Events
Race Directors
Malibu, CA
Sean O'Brien 100k/50M/50k
January 31st 2026

2018 Sean O'Brien 100k/50M/50k Race Results (50 Miles )

100 KM 50 Miles 50 KM
Overall
Place		 Division
Place
1
 1 Ruperto Romero
M
50-59
8:14:48
9:53 /mi
2
 2 Barry Kyler
M
40-49
9:07:40
10:57 /mi
5
 1 Kristin Moehl
F
40-49
9:29:42
11:23 /mi
6
 2 Ellen Kenney
F
30-39
9:33:52
11:28 /mi
7
 3 Gisele Schaaf
F
30-39
9:40:35
11:36 /mi
8
 3 Mikael Jackson
M
30-39
9:46:09
11:43 /mi
9
 4 Rhandi Orme
F
30-39
9:48:48
11:46 /mi
10
 5 Yvonne Naughton
F
40-49
9:50:48
11:48 /mi
11
 4 Tyler Garewal
M
20-29
10:04:14
12:05 /mi
12
 5 Sangho Seo
M
50-59
10:04:38
12:05 /mi
13
 6 Leah Yingling
F
20-29
10:06:40
12:08 /mi
14
 6 Giles Healey
M
40-49
10:09:16
12:11 /mi
15
 7 Greg Smith
M
40-49
10:09:46
12:11 /mi
16
 7 Annalise O'Toole
F
20-29
10:10:00
12:12 /mi
17
 8 Emily Grober
F
30-39
10:17:32
12:21 /mi
18
 8 Kevin Deutsche
M
40-49
10:18:39
12:22 /mi
19
 9 Gregory Frye
M
40-49
10:21:20
12:25 /mi
20
 10 Benjamin Cook
M
30-39
10:27:17
12:32 /mi
21
 11 Anthony Zimmitti
M
40-49
10:40:45
12:48 /mi
22
 12 Paul Schwartz
M
40-49
10:53:50
13:04 /mi
23
 13 Richard Butler
M
30-39
10:57:01
13:08 /mi
24
 14 Sean O'Brien
M
50-59
11:03:59
13:16 /mi
25
 15 Mike Rafferty
M
40-49
11:05:04
13:18 /mi
26
 9 Elizabeth Ochoa
F
40-49
11:05:30
13:18 /mi
27
 16 Matthew Mallon
M
30-39
11:09:41
13:23 /mi
28
 17 Matt Springer
M
50-59
11:13:34
13:28 /mi
29
 18 David Cortese
M
40-49
11:13:44
13:28 /mi
30
 19 David Odell
M
50-59
11:24:26
13:41 /mi
31
 10 Robin Derdowski
F
40-49
11:31:44
13:50 /mi
32
 20 David Wiskowski
M
40-49
11:32:20
13:50 /mi
33
 21 Aaron Ball
M
50-59
11:34:10
13:53 /mi
34
 22 Tyler Mathews
M
20-29
11:40:45
14:00 /mi
35
 23 Justin Greene
M
40-49
11:43:40
14:04 /mi
36
 24 John Bagge
M
30-39
11:46:52
14:08 /mi
37
 11 Frances Tennant
F
60-69
11:48:51
14:10 /mi
38
 25 Andrew Merrill
M
30-39
11:51:51
14:14 /mi
39
 26 Tim Campion
M
50-59
12:01:26
14:25 /mi
40
 27 Anthony Snitker
M
20-29
12:01:35
14:25 /mi
41
 28 Rafael Arceo
M
50-59
12:02:39
14:27 /mi
42
 29 Alex Esquivel
M
50-59
12:04:15
14:29 /mi
43
 12 Kristin Petersen Baldrica
F
40-49
12:08:46
14:34 /mi
44
 30 Sean Finegan
M
40-49
12:15:31
14:42 /mi
45
 31 Jason Donnell
M
40-49
12:25:55
14:55 /mi
46
 32 Douglas Donovan
M
40-49
12:27:18
14:56 /mi
47
 13 Tanja Cvekic
F
30-39
12:34:21
15:05 /mi
48
 33 Yasushi Sasaki
M
50-59
12:39:24
15:11 /mi
49
 34 Zheng Liu
M
40-49
12:39:55
15:11 /mi
50
 14 Emily Waters
F
20-29
12:43:48
15:16 /mi
51
 35 Brad Wormer
M
30-39
12:45:10
15:18 /mi
52
 36 Rylan Reynolds
M
30-39
12:46:51
15:20 /mi
53
 37 Nicholas Horton
M
30-39
12:47:31
15:21 /mi
54
 15 Kerri Marchionni
F
30-39
12:49:58
15:23 /mi
55
 38 Kent Dozier
M
40-49
12:55:12
15:30 /mi
56
 16 Megan Storms
F
40-49
12:56:47
15:32 /mi
57
 17 Maria Poso
F
40-49
13:00:56
15:37 /mi
58
 18 Gina Lewis
F
40-49
13:01:33
15:37 /mi
59
 19 Colleen Slick
F
50-59
13:07:28
15:44 /mi
60
 39 Todor Treknov
M
60-69
13:10:06
15:48 /mi
61
 40 Richard Sejkousky
M
50-59
13:11:05
15:49 /mi
62
 20 Vanessa Kline
F
30-39
13:12:33
15:51 /mi
63
 41 John Swanson
M
40-49
13:12:33
