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Jeff BROWNING
United States of America
55-59 Men
Jeff Browning (aka Bronco Billy) is a veteran ultra runner and endurance coach. He has competed in some of the world’s hardest and most competitive ultra mountain races over t... Read more
Team
KEEN
Sponsor(s)
KEE, Ultraspire, Injinji, Vespa
Social Media
Evolution
Results
2025
Cat.
country
Distance
162.2 KM
5790 M+
Time
19:12:58
Rank
29
285
Gender
18
210
2024
Cat.
country
Distance
401.4 KM
12236 M+
Time
60:19:57
Rank
2
202
Gender
2
154
2023
September 30
100 Mile
BEAR 100
Cat.
country
Distance
158.1 KM
6220 M+
Time
-
Rank
DNF
Gender
DNF
Cat.
country
Distance
161.8 KM
10365 M+
Time
27:17:02
Rank
6
111
Gender
5
84
Cat.
country
Distance
160.6 KM
5440 M+
Time
19:47:19
Rank
1
180
Gender
1
151
Cat.
country
Distance
203.4 KM
5010 M+
Time
25:29:22
Rank
1
52
Gender
1
35
2022
Cat.
country
Distance
161.8 KM
10365 M+
Time
26:17:43
Rank
5
115
Gender
5
96
Cat.
country
Distance
164.1 KM
6330 M+
Time
20:38:36
Rank
1
23
Gender
1
18
2021
Cat.
country
Distance
162.2 KM
7930 M+
Time
22:35:29
Rank
1
17
Gender
1
14
September 12
100 Mile
Mogollon Monster 100
Cat.
country
Distance
166.6 KM
5280 M+
Time
20:52:07
Rank
1
88
Gender
1
69
Cat.
country
Distance
161.8 KM
10365 M+
Time
26:58:16
Rank
5
112
Gender
5
101
Cat.
country
Distance
161.2 KM
5570 M+
Time
-
Rank
DNF
Gender
DNF
April 10
Zion 100
Zion
Cat.
country
Distance
160.8 KM
2830 M+
Time
17:44:23
Rank
1
160
Gender
1
129
2020
August 1
100km
Tushars Mountain Runs
Cat.
country
Distance
100.1 KM
5250 M+
Time
13:50:42
Rank
4
99
Gender
4
83
2019
September 27
Bear 100 Endurance Trail Race
BEAR 100
Cat.
country
Distance
163 KM
6680 M+
Time
19:06:00
Rank
1
204
Gender
1
160
Cat.
country
Distance
160.7 KM
5360 M+
Time
15:55:06
Rank
9
319
Gender
9
254
Cat.
country
Distance
34.2 KM
1540 M+
Time
03:06:24
Rank
1
145
Gender
1
81
March 22
50K
Antelope Island Buffalo Run
Cat.
country
Distance
50 KM
1500 M+
Time
04:00:41
Rank
1
127
Gender
1
90
Cat.
country
Distance
161.4 KM
4890 M+
Time
16:18:55
Rank
1
97
Gender
1
77
2018
November 3
100 MILES
PINHOTI 100
Cat.
country
Distance
161.9 KM
4930 M+
Time
16:30:35
Rank
1
169
Gender
1
142
September 15
100 Hare
RUN RABBIT RUN
Cat.
country
Distance
169.8 KM
6210 M+
Time
19:51:44
Rank
3
40
Gender
3
29
Cat.
country
Distance
161.8 KM
10365 M+
Time
26:20:21
Rank
1
115
Gender
1
104
Cat.
country
Distance
161.6 KM
5370 M+
Time
16:45:29
Rank
5
299
Gender
5
239
May 19
50M
Silver State 50/50
Cat.
country
Distance
81.7 KM
2820 M+
Time
07:36:03
Rank
2
80
Gender
2
64
Cat.
country
Distance
161 KM
3600 M+
Time
15:58:20
Rank
1
48
Gender
1
37
2017
September 29
BEAR 100
BEAR 100
Cat.
country
Distance
163.4 KM
6380 M+
Time
18:28:48
Rank
1
222
Gender
1
174
September 1
UTMB®
UTMB®
Cat.
country
Distance
171.2 KM
10170 M+
Time
22:55:52
Rank
20
1687
Gender
20
1540
Cat.
country
Distance
161.6 KM
5370 M+
Time
17:32:06
Rank
4
248
Gender
4
202
Cat.
