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| Name: | Zemach, Ken |
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| Club: | Westeros Trail Running Society | ||
| Residence: | Västerås | ||
| Year of birth: | 1969 | (Cat. german: M55) | |
| Date of birth: | 27.03.1969 | (Cat. internat.: M55) | |
| Nationality: | USA  |
United States | |
| RunnerID: | 122520 | ||
61 search results (61 Events, 9020.486 km). (More)
| 2026 | 1 Event, 160.934 km (More) | ||||
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| 17.-18.01.2026 | Coldwater Rumble 100 Mile Race (USA) | 100mi | |||
| 22:42:40 h | Zemach, Ken | *Reno, NV | Overall: 14 | M: 12 | Cat M55: 1 |
| 2025 | 2 Events, 804.671 km (More) | ||||
| 02.-03.08.2025 | Angeles Crest 100 Mile (USA) | 100mi | |||
| 28:02:09 h | Zemach, Ken | *Reno, NV | Overall: 21 | M: 20 | Cat M55: 1 |
| 12.-22.06.2025 | The Last Annual Heart of the South Road Race (USA) | 400mi | |||
| 6d 01:06:56 h | Zemach, Ken | *Reno, NV | Overall: 1 | M: 1 | Cat M55: 1 |
| 2024 | 4 Events, 642.802 km (More) | ||||
| 14.-15.09.2024 | Plain 100 Mile Endurance Run (USA) | 100mi | |||
| 30:04:00 h | Zemach, Ken | *Reno, NV | Overall: 10 | M: 9 | Cat M55: 1 |
| 09.-11.08.2024 | Swiss Alps 100 - 100mi (SUI) | 160km | |||
| 35:08:53 h | Zemach, Ken | Overall: 30 | M: 25 | Cat M55: 1 | |
| 07.-08.06.2024 | Scout Mountain 100 Mile Ultra Trail (USA) | 100mi | |||
| 27:38:38 h | Zemach, Ken | *Reno, NV | Overall: 6 | M: 6 | Cat M55: 1 |
| 03.-04.05.2024 | Salt Flats 100 Mile (USA) | 100mi | |||
| 20:22:10 h | Zemach, Ken | *Reno, NV | Overall: 2 | M: 2 | Cat M55: 1 |
| 2023 | 4 Events, 1204.891 km (More) | ||||
| 13.-17.10.2023 | Moab 240 Endurance Run (USA) | 238mi | |||
| 3d 18:46:18 h | Zemach, Ken | *Reno, NV | Overall: 20 | M: 16 | Cat M50: 4 |
| 13.-23.07.2023 | Last Annual Vol-State 500K Endurance Run (USA) | 500km | |||
| 3d 17:03:22 h | Zemach, Ken | *Reno, NV | Overall: 1 | M: 1 | Cat M50: 1 |
| 24.-25.06.2023 | Western States 100 Mile Endurance Run (USA) | 100mi | |||
| 21:24:35 h | Zemach, Ken | Overall: 49 | M: 34 | Cat M50: 1 | |
| 25.-26.03.2023 | Lake Martin 100 Mile Endurance Race (USA) | 100mi | |||
| 21:09:30 h | Zemach, Ken | *Reno, NV | Overall: 2 | M: 2 | Cat M50: 1 |
| 2022 | 4 Events, 562.802 km (More) | ||||
| 24.-25.09.2022 | Mountain Lakes 100 (USA) | 100mi | |||
| 18:52:40 h | Zemach, Ken | *Reno, NV | Overall: 7 | M: 7 | Cat M50: 2 |
| 29.-30.07.2022 | Crazy Mountain 100 (USA) | 100mi | |||
| 28:18:33 h | Zemach, Ken | *Vasteras, SW | Overall: 11 | M: 11 | Cat M50: 1 |
| 18.06.2022 | EcoTrail Stockholm 80 km (SWE) | 80km | |||
| 8:58:39 h | Zemach, Ken | *Västerås | Overall: 16 | M: 14 | Cat M50: 2 |
