Ken Zemach (M57)

2026

2 Races | 200 mi.

Grasslands Trail Run

Mar 21st 2026
| Decatur, TX
Distance
100 Miles
Overall
12 / 31
Division (M)
10 / 24
24:17:58

Coldwater Hundred

Jan 17th 2026
| Goodyear, AZ
Distance
100 Miles
Overall
14 / 91
Division (M)
12 / 77
22:42:40

2025

2 Races | 500 mi.

Angeles Crest

Aug 2nd 2025
| Wrightwood, CA
Distance
100 Miles
Overall
21 / 103
Division (M)
20 / 84
28:02:08

The Last Annual Heart of the South Road...

Jun 12th 2025
| Bryant, AL
Distance
400 Miles
Overall
1 / 30
Division (M)
1 / 20
145:06:56

2024

4 Races | 399 mi.

Plain 100M/100K Endurance Runs

Sep 14th 2024
| Plain, WA
Distance
100 Miles
Overall
10 / 25
Division (M)
9 / 22
30:04:00

Swiss Alps 100

Aug 9th 2024
Distance
160 KM
Overall
30 / 97
Division (M)
25 / 85
35:08:53

Scout Mountain Ultra Trail

Jun 7th 2024
| Pocatello, ID
Distance
100 Miles
Overall
6 / 27
Division (M)
6 / 20
27:38:37

Salt Flats Endurance Runs

May 3rd 2024
| Wendover, UT
Distance
100 Miles
Overall
2 / 31
Division (M)
2 / 25
20:22:10

2023

4 Races | 751 mi.

Moab 240

Oct 13th 2023
| Moab, UT
Distance
240 Miles
Overall
20 / 112
Division (M)
16 / 88
90:46:18

Vol State

Jul 13th 2023
| Dorena Landing, MO
Distance
500 KM
Overall
1 / 93
Division (M)
1 / 51
89:03:22

Western States 100

Jun 24th 2023
| Olympic Valley, CA
Distance
100 Miles
Overall
49 / 328
Division (M)
34 / 260
21:24:35

Lake Martin 100

Mar 25th 2023
| Alexander City, AL
Distance
100 Miles
Overall
2 / 15
Division (M)
2 / 14
21:09:30

2022

4 Races | 350 mi.

Mountain Lakes 100

Sep 24th 2022
| Olallie Lake, OR
Distance
100 Miles
Overall
7 / 110
Division (M)
7 / 77
18:52:40

Crazy Mountain 100

Jul 29th 2022
| Lennep, MT
Distance
100 Miles
Overall
11 / 73
Division (M)
11 / 57
28:18:33

EcoTrail Stockholm 80 km

Jun 18th 2022
Distance
80 KM
Overall
16 / 96
Division (M)
14 / 74
8:58:39

Rim Runner Trail Races

Apr 2nd 2022
| Sewanee, TN
Distance
100 Miles
Overall
1 / 12
Division (M)
1 / 11
24:12:37

2021

1 Race | 100 mi.

Hardrock 100 Endurance Run

Jul 16th 2021
| Silverton, CO
Distance
100 Miles
Overall
32 / 112
Division (M)
28 / 101
36:53:00

2019

6 Races | 386 mi.

Ultra Trails Lake Tahoe

Oct 12th 2019
| Lake Tahoe, CA
Distance
100 Miles
Overall
2 / 6
Division (M)
2 / 5
24:10:52

Castle Peak 100k

Aug 24th 2019
| Truckee, CA
Distance
100 KM
Overall
18 / 144
Division (M)
16 / 120
14:33:39

Ouray 100 Mile Endurance Run

Jul 26th 2019
| Ouray, CO
Distance
100 Miles
Overall
2 / 32
Division (M)
2 / 29
33:47:00

Bishop High Sierra

Jun 1st 2019
| Bishop, CA
Distance
100 KM
Overall
2 / 29
Division (M)
2 / 20
11:13:17

Paiute Meadows Trail Run

May 11th 2019
| Susanville, CA
Distance
50 KM
Overall
5 / 34
Division (M)
4 / 14
5:00:06

Armstrong Redwoods Trail Run

May 4th 2019
| Guerneville, CA
Distance
50 KM
Overall
5 / 37
Division (M)
4 / 24
5:39:24

2018

5 Races | 420 mi.

Euchre Bar Massacre

Oct 13th 2018
| Foresthill, CA
Distance
50 Miles
Overall
3 / 6
Division (M)
3 / 6
23:14:00

Teanaway Country 100M/50M/50K

Sep 15th 2018
| Cle Elum, WA
Distance
100 Miles
Overall
4 / 51
Division (M)
4 / 37
25:05:15

San Diego 100

Jun 8th 2018
| Lake Cuyamaca, CA
Distance
100 Miles
Overall
5 / 151
Division (M)
5 / 115
21:55:35

Jemez Mountain

May 19th 2018
| Los Alamos, NM
Distance
50 Miles
Overall
17 / 90
Division (M)
17 / 79
9:47:00

The 4MPH Challenge

Mar 17th 2018
| Whiskeytown, CA
Duration
Backyard
Overall
2 / 36
Division (M)
2 / 23
120

2017

5 Races | 432 mi.

Euchre Bar Massacre

Oct 14th 2017
| Foresthill, CA
Distance
50 Miles
Overall
1 / 4
Division (M)
2 / 4
27:03:00

Tahoe 200 Endurance Run

Sep 8th 2017
| Homewood, CA
Distance
200 Miles
Overall
3 / 123
Division (M)
3 / 97
64:39:33

Tahoe Rim Trail

Jul 15th 2017
| Carson City, NV
Distance
100 Miles
Overall
6 / 150
Division (M)
6 / 121
21:13:23

Broken Arrow Skyrace

Jun 17th 2017
| Olympic Valley, CA
Distance
52 KM
Overall
40 / 241
Division (M)
34 / 175
6:46:21

Silver State

May 20th 2017
| Reno, NV
Distance
50 Miles
Overall
9 / 64
Division (M)
9 / 46
9:05:48

2016

5 Races | 312 mi.

Euchre Bar Massacre

Oct 15th 2016
| Foresthill, CA
Distance
50 Miles
Overall
2 / 2
Division (M)
2 / 2
26:37:00

Wasatch 100

Sep 9th 2016
| Kaysville, UT
Distance
100 Miles
Overall
30 / 213
Division (M)
27 / 166
26:27:17

Sierra Crest 50K

Aug 6th 2016
| Truckee, CA
Distance
50 KM
Overall
9 / 61
Division (M)
9 / 41
5:06:32

Bighorn

Jun 17th 2016
| Dayton, WY
Distance
100 Miles
Overall
13 / 175
Division (M)
11 / 139
22:48:19

Diablo Trails Challenge

Apr 17th 2016
| Walnut Creek, CA
Distance
50 KM
Overall
11 / 159
Division (M)
11 / 107
5:46:11

2015

3 Races | 283 mi.

Spartathlon

Sep 26th 2015
Distance
245 KM
Overall
39 / 174
Division (M)
33 / 153
30:58:54

Santa Barbara 100

Jul 11th 2015
| Santa Barbara, CA
Distance
100 Miles
Overall
2 / 24
Division (M)
2 / 20
21:50:42

Woodside Crossover

Apr 12th 2015
| Woodside, CA
Distance
50