15:51 /mi
64
 42 Tony Tuttle
M
60-69
13:15:20
15:54 /mi
65
 43 Steve Gerschultz
M
50-59
13:15:25
15:54 /mi
66
 21 Nicole Wallace
F
<20
13:18:11
15:57 /mi
67
 44 Edouard Bulteau
M
20-29
13:19:34
15:59 /mi
68
 45 Simon Calvet
M
20-29
13:19:34
15:59 /mi
69
 46 Arturo Valdez
M
50-59
13:22:42
16:03 /mi
70
 47 Ryan Gardiner
M
30-39
13:25:21
16:06 /mi
71
 48 Edder Belmonte
M
30-39
13:25:25
16:06 /mi
72
 49 Ritchie Porcayo
M
30-39
13:25:48
16:06 /mi
73
 22 Sandra Orantes
F
40-49
13:26:16
16:07 /mi
74
 23 Jittilak Chaivann
F
40-49
13:26:51
16:08 /mi
75
 50 Alan Singleton
M
50-59
13:27:40
16:09 /mi
76
 51 David Feehrer
M
40-49
13:32:16
16:14 /mi
77
 52 Nicolas Cabeza
M
30-39
13:34:38
16:17 /mi
78
 53 David Lundie
M
30-39
13:39:37
16:23 /mi
79
 54 Tom Afschar
M
40-49
13:43:28
16:28 /mi
80
 55 Brent Vanderhoof
M
40-49
13:45:01
16:30 /mi
81
 56 Steve Sorenson
M
50-59
13:47:12
16:32 /mi
82
 57 Mike Grimm
M
50-59
13:49:57
16:35 /mi
83
 58 Mauricio Palacios
M
30-39
13:50:57
16:37 /mi
84
 24 Leah Beck
F
30-39
13:51:22
16:37 /mi
85
 25 Erin Chavin
F
40-49
13:53:21
16:40 /mi
86
 59 Matt Carroll
M
30-39
13:54:12
16:41 /mi
87
 60 Jacob Wyatt
M
40-49
13:54:31
16:41 /mi
88
 61 Gabe Rubenstein
M
40-49
13:55:37
16:42 /mi
89
 26 Keather Kehoe
F
40-49
14:02:35
16:51 /mi
90
 62 Casey Dahling
M
30-39
14:04:17
16:53 /mi
91
 63 Ronald Ross
M
50-59
14:04:40
16:53 /mi
92
 64 Peter Snow
M
30-39
14:06:34
16:55 /mi
93
 65 Edward Samourjian
M
30-39
14:12:32
17:03 /mi
94
 27 Jess Wacker
F
20-29
14:12:51
17:03 /mi
95
 28 Leigh-Ann Wendling
F
50-59
14:18:58
17:10 /mi
96
 66 Jeffrey Horner
M
40-49
14:19:00
17:10 /mi
97
 29 Kathleen Primozic
F
40-49
14:21:45
17:14 /mi
98
 67 Keith Pronske
M
50-59
14:22:49
17:15 /mi
99
 30 Robin Conlon
F
40-49
14:31:59
17:26 /mi
100
 68 Rony Sanchez
M
30-39
14:39:39
17:35 /mi
101
 31 Angela Tang
F
30-39
14:39:49
17:35 /mi
102
 32 Ellen Fletcher
F
50-59
14:43:58
17:40 /mi
103
 69 John Vanderpot
M
50-59
14:45:39
17:42 /mi
104
 70 Edward Haverly
M
40-49
14:53:01
17:51 /mi
105
 33 Tamara Aarin
F
50-59
15:01:01
18:01 /mi
106
 71 Roger Young
M
50-59
15:13:27
18:16 /mi
107
 72 Jin Taik Chung
M
70+
15:15:11
18:18 /mi
108
 34 Stephanie Fraser
F
20-29
15:21:53
18:26 /mi
109
 73 Khang Le
M
40-49
15:31:30
18:37 /mi
110
 35 Sara Ayers-Rigsby
F
30-39
15:34:54
18:41 /mi
111
 74 David Thomas
M
40-49
15:46:27
18:55 /mi
112
 75 Robert Prestininzi
M
40-49
15:47:57
18:57 /mi

Recent Results

Yakima Skyline Rim
Yakima, WA - 85 finishers
50 KM
Zumbro
Theilman, MN - 198 finishers
100 Miles | 50 Miles | 34 Miles
Serengeti Trail Races
Erda, UT - 37 finishers
50 KM
Zion Ultras and Trail Half Marathon
Virgin, UT - 520 finishers
100 Miles | 100 KM | 60 KM
Flint Hills 50
Manhattan, KS - 21 finishers
50 Miles
Spring SOMO Timed Trail Races
South Orange, NJ - 3 finishers
6 Hours
Forget the PR Mohican 50k and 25k
Loudonville, OH - 141 finishers
50 KM
Desert Rats Trail Running Festival
Fruita, CO - 537 finishers
100 KM | 50 KM
Gunpowder Keg Ultra
Parkton, MD - 40 finishers
50 KM
Rim Runner Trail Races
Sewanee, TN - 26 finishers
100 Miles | 50 Miles
View All Results