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UTMB World Series Events

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North America

09 - 12 April 2026

16 - 18 April 2026

23 - 26 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

Asia

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

13 - 15 November 2026

28 November - 06 December 2026

10 - 12 December 2026

14 - 15 March 2026

06 - 08 March 2026

Oceania

14 - 17 May 2026

26 - 28 November 2026

13 - 14 February 2027

Africa

29 - 31 May 2026

South America

26 - 28 June 2026

31 July - 02 August 2026

17 - 20 September 2026

18 - 22 November 2026

20 - 22 March 2026

MYUTMB

Rebecca GREBOSKY

Nationality

United States of America

Age

55-59 Women

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UTMB Index

Index

20K

50K

100K

100M

395

-

386

-

394

Races

date

Race

country

Cat.

Distance /
m+

Time

Rank

Gender

Score

06.28.2025

Western States® 100-Mile Endurance Run 2025 - Western States 100-Mile Endurance Run

100M

162.2 KM
5790 M+

-

DNF

DNF

10.27.2024

Javelina Jundred 2024 - 100 Miles

100M

159.2 KM
1810 M+

28:26:22

365 / 421

134 / 164

09.28.2024

Ultra Trail Whistler by UTMB 2024 - 50K

50K

47 KM
2600 M+

10:47:17

213 / 230

54 / 66

04.13.2024

Desert RATS Trail Running Festival by UTMB 2024 - 50K

50K

48 KM
1268 M+

08:51:46

353 / 383

107 / 122

09.24.2023

Sawatch ascent 50k 2023 - 50k

50K

53.1 KM
2135 M+

10:31:55

116 / 121

48 / 51

09.23.2023

West line winder 2023 - 50k

50K

49.3 KM
1350 M+

07:48:25

103 / 132

50 / 70

06.19.2023

The Broken Arrow Skyrace 2023 - 23K

20K

21.7 KM
1440 M+

04:01:51

500 / 651

176 / 271

04.29.2023

The Canyons Endurance Runs by UTMB® 2023 - 100 Km

100K

101.4 KM
5095 M+

-

DNF

DNF

11.06.2022

Rim to River 100 2022

100M

159.8 KM
3246 M+

31:56:34

142 / 143

44 / 45

07.10.2022

SISKIYOU OUT BACK TRAIL RUN 2022 - 50K

50K

48.1 KM
1470 M+

06:39:18

88 / 166

25 / 62

Statistics

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

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