Greg Rosenberg (M42)

2026

2 Races | 150 mi.
Duration
Backyard
Overall
12 / 61
Division (M)
11 / 50
100.008

Potawatomi

Apr 10th 2026
| Pekin, IL
Distance
50 Miles
Overall
6 / 100
Division (M)
6 / 80
9:32:00

2025

2 Races | 125 mi.

JFK

Nov 22nd 2025
| Boonsboro, MD
Distance
50 Miles
Overall
162 / 1111
Division (M)
139 / 850
8:27:01
Duration
Backyard
Overall
10 / 57
Division (M)
10 / 48
75.006

2024

1 Race | 50 mi.
Duration
Backyard
Overall
32 / 57
Division (M)
32 / 58
50.004

2022

2 Races | 132 mi.

Blood Rock 100

Dec 2nd 2022
| Pelham, AL
Distance
101 Miles
Overall
7 / 16
Division (M)
7 / 15
32:57:33

Thunderbird Trail Run

Nov 12th 2022
| Norman, OK
Distance
50 KM
Overall
4 / 47
Division (M)
4 / 29
5:31:05

2019

2 Races | 131 mi.

IMTUF 100 - Idaho Mountain Trail Ultra F...

Sep 14th 2019
| McCall, ID
Distance
100 Miles
Overall
33 / 119
Division (M)
29 / 96
29:08:09

Wedel Farm 50

Aug 3rd 2019
| Argyle, WI
Distance
50 KM
Overall
3 / 26
Division (M)
3 / 20
4:28:11

2017

2 Races | 81 mi.

JFK

Nov 18th 2017
| Boonsboro, MD
Distance
50 Miles
Overall
92 / 750
Division (M)
72 / 527
8:27:59

Dirty Burg

Jul 15th 2017
| Belmont, MI
Distance
50 KM
Overall
10 / 46
Division (M)
10 / 35
5:00:38

2016

3 Races | 181 mi.

JFK

Nov 19th 2016
| Boonsboro, MD
Distance
50 Miles
Overall
324 / 753
Division (M)
270 / 564
10:14:16

Pine to Palm

Sep 10th 2016
| Williams, OR
Distance
100 Miles
Overall
21 / 82
Division (M)
18 / 60
26:25:54

Kanawha Trace trail Runs

Jul 30th 2016
| Ona, WV
Distance
50 KM
Overall
9 / 36
Division (M)
8 / 29
5:44:20

2014

3 Races | 171 mi.

Western States 100

Jun 28th 2014
| Olympic Valley, CA
Distance
100 Miles
Overall
89 / 296
Division (M)
74 / 241
22:58:30

McDonald Forest

May 10th 2014
| Corvallis, OR
Distance
50 KM
Overall
42 / 264
Division (M)
36 / 175
5:26:49

Peterson Ridge Rumble

Apr 13th 2014
| Sisters, OR
Distance
40 Miles
Overall
33 / 135
Division (M)
29 / 94
5:55:57

2013

4 Races | 240 mi.

White River 50

Jul 27th 2013
| Crystal Mountain, WA
Distance
50 Miles
Overall
101 / 286
Division (M)
86 / 215
10:15:16

Mt. Hood Trail Runs

Jul 13th 2013
| Timothy Lake, OR
Distance
50 Miles
Overall
31 / 127
Division (M)
27 / 81
8:53:15

Old Dominion

Jun 1st 2013
| Woodstock, VA
Distance
100 Miles
Overall
6 / 22
Division (M)
6 / 20
21:24:29

Peterson Ridge Rumble

Apr 14th 2013
| Sisters, OR
Distance
40 Miles
Overall
28 / 125
Division (M)
26 / 87
5:59:26

2012

2 Races | 131 mi.

Pine to Palm

Sep 15th 2012
| Williams, OR
Distance
100 Miles
Overall
17 / 73
Division (M)
14 / 58
25:11:11

Wilson Creek Frozen 50K

Jan 21st 2012
| Melba, ID
Distance
50 KM
Overall
9 / 43
Division (M)
8 / 35
7:05:57

2011

1 Race | 100 mi.

Old Dominion

Jun 4th 2011
| Woodstock, VA
Distance
100 Miles
Overall
28 / 49
Division (M)
27 / 46
23:09:48

2010

1 Race | 50 mi.

JFK

Nov 20th 2010
| Boonsboro, MD
Distance
50 Miles
Overall
179 / 1039
Division (M)
156 / 807
8:39:57

2009

1 Race | 50 mi.

JFK

Nov 21st 2009
| Boonsboro, MD
Distance
50 Miles
Overall
99 / 1009
Division (M)
86 / 764
8:11:43

2008

2 Races | 100 mi.

JFK

Nov 22nd 2008
| Boonsboro, MD
Distance
50 Miles
Overall
112 / 921
Division (M)
98 / 692
8:45:54

American River

Apr 5th 2008
| Folsom, CA
Distance
50 Miles
Overall
220 / 466
Division (M)
184 / 339
9:56:02
28
Races
18y 0m 0d
Longevity
1,692
Lifetime Miles

Personal Bests

50k (6)
4:28:11
2019
50m (10)
8:11:43
2009
100m (6)
21:24:29
2013
Backyard (3)
100.008
2026

Distance by Year

2026
150 Miles
2 Races
2025
125 Miles
2 Races
2024
50 Miles
1 Race
2022
132 Miles
2 Races
2019
131 Miles
2 Races
2017
81 Miles
2 Races
2016
181 Miles
3 Races
2014
171 Miles
3 Races
2013
240 Miles
4 Races
2012
131 Miles
2 Races
2011
100 Miles
1 Race
2010
50 Miles
1 Race
2009
50 Miles
1 Race
2008
100 Miles
2 Races

Multiple Performances

2025
139th Place
2017
72nd Place
2016
270th Place
2010
156th Place
2009
86th Place
2008
98th Place
2016
18th Place
2012
14th Place
2014
29th Place
2013
26th Place
2013
6th Place
2011
27th Place

4:28:11

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+

Weekly Newsletter

A roundup of the week's content and most recent race results. Sent once a week on Thursday.

Recent Results

MCW The Tatum Classic
Middletown Township, NJ - 16 finishers
50 KM
Connor's Claims Ultra
Stockton, UT - 24 finishers
50 Miles | 50 KM
Momentus Backyard Ultra
Monroe, NC - 74 finishers
Backyard
Echo Valley Runs
Chelan, WA - 80 finishers
50 KM
Worlds End Ultramarathons
Forksville, PA - 299 finishers
100 KM | 50 KM
Blackfoot Ultra
Edmonton, AB - 124 finishers
100 KM | 50 Miles | 50 KM
Lake Tye Challenge
Monroe, WA - 25 finishers
12 Hours | 6 Hours
Yankee Springs Trail Run
Middleville, MI - 60 finishers
100 KM | 50 KM
Mohican Trail Run
Loudonville, OH - 251 finishers
100 Miles | 50 Miles
View All Results