Jungle Marathon 2022 - 25 km

20K

23.7 KM
1130 M+

03:54:48

24 / 521

17 / 262

09.10.2022

Vietnam Mountain Marathon 2022 - 21Km

20K

20.7 KM
960 M+

03:58:14

45 / 1280

38 / 639

Statistics

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

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