country
Distance
49.1 KM
2760 M+
Time
05:07:11
Rank
1
120
Gender
1
91
February 18
50K
Hagg Lake mud run
Cat.
country
Distance
49.5 KM
1600 M+
Time
03:57:39
Rank
1
113
Gender
1
89
2016
September 16
100 Hare
RUN RABBIT RUN
Cat.
country
Distance
169.8 KM
6210 M+
Time
19:38:48
Rank
4
53
Gender
4
37
Cat.
country
Distance
161.8 KM
10365 M+
Time
25:42:03
Rank
4
112
Gender
4
99
Cat.
country
Distance
160.3 KM
5950 M+
Time
16:30:40
Rank
3
280
Gender
3
217
January 16
HURT 100 MILE ENDURANCE RUN
HURT 100
Cat.
country
Distance
161 KM
8200 M+
Time
21:22:49
Rank
1
53
Gender
1
44
2015
September 25
UTMF
Ultra-Trail Mt. Fuji
Cat.
country
Distance
168.9 KM
7180 M+
Time
22:01:01
Rank
3
564
Gender
3
470
Cat.
country
Distance
97.5 KM
2630 M+
Time
10:37:34
Rank
2
41
Gender
2
35
Cat.
country
Distance
20.6 KM
310 M+
Time
01:25:41
Rank
13
424
Gender
13
226
April 16
100 Miles
Ultra Fiord
Cat.
country
Distance
175.8 KM
5730 M+
Time
24:25:39
Rank
1
10
Gender
1
9
Cat.
country
Distance
100.5 KM
3660 M+
Time
10:26:08
Rank
7
190
Gender
7
139
February 14
HAGG LAKE TRAIL RUNS 50K
HAGG LAKE TRAIL RUNS
Cat.
country
Distance
50 KM
1430 M+
Time
03:51:29
Rank
2
154
Gender
2
116
2014
October 3
Grindstone 100
Grindstone 100
Cat.
country
Distance
160 KM
6990 M+
Time
18:34:40
Rank
1
189
Gender
1
164
September 12
RUN RABBIT RUN 100 HARE
RUN RABBIT RUN
Cat.
country
Distance
165.8 KM
6160 M+
Time
19:06:43
Rank
3
28
Gender
3
22
Cat.
country
Distance
161.8 KM
10365 M+
Time
26:58:00
Rank
4
100
Gender
4
89
June 14
50 Km
SMITH ROCK ASCENT
Cat.
country
Distance
52 KM
1525 M+
Time
04:07:54
Rank
1
87
Gender
1
54
April 4
100 Mile
Zion
Cat.
country
Distance
161 KM
3200 M+
Time
16:49:53
Rank
1
115
Gender
1
82
2013
September 13
RUN RABBIT RUN 100 HARE
RUN RABBIT RUN
Cat.
country
Distance
165.8 KM
6160 M+
Time
18:52:00
Rank
3
28
Gender
3
15
Cat.
country
Distance
80.5 KM
2150 M+
Time
07:16:45
Rank
2
94
Gender
2
80
Cat.
country
Distance
160.9 KM
4790 M+
Time
16:59:24
Rank
1
82
Gender
1
67
Cat.
country
Distance
81 KM
1600 M+
Time
06:36:25
Rank
8
305
Gender
8
237
Cat.
country
Distance
50 KM
2050 M+
Time
03:42:28
Rank
6
281
Gender
6
168
January 12
100 Km
Bandera
Cat.
country
Distance
100 KM
2620 M+
Time
09:37:52
Rank
7
186
Gender
7
128
2012
October 21
SD’S DOWN AND DIRTY HALF
Super Daves
Cat.
country
Distance
21.3 KM
600 M+
Time
01:27:36
Rank
7
146
Gender
6
87
Cat.
country
Distance
161 KM
8215 M+
Time
19:33:30
Rank
1
213
Gender
1
173
Cat.
country
Distance
80.5 KM
2150 M+
Time
07:26:54
Rank
6
68
Gender
6
54
Cat.
country
Distance
160.9 KM
4790 M+
Time
16:38:59
Rank
1
131
Gender
1
107
May 19
50K
Silver State 50/50
Cat.
country
Distance
50 KM
1800 M+
Time
04:17:59
Rank
1
67
Gender
1
46
April 14
Lake Sonoma 50
Lake Sonoma 50
Cat.