| 02.-03.04.2022 | Rim Runner 100 Mile Trail Race (USA) | 100mi | |||
| 24:12:37 h | Zemach, Ken | *Västerås | Overall: 1 | M: 1 | Cat M50: 1 |
| 2021 | 2 Events, 321.868 km (More) | ||||
| 10.-12.09.2021 | Marviksdrömmen 100 miles (SWE) | 100mi | |||
| 34:42:00 h | Zemach, Ken | Westeros Trail Running Society | Overall: 2 | M: 2 | Cat M50: 1 |
| 16.-18.07.2021 | Hardrock Hundred Endurance Run (USA) | 100mi | |||
| 36:53:00 h | Zemach, Ken | *Västerås | Overall: 32 | M: 28 | Cat M50: 3 |
| 2020 | 1 Event, 160.934 km (More) | ||||
| 09.10.2020 | Täby Extreme Challenge 100 miles - Friday (SWE) | 100mi | |||
| 18:28:25 h | Zemach, Ken | Westeros Trail Running Society | Overall: 1 | M: 1 | Cat M50: 1 |
| 2019 | 6 Events, 625.087 km (More) | ||||
| 12.-13.10.2019 | Ultra Trail Lake Tahoe 100 Mile Race (USA) | 100mi | |||
| 24:10:52 h | Zemach, Ken | *Reno, NV | Overall: 2 | M: 2 | Cat M50: 1 |
| 24.08.2019 | Castle Peak 100 (USA) | 100km | |||
| 14:33:39 h | Zemach, Ken | *Reno, NV | Overall: 18 | M: 16 | Cat M50: 2 |
| 26.-28.07.2019 | Ouray 100 Mile Endurance Run (USA) | 102mi | |||
| 33:47:00 h | Zemach, Ken | *Reno, NV | Overall: 2 | M: 2 | Cat M50: 1 |
| 01.06.2019 | Bishop High Sierra Ultramarathons 100 km (USA) | 100km | |||
| 11:13:17 h | Zemach, Ken | *Reno, NV | Overall: 2 | M: 2 | Cat M50: 1 |
| 11.05.2019 | Paiute Meadows Trail Run (USA) | 50km | |||
| 5:00:06 h | Zemach, Ken | *Reno, NV | Overall: 5 | M: 4 | Cat M50: 1 |
| 04.05.2019 | Armstrong Redwoods 50K Trail Run (USA) | 50km | |||
| 5:39:24 h | Zemach, Ken | *Reno, NV | Overall: 5 | M: 4 | Cat M50: 1 |
| 2018 | 5 Events, 675.923 km (More) | ||||
| 13.-14.10.2018 | Euchre Bar Massacre (USA) | 50mi | |||
| 23:14:00 h | Zemach, Ken | *Reno, NV | Overall: 2 | M: 3 | Cat M45: 2 |
| 15.-16.09.2018 | Teanaway Country 100 Race (USA) | 100mi | |||
| 25:05:15 h | Zemach, Ken | *Reno, NV | Overall: 4 | M: 4 | Cat M45: 1 |
| 08.-09.06.2018 | San Diego 100 Mile Endurance Run (USA) | 100mi | |||
| 21:55:35 h | Zemach, Ken | *Reno, NV | Overall: 5 | M: 5 | Cat M45: 2 |
| 19.05.2018 | Jemez Mountain 50mi Trail Run (USA) | 50mi | |||
| 9:47:00 h | Zemach, Ken | *Reno, NV | Overall: 17 | M: 17 | Cat M45: 3 |
| 17.-18.03.2018 | 4mph Challenge (USA) | 32h | |||
| 193.121 km | Zemach, Ken | *Reno, NV | Overall: 2 | M: 2 | Cat M45: 1 |
| 2017 | 5 Events, 698.955 km (More) | ||||
| 14.-15.10.2017 | Euchre Bar Massacre (USA) | 50mi | |||
| 27:03:00 h | Zemach, Ken | *Reno, NV | Overall: 1 | M: 1 | Cat M45: 1 |
| 08.-12.09.2017 | Tahoe 200 Mile Endurance Run (USA) | 202mi | |||
| 2d 16:39:33 h | Zemach, Ken | *Reno, NV | Overall: 3 | M: 3 | Cat M45: 1 |
