Skip to Content

UTMB World Series Events

Select the event you're interested in

Register to discover the race

Africa

22 - 23 June 2024

22 - 25 May 2025

North America

29th June 2024

19 - 20 July 2024

20 - 22 September 2024

28 - 29 September 2024

11 - 12 October 2024

07 - 09 November 2024

11 - 13 April 2025

25 - 26 April 2025

South America

02 - 04 August 2024

19 - 22 September 2024

09 - 12 May 2024

Asia

12 - 13 October 2024

17 - 20 October 2024

08 - 10 November 2024

15 - 17 November 2024

05 - 08 December 2024

03 - 05 May 2024

19 - 21 April 2024

Oceania

28 - 30 November 2024

15 - 16 February 2025

15 - 18 May 2025

MY UTMB

Jennifer ZAKROFF

Nationality

United States

Age

50-54 Women

UTMB Index

Index

20K

50K

100K

100M

-

-

-

-

-

Races

date

Race

country

Cat.

Distance /
mt+

Time

Rank

Gender

Score

11.30.2019

QUAD DIPSEA 2019

50K

45.7 KM
2800 M+

-

DNF

DNF

11.02.2019

Canyon X Half Marathon 2019 - 21km

20K

21 KM
720 M+

03:33:58

109 / 163

64 / 111

04.06.2019

AMERICAN RIVER 50 2019 - 50 Mile

100K

80.8 KM
2120 M+

13:49:09

346 / 363

119 / 130

03.09.2019

Marin Ultra Challenge 2019 - 50 Km

50K

51.2 KM
1980 M+

08:43:23

224 / 239

92 / 102

12.08.2018

Rodeo Beach 2018 - 30K

20K

29.7 KM
1140 M+

05:06:24

63 / 68

35 / 38

05.21.2017

OHLONE WILDERNESS RUN 50K 2017 - 50K

50K

49.9 KM
2380 M+

09:28:25

103 / 128

23 / 33

04.08.2017

Lake Sonoma 50 2017

100K

75.9 KM
3500 M+

12:43:56

237 / 300

59 / 86

03.12.2017

Marin Ultra Challenge 2017 - 50 Km

50K

51 KM
2170 M+

07:46:39

176 / 194

68 / 77

02.18.2017

Chabot Trail Run 2017 - CHABOT TRAIL RUN 50KM

50K

50.5 KM
1280 M+

07:21:20

35 / 41

7 / 8

12.04.2016

The North Face Endurance Challenge California 2016 - Half Marathon

20K

21.9 KM
820 M+

02:39:36

572 / 909

227 / 427

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..