country
Distance
79.1 KM
3370 M+
Time
07:40:19
Rank
14
227
Gender
14
150
Cat.
country
Distance
50 KM
2050 M+
Time
03:55:59
Rank
10
211
Gender
10
118
March 17
CHUCKANUT 50K
CHUCKANUT 50K
Cat.
country
Distance
49.5 KM
2000 M+
Time
04:12:52
Rank
25
550
Gender
24
376
February 4
50K
Orcas Island
Cat.
country
Distance
51 KM
2350 M+
Time
04:55:31
Rank
6
171
Gender
6
113
2011
September 24
FLAGLINE FEST 50
FLAGLINE 50K
Cat.
country
Distance
50 KM
1520 M+
Time
04:02:02
Rank
5
93
Gender
5
66
Cat.
country
Distance
158.6 KM
4400 M+
Time
18:27:03
Rank
5
347
Gender
5
292
Cat.
country
Distance
50 KM
1500 M+
Time
04:16:05
Rank
4
193
Gender
4
117
Cat.
country
Distance
20.6 KM
310 M+
Time
01:27:39
Rank
21
688
Gender
16
306
February 5
50K
Orcas Island
Cat.
country
Distance
51 KM
2350 M+
Time
05:13:26
Rank
3
129
Gender
3
91
2010
November 6
LITHIA LOOP MARATHON
LITHIA LOOP MARATHON
Cat.
country
Distance
42.2 KM
1300 M+
Time
03:09:56
Rank
18
171
Gender
18
114
Cat.
country
Distance
161 KM
6700 M+
Time
18:31:09
Rank
1
78
Gender
1
63
Cat.
country
Distance
50 KM
1500 M+
Time
04:10:01
Rank
4
161
Gender
4
102
Cat.
country
Distance
161.3 KM
5500 M+
Time
20:34:09
Rank
3
95
Gender
3
77
Cat.
country
Distance
20.6 KM
310 M+
Time
01:35:46
Rank
61
750
Gender
55
312
May 15
50M
Silver State 50/50
Cat.
country
Distance
81 KM
2800 M+
Time
07:12:59
Rank
1
54
Gender
1
43
Cat.
country
Distance
60 KM
1150 M+
Time
04:39:28
Rank
2
117
Gender
2
84
March 13
WAY TOO COOL
WAY TOO COOL
Cat.
country
Distance
50 KM
2130 M+
Time
04:07:13
Rank
10
472
Gender
10
309
2009
September 19
100M
Virgil Crest Ultras
Cat.
country
Distance
161.6 KM
6100 M+
Time
17:34:00
Rank
1
19
Gender
1
18
Cat.
country
Distance
80.5 KM
2650 M+
Time
07:28:28
Rank
8
166
Gender
8
129
2008
January 1
WALDO 100K
Waldo 100k
Cat.
country
Distance
100 KM
3350 M+
Time
10:36:49
Rank
6
83
Gender
6
66
Cat.
country
Distance
161.3 KM
5500 M+
Time
18:56:28
Rank
1
98
Gender
1
80
2007
February 18
HAGG LAKE TRAIL RUNS
HAGG LAKE TRAIL RUNS
Cat.
country
Distance
50 KM
1430 M+
Time
04:44:56
Rank
7
92
Gender
6
71
January 1
100Mi CC
HARDROCK 100 ENDURANCE RUN
Cat.
country
Distance
161.8 KM
10365 M+
Time
33:18:08
Rank
15
97
Gender
13
86
January 1
WALDO 100K
Waldo 100k
Cat.
country
Distance
100 KM
3350 M+
Time
10:50:35
Rank
2
81
Gender
1
60
2006
Cat.
country
Distance
161.3 KM
5500 M+
Time
20:24:28
Rank
1
78
Gender
1
71
2005
April 30
Miwok 100K
Miwok 100K
Cat.
country
Distance
97.8 KM
3300 M+
Time
09:52:18
Rank
18
223
Gender
16
157
2002
Cat.
country
Distance
161 KM
5510 M+
Time
23:38:07
Rank
79
255
Gender
68
199
May 4
Miwok 100K
Miwok 100K
Cat.
country
Distance
97.8 KM
3300 M+
Time
11:40:16
Rank
45
191
Gender
37
138