| 15.-16.07.2017 | Tahoe Rim Trail 100M Endurance Run (USA) | 100mi | |||
| 21:13:23 h | Zemach, Ken | *Reno, NV | Overall: 6 | M: 6 | Cat M45: 3 |
| 17.06.2017 | The Broken Arrow Skyrace (USA) | 52km | |||
| 6:46:21 h | Zemach, Ken | *Reno, NV | Overall: 40 | M: 34 | Cat M45: 2 |
| 20.05.2017 | Silver State 50 Mile (USA) | 50mi | |||
| 9:05:48 h | Zemach, Ken | *Reno, NV | Overall: 8 | M: 8 | Cat M45: 1 |
| 2016 | 5 Events, 502.335 km (More) | ||||
| 15.-16.10.2016 | Euchre Bar Massacre (USA) | 50mi | |||
| 26:37:00 h | Zemach, Ken | *Reno, NV | Overall: 2 | M: 2 | Cat M45: 1 |
| 09.-10.09.2016 | Wasatch Front 100 Mile (USA) | 100mi | |||
| 26:27:17 h | Zemach, Ken | *Redwood City, CA | Overall: 30 | M: 27 | Cat M45: 3 |
| 06.08.2016 | Sierra Crest 50K Ultra Run (USA) | 50km | |||
| 5:06:32 h | Zemach, Ken | *Reno, NV | Overall: 9 | M: 9 | Cat M45: 2 |
| 17.-18.06.2016 | Bighorn Mountain Wild & Scenic 100 Mile Trail Run (USA) | 100mi | |||
| 22:48:20 h | Zemach, Ken | *Redwood City, CA | Overall: 13 | M: 11 | Cat M45: 2 |
| 17.04.2016 | Diablo Trails Challenge (USA) | 50km | |||
| 5:46:11 h | Zemach, Ken | Overall: 11 | M: 11 | Cat M45: 1 | |
| 2015 | 3 Events, 456.934 km (More) | ||||
| 25.-26.09.2015 | Spartathlon (GRE) | 246km | |||
| 30:58:54 h | Zemach, Ken | Overall: 39 | M: 33 | Cat M45: 11 | |
| 10.-11.07.2015 | Santa Barbara 100 Mile Endurance Race (USA) | 100mi | |||
| 21:50:42 h | Zemach, Ken | *Redwood City, CA | Overall: 2 | M: 2 | Cat M45: 1 |
| 12.04.2015 | Woodside Purisima Creek Crossover (USA) | 50km | |||
| 5:19:11 h | Zemach, Ken | *Redwood City, CA | Overall: 13 | M: 12 | Cat M45: 3 |
| 2014 | 5 Events, 584.522 km (More) | ||||
| 07.09.2014 | Diablo 50 km Trail Run (USA) | 50km | |||
| 5:56:40 h | Zemach, Ken | *Redwood City, CA | Overall: 7 | M: 7 | Cat M45: 2 |
| 15.-17.08.2014 | Fat Dog 120 Mile Trail Race (CAN) | 120mi | |||
| 30:32:06 h | Zemach, Ken | Overall: 6 | M: 6 | Cat M45: 1 | |
| 28.-29.06.2014 | Black Hills 100 Mile Run (USA) | 100mi | |||
| 23:22:37 h | Zemach, Ken | *Menlo Park, CA | Overall: 5 | M: 5 | Cat M45: 1 |
| 10.05.2014 | Quicksilver 100 km Endurance Run (USA) | 100km | |||
| 10:54:20 h | Zemach, Ken | *Menlo Park, CA | Overall: 4 | M: 4 | Cat M45: 1 |
| 15.03.2014 | Marin Ultra Challenge 50 Mile Race (USA) | 50mi | |||
| 8:51:17 h | Zemach, Ken | *Redwood City | Overall: 11 | M: 10 | Cat M40: 1 |
| 2013 | 4 Events, 537.851 km (More) | ||||
| 28.-29.09.2013 | Mogollon Monster 100 Mile (USA) | 106mi | |||
| 32:18:00 h | Zemach, Ken | *Menlo Park, CA | Overall: 10 | M: 9 | Cat M40: 2 |
| 15.-17.07.2013 | Badwater Ultramarathon (USA) | 135mi | |||
