Skip to Content

UTMB World Series Events

Select the event you're interested in

Register to discover the race

North America

02 - 04 October 2025

09 - 11 October 2025

22 - 23 November 2025

05 - 07 March 2026

09 - 12 April 2026

23 - 25 April 2026

27 - 28 June 2026

24 - 25 July 2026

14 - 16 August 2026

26 - 28 September 2025

18 - 21 September 2025

Asia

17 - 19 October 2025

17 - 19 October 2025

17 - 19 October 2025

08 - 09 November 2025

14 - 16 November 2025

29 November - 07 December 2025

06 - 08 March 2026

15 - 17 May 2026

26 - 28 September 2025

19 - 22 June 2025

01 - 04 May 2025

11 - 20 April 2025

01 - 02 March 2025

South America

18 - 22 November 2025

18 - 22 March 2026

31 July - 02 August 2026

18 - 21 September 2025

19 - 21 June 2025

Oceania

27 - 29 November 2025

14 - 15 February 2026

14 - 17 May 2026

Africa

29 - 31 May 2026

MY UTMB

Mack ROBERTSON

Nationality

United States of america

Age

35-39 Men

UTMB Index

Index

20K

50K

100K

100M

706

-

685

702

-

Races

date

Race

country

Cat.

Distance /
mt+

Time

Rank

Gender

Score

06.14.2025

RIVER OF NO RETURN ENDURANCE RUNS 2025 - 55KM

50K

54.4 KM
2840 M+

06:05:06

2 / 92

2 / 57

04.13.2025

Gorge Waterfalls 2025 - 100K

100K

98.9 KM
3312 M+

10:01:50

26 / 310

21 / 218

11.09.2024

Run The Rock 2024 - 50K

50K

49.8 KM
1424 M+

04:48:08

12 / 154

10 / 92

06.01.2024

Smith Rock Classic 2024 - Smith Rock Classic 50K

50K

50 KM
1400 M+

04:43:11

5 / 65

5 / 45

04.14.2024

Gorge Waterfalls 2024 - 100K

100K

98.9 KM
3312 M+

10:06:27

9 / 296

7 / 220

06.24.2023

Western States Endurance Run 2023 - Western States 100-Mile Endurance Run

100M

159.9 KM
5610 M+

21:03:30

44 / 328

30 / 260

04.02.2023

Gorge Waterfalls 2023 - 100K

100K

98.9 KM
3312 M+

09:58:59

8 / 208

8 / 156

11.14.2022

Run The Rock 2022 - 50K

50K

49.8 KM
1424 M+

04:37:08

7 / 107

6 / 74

04.02.2022

Gorge Waterfalls 2022 - 100K

100K

98.1 KM
3355 M+

10:07:17

14 / 183

9 / 127

11.13.2021

Run The Rock 2021 - 50 Mile

50K

76.5 KM
2260 M+

07:56:33

8 / 71

7 / 50

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

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

Follow the races live