DUV ULTRA STATS

Rosenfeld, Jack

United StatesManBorn 19792010 – 2026Runner id 248392
Events
35
2010 – 2026
Best pace
9.786
km/h · 2012
Best finish
27th
of 273 · 2013
Distance raced
3,163
km · splits not double-counted

Pace over time

km/h · higher is faster

1.03.45.78.110.420102026

Pace over time: 35 races from 2010 to 2026, ranging from 1.68 to 9.79 kilometres per hour, where higher is faster. A second, age-graded series is drawn above it; the gap between the two is the age credit.

  • Actual pace
  • Age-graded pace

Results

Every result for this runner in date order. Splits of a race are indented and are not counted again in the distance total.
DateEventDistanceResultPace km/hPlacing
2010-11-27
Santa Barbara Red Rock 40 MileUnited States
40mi10:36:00 h6.07343/78
2011-08-27
Bulldog 50k Ultra RunUnited States
50km6:01:18 h8.30326/162
2011-11-20
Santa Monica Mountains 50 kmUnited States*Los Angeles, CA
50km5:46:30 h8.65816/69
2011-12-03
Endurance Challenge - California Trail 50 MileUnited States*Los Angeles, CA
50mi10:02:50 h8.009130/318
2012-04-07
American River 50 Mile Endurance RunUnited States*Los Angeles, CA
50mi8:13:21 h9.78677/689
2012-05-19
Born to Run Ultra 100 km MarathonUnited States*Los Angeles, CA
100km13:54:00 h7.1948/21
2012-11-17
JFK 50 MileUnited States*Los Angeles, CA
50mi10:26:44 h7.703517/967
2013-01-13
Avalon Benefit 50-Mile RunUnited States*Los Angeles, CA
50mi8:19:05 h9.67427/273
2013-08-24
Bulldog 50k Ultra RunUnited States*Culver City, CA
50km5:51:59 h8.52367/177
2014-05-17
Born to Run Ultra 100 km MarathonUnited States
100km17:20:15 h5.76832/37
2014-08-23
Bulldog 50k Ultra RunUnited States*Culver City, CA
50km5:17:41 h9.44337/175
2014-09-13
Headlands Hundred 50 Mile Endurance RunUnited States*Culver City, CA
50mi13:31:29 h5.95050/69
2014-10-12
Whoo's In El Moro 50k Trail Races - Fall EditionUnited States*Culver City, CA
50km6:31:33 h7.66252/90
2014-12-30
Across the Years, 48hUnited StatesIAU Bronze*Culver City, CA
48h172.328 km3.59014/72
2015-02-07
Sean O'Brien 50 km Trail RaceUnited States
50km7:20:28 h6.811103/192
2015-02-21
Antelope Canyon 50 Mile RaceUnited States*Culver City, CA
50mi11:36:17 h6.93448/105
2015-05-16
Born to Run Ultra 30 Mile MarathonUnited States*Culver City, CA
30mi5:07:56 h9.40752/246
2015-12-06
OTHTC High Desert 50K UltraUnited States
50km6:25:18 h7.786123/214
2016-03-26
Cottontail 12 Hour RaceUnited States*Gigharbor, WA
12h66.095 km5.5084/9
2017-05-20
Born to Run Ultra 30 Mile MarathonUnited States*Gig Harbor, WA
30mi10:25:26 h4.632126/160
2017-06-03
Rainier to Ruston Rail-Trail 50 Mile UltraUnited States
50mi11:45:12 h6.84636/47
2017-07-23
West Seattle Beach Run - Summer EditionUnited States*Gig Harbor, WA
50km5:57:50 h8.3846/11
2018-04-14
Cottontail 12 Hour RaceUnited States*Gig Harbor, WA
12h59.014 km4.9188/10
2018-05-19
Born to Run Ultra 30 Mile MarathonUnited States*Gig Harbor, WA
30mi5:47:46 h8.33066/174
2022-09-17
Teanaway Country 50 RaceUnited States*Seattle, WA
50km14:05:00 h3.55057/62
2023-04-12
Born to Run Ultra 4 days MarathonUnited States*Seattle, WA
4d225.308 km2.34717/61
2023-07-29
Burning River 50 Mile Endurance RunUnited States*Seattle, WA
50mi14:17:24 h5.631187/227
2023-09-15
Cowboy 200United States*Seattle, WA
200mi3d 09:58:41 h3.92628/31
2024-06-28
The Yeti 100 km Endurance Run-WashingtonUnited States*Seattle, WA
100km17:40:37 h5.65736/48
2024-10-27
Cougar Mountain Trail RunUnited States*Seattle, WA
50km7:41:04 h6.50723/39
2024-12-14
Deception Pass 50 kmUnited States
50km7:10:52 h6.963170/210
2025-05-14
Born to Run Ultra 4 days MarathonUnited States*Seattle, WA
4d241.401 km2.51510/94
2025-08-02
Hamster Endurance Runs 32 Hour RunUnited States
32h163.187 km5.1009/33
2026-01-10
Bridle Trails Winter Running FestivalUnited States
50km7:02:48 h7.09640/44
2026-05-13
Born to Run Ultra 4 days MarathonUnited States*Seattle, WA
4d160.934 km1.67631/101