| 28:37:22 h | Zemach, Ken | *Redwood City, CA | Overall: 7 | M: 7 | Cat M40: 2 |
| 11.05.2013 | Gold Rush 100k (USA) | 100km | |||
| 10:04:39 h | Zemach, Ken | Overall: 4 | M: 3 | Cat M40: 1 | |
| 13.04.2013 | Woodside Ramble 50K - Spring (USA) | 50km | |||
| 4:36:13 h | Zemach, Ken | *Redwood City, CA | Overall: 3 | M: 3 | Cat M40: 1 |
| 2012 | 6 Events, 677.642 km (More) | ||||
| 17.-18.11.2012 | The Chimera 100 Mile Mountain Race (USA) | 100mi | |||
| 20:33:00 h | Zemach, Ken | *Menlo Park, CA | Overall: 6 | M: 6 | Cat M40: 2 |
| 21.-23.09.2012 | The 'Toad Challenge' Thames Path Multistage Ultra (GBR) | 90mi/3stages | |||
| 12:44:56 h | Zemach, Ken | Overall: 2 | M: 2 | Cat M40: 1 | |
| 25.-26.08.2012 | Cascade Crest Classic 100 Mile (USA) | 100mi | |||
| 21:27:42 h | Zemach, Ken | *Menlo Park, CA | Overall: 6 | M: 6 | Cat M40: 1 |
| 28.07.2012 | White River 50 Mile Trail Run (USA) | 50mi | |||
| 8:18:08 h | Zemach, Ken | *Redwood City, CA | Overall: 29 | M: 27 | Cat M40: 6 |
| 30.06.2012 | Marin Ultra Challenge 50 km Race (USA) | 50km | |||
| 4:59:12 h | Zemach, Ken | *Redwood City, CA | Overall: 7 | M: 6 | Cat M40: 3 |
| 20.05.2012 | The Cardiff Ultra 50 Miles (GBR) | 50mi | |||
| 7:14:34 h | Zemach, Ken | Overall: 4 | M: 4 | Cat M40: 2 | |
| 2010 | 4 Events, 402.335 km (More) | ||||
| 23.-24.10.2010 | Javelina Jundred 100 Mile Endurance Run (USA) | 100mi | |||
| 18:36:29 h | Zemach, Ken | *CA | Overall: 4 | M: 3 | Cat M40: 1 |
| 04.09.2010 | Dingle 50 Mile Ultra Marathon (IRL) | 50mi | |||
| 7:08:00 h | Zemach, Ken | Overall: 4 | M: 4 | Cat M40: 3 | |
| 24.-25.07.2010 | Lakeland 50 Mile (GBR) | 50mi | |||
| 9:31:36 h | Zemach, Ken | Overall: 7 | M: 7 | Cat M40: 3 | |
| 10.04.2010 | American River 50 Mile Endurance Run (USA) | 50mi | |||
| 8:10:55 h | Zemach, Ken | Overall: 68 | M: 55 | Cat M40: 7 | |
Personal bests
Your list of personal best performances only contains performances of races which can be included into rankings.
In brackets rank in yearly international/national rankings.
| PB | 2026 | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 | 2014 | 2013 | 2012 | 2010 | |
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| 50mi | 7:08:00 |
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7:08:00
(23/20) |
| 100mi | 18:28:25 |
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18:28:25
(120/31) |
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Comparison table
Comparison of performances in races with multiple participations
| 2026 | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 | 2014 | 2013 | 2012 | 2010 | ||
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| Euchre Bar Massacre | 3 | 23:14:00 | 27:03:00 | 26:37:00 |