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UTMB World Series Events

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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

02 - 04 October 2026

16 - 18 October 2026

06 - 08 November 2026

10 - 12 December 2026

29 November - 07 December 2025

14 - 16 November 2025

South America

18 - 22 March 2026

26 - 28 June 2026

31 July - 02 August 2026

17 - 20 September 2026

18 - 22 November 2026

North America

09 - 12 April 2026

16 - 18 April 2026

23 - 25 April 2026

15 - 17 May 2026

27 - 28 June 2026

23 - 25 July 2026

14 - 16 August 2026

21 - 23 August 2026

10 - 12 September 2026

17 - 20 September 2026

01 - 03 October 2026

08 - 11 October 2026

13 - 15 November 2026

Oceania

14 - 17 May 2026

26 - 28 November 2026

13 - 14 February 2027

Africa

29 - 31 May 2026

MYUTMB

Brian BUTTERFIELD

Nationality

United States of America

Age

45-49 Men

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UTMB Index

Index

20K

50K

100K

100M

523

-

-

-

525

Races

date

Race

country

Cat.

Distance /
m+

Time

Rank

Gender

Score

10.12.2025

Midstate Massive Ultra Trail 2025

100M

161.7 KM
4150 M+

24:48:26

10 / 75

9 / 61

10.10.2020

Midstate Massive Ultra Trail 2020

100M

163.6 KM
3720 M+

22:02:49

4 / 47

4 / 36

10.20.2018

GHOST TRAIN RAIL TRAIL RACE 100 2018 - 100 Mi

100M

161 KM
1610 M+

16:41:02

2 / 76

2 / 47

10.21.2017

GHOST TRAIN RAIL TRAIL RACE 100 2017 - 100 Mi

100M

161 KM
1610 M+

17:32:32

7 / 65

6 / 43

Statistics

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

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