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UTMB World Series Events

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Oceania

14 - 15 February 2026

14 - 17 May 2026

26 - 28 November 2026

North America

05 - 07 March 2026

09 - 12 April 2026

23 - 25 April 2026

15 - 17 May 2026

27 - 28 June 2026

23 - 25 July 2026

14 - 16 August 2026

17 - 20 September 2026

08 - 11 October 2026

13 - 15 November 2026

02 - 04 October 2025

26 - 28 September 2025

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

10 - 12 December 2026

29 November - 07 December 2025

14 - 16 November 2025

08 - 09 November 2025

17 - 19 October 2025

11 - 20 April 2025

South America

18 - 22 March 2026

26 - 28 June 2026

31 July - 02 August 2026

17 - 20 September 2026

18 - 22 November 2026

Africa

29 - 31 May 2026

MYUTMB

Heather MASTRIANNI

Nationality

United States of America

Age

55-59 Women

UTMB Index

Index

20K

50K

100K

100M

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Races

date

Race

country

Cat.

Distance /
m+

Time

Rank

Gender

Score

04.07.2018

Lake Sonoma 50 2018

100K

75.9 KM
3500 M+

10:31:59

114 / 292

25 / 79

04.26.2013

SALT FLATS 100 2013

100M

161 KM
3200 M+

22:37:17

6 / 37

1 / 4

08.28.2012

SPEEDGOAT 50K 2012

50K

50.5 KM
3700 M+

08:19:05

90 / 237

14 / 50

04.14.2012

Lake Sonoma 50 2012

100K

79.1 KM
3370 M+

09:13:37

59 / 227

12 / 77

12.03.2011

The North Face Endurance Challenge California 2011 - 50M

100K

77 KM
3050 M+

08:53:25

79 / 318

12 / 65

08.07.2010

HEADLANDS HUNDRED 2010 - HEADLANDS HUNDRED 100 MILE ENDURANCE RUN

100M

161 KM
6120 M+

22:25:42

7 / 44

1 / 11

05.01.2010

Miwok 100K 2010

100K

97.8 KM
3300 M+

11:22:37

64 / 268

14 / 86

03.27.2010

Lake Sonoma 50 2010

100K

79.1 KM
3370 M+

09:22:00

24 / 144

5 / 45

03.28.2009

Lake Sonoma 50 2009

100K

79.1 KM
3370 M+

10:49:50

48 / 112

9 / 28

01.01.2009

Miwok 100K 2009

100K

97.8 KM
3300 M+

12:36:26

103 / 260

26 / 74

Statistics

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