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UTMB World Series Events

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North America

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

04 - 06 March 2027

08 - 11 April 2027

22 - 25 April 2027

14 - 16 May 2027

27 - 28 June 2026

South America

31 July - 02 August 2026

17 - 20 September 2026

18 - 22 November 2026

26 - 28 June 2026

20 - 22 March 2026

Asia

11 - 13 September 2026

11 - 13 September 2026

02 - 04 October 2026

16 - 18 October 2026

06 - 08 November 2026

13 - 15 November 2026

27 November - 06 December 2026

10 - 12 December 2026

08 - 10 January 2027

18 - 21 June 2026

12 - 14 June 2026

30 April - 03 May 2026

10 - 12 April 2026

14 - 15 March 2026

06 - 08 March 2026

Oceania

26 - 28 November 2026

13 - 14 February 2027

13 - 16 May 2027

Africa

27 - 30 May 2027

MYUTMB

Ari MAYERFIELD

United States of America

45-49 Men

UTMB Index Race

Unavailable UTMB Index

20K

Unavailable UTMB Index

50K

Unavailable UTMB Index

100K

Unavailable UTMB Index

100M

Unavailable UTMB Index

How does the calculation work?

Evolution

Results

2016

May 1

20K

Half Marathon

TNF Endurance Challenge New York Bear Mountain

Cat.

20K

country

Distance

21.9 KM

730 M+

Time

02:55:03

Rank

471

722

Gender

361

496

2014

May 3

20K

Half Marathon

The North Face Endurance Challenge New York Bear Mountain State Park

Cat.

20K

country

Distance

21 KM

625 M+

Time

03:08:06

Rank

515

678

Gender

413

497

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

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