Gwendolyn Ostrosky (F44)
2026
1 Race | 62 mi.Sean O'Brien 100k/50M/50k
Jan 31st 2026
| Malibu, CA
Distance
100 KM
Overall
31
/ 84
Division (F)
8
/ 19
14:17:28
2021
2 Races | 62 mi.Over The Hill Track Club High Desert 50K
Dec 5th 2021
| Ridgecrest, CA
Distance
50 KM
Overall
17
/ 99
Division (F)
5
/ 29
4:56:32
Tillamook Burn Trail Run
May 2nd 2021
| Timber, OR
Distance
50 KM
Overall
67
/ 149
Division (F)
21
/ 60
6:39:43
2019
1 Race | 62 mi.Zion Ultras and Trail Half Marathon
Apr 12th 2019
| Virgin, UT
Distance
100 KM
Overall
8
/ 257
Division (F)
2
/ 96
11:03:00
2018
1 Race | 62 mi.Black Canyon Ultras
Feb 17th 2018
| Mayer, AZ
Distance
100 KM
Overall
97
/ 353
Division (F)
22
/ 106
13:02:23
2017
3 Races | 133 mi.Ultra Trail de México
Oct 21st 2017
Distance
100 KM
Overall
58
/ 303
Division (F)
6
/ 44
15:49:35
Fat Dog 120
Aug 11th 2017
| Manning Park, BC
Distance
40 Miles
Overall
3
/ 21
Division (F)
1
/ 11
9:34:20
Chuckanut 50k
Mar 18th 2017
| Fairhaven, WA
Distance
50 KM
Overall
217
/ 414
Division (F)
46
/ 134
6:11:45
2016
3 Races | 181 mi.Western States 100
Jun 25th 2016
| Olympic Valley, CA
Distance
100 Miles
Overall
137
/ 280
Division (F)
28
/ 63
27:05:27
Wild Wild West Marathon And Ultra
May 7th 2016
| Lone Pine, CA
Distance
50 KM
Overall
21
/ 78
Division (F)
5
/ 29
6:22:57
Sean O'Brien 100k/50M/50k
Feb 6th 2016
| Malibu, CA
Distance
50 Miles
Overall
30
/ 62
Division (F)
13
/ 26
11:43:19
2015
3 Races | 143 mi.Mt. Hood Trail Runs
Jul 11th 2015
| Timothy Lake, OR
Distance
50 Miles
Overall
44
/ 136
Division (F)
10
/ 53
9:30:34
Bryce Canyon
Jun 5th 2015
| Bryce Canyon, UT
Distance
50 KM
Overall
16
/ 90
Division (F)
6
/ 43
6:20:52
Quicksilver
May 9th 2015
| San Jose, CA
Distance
100 KM
Overall
48
/ 181
Division (F)
8
/ 38
12:31:33
2014
3 Races | 133 mi.Waldo 100K
Aug 16th 2014
| Oakridge, OR
Distance
100 KM
Overall
25
/ 107
Division (F)
5
/ 22
12:55:46
Leona Divide
Apr 26th 2014
| Lake Hughes, CA
Distance
50 KM
Overall
20
/ 170
Division (F)
5
/ 78
5:31:15
Peterson Ridge Rumble
Apr 13th 2014
| Sisters, OR
Distance
40 Miles
Overall
48
/ 135
Division (F)
11
/ 41
6:22:41
2013
3 Races | 112 mi.The North Face Endurance Challenge Calif...
Dec 7th 2013
| Marin, CA
Distance
50 Miles
Overall
149
/ 393
Division (F)
28
/ 89
10:30:14
Leona Divide
Apr 27th 2013
| Lake Hughes, CA
Distance
50 KM
Overall
16
/ 196
Division (F)
2
/ 87
5:30:59
Way Too Cool
Mar 9th 2013
| Cool, CA
Distance
50 KM
Overall
297
/ 853
Division (F)
77
/ 342
5:33:54
2012
2 Races | 81 mi.The North Face Endurance Challenge Calif...
Dec 1st 2012
| Marin, CA
Distance
50 Miles
Overall
147
/ 325
Division (F)
32
/ 78
9:39:12
Shadow of the Giants
Jun 2nd 2012
| Fishcamp, CA
Distance
50 KM
Overall
26
/ 93
Division (F)
8
/ 33
5:24:57
22
Races
13y 8m 6d
Longevity
1,032
Lifetime Miles
Personal Bests
50k
(9)
4:56:32
2021
50m
(4)
9:30:34
2015
100k
(6)
11:03:00
2019
100m
(1)
27:05:27
2016
Distance by Year
2026
62
Miles
1 Race
2021
62
Miles
2 Races
2019
62
Miles
1 Race
2018
62
Miles
1 Race
2017
133
Miles
3 Races
2016
181
Miles
3 Races
2015
143
Miles
3 Races
2014
133
Miles
3 Races
2013
112
Miles
3 Races
2012
81
Miles
2 Races
Multiple Performances
2nd Place
11:03:00
100 KM
2nd Place
5:30:59
50 KM
Achievements are awarded for races with 25 or more finishers and courses with 200 or more finishers.
Masters: 40-49 / Grand Masters: 50-59 / Senior Grand Masters: 60+