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JR
Jack Rosenfeld
MaleWashington1999–2025
18
Total Finishes
14
Different Races
3
States (6%)
1:23:07
PR (6:21/mi)
2:15:37
Average
+0:16:57
Slower (first to last)
Medal House
2013
Emerald Bay Half Marathon
4:21:23
#18 overall#11 gender
2013
Pikes Peak Ascent
5:19:26
#1306 overall#896 gender
2012
Sunrise Marathon 5K/10K/13.1 SAN FRANCISCO
1:23:07
#69 overall#64 gender
2011
Pikes Peak Ascent
4:08:15
#610 overall#492 gender
2010
Run Malibu
1:37:25
#42 overall#38 gender
2010
Malibu International Marathon and Half
1:37:25
#42 overall#38 gender
2009
Beer City Half San Diego
1:30:09
#133 overall#114 gender
2009
Run Malibu
1:39:18
#32 overall#26 gender
2006
Santa Clarita Marathon
1:26:23
#24 overall#23 gender
2004
OC Marathon - Half Marathon - 5K
1:29:57
#74 overall#66 gender
2000
Beer City Half San Diego
1:32:40
#247 overall#217 gender
1999
Beer City Half San Diego
1:25:47
#173 overall#154 gender
Performance Timeline
Complete Race Log
| Year | Race | State | Time | Place |
|---|---|---|---|---|
| 2025 | The Brooks Orca Half Marathon presented by REISeattle | WA | 1:42:44 | #61 |
| 2024 | Philadelphia MarathonPhiladelphia | PA | 2:08:27 | #5303 |
| 2020 | Rain Run Half Marathonredmond | WA | 2:11:16 | #206 |
| 2017 | Rock 'n' Roll Los Angeles Half MarathonLos Angeles | CA | 1:43:59 | #314 |
| 2015 | Hotlanta Half MarathonAtlanta | GA | 2:50:16 | #958 |
| 2014 | New Year's Race Los Angeles | — | 1:45:12 | #182 |
| 2014 | Operation Jack Marathon & Half Marathon | — | 2:19:50 | #114 |
| 2014 | Pier to Peak Half MarathonSanta Barbara | CA | 2:20:40 | #72 |
| 2013 | Emerald Bay Half MarathonSouth Lake Tahoe | CA | 4:21:23 | #18 |
| 2013 | Pikes Peak AscentManitou Springs | CO | 5:19:26 | #1306 |
| 2012 | Sunrise Marathon 5K/10K/13.1 SAN FRANCISCOSan Francisco | CA | 1:23:07 | #69 |
| 2011 | Pikes Peak AscentManitou Springs | CO | 4:08:15 | #610 |
| 2010 | Run MalibuMalibu | CA | 1:37:25 | #42 |
| 2010 | Malibu International Marathon and Half | — | 1:37:25 | #42 |
| 2009 | Beer City Half San DiegoSan Diego | CA | 1:30:09 | #133 |
| 2009 | Run MalibuMalibu | CA | 1:39:18 | #32 |
| 2006 | Santa Clarita MarathonSanta Clarita | CA | 1:26:23 | #24 |
| 2004 | OC Marathon - Half Marathon - 5KNewport Beach | CA | 1:29:57 | #74 |
| 2000 | Beer City Half San DiegoSan Diego | CA | 1:32:40 | #247 |
| 1999 | Beer City Half San DiegoSan Diego | CA | 1:25:47 | #173 |
States Raced
1 race 2 races 3-4 races 5+ races
State Breakdown
CACalifornia
11 racesWAWashington
2 racesGAGeorgia
1 race50-State Challenge
3/ 50 states
47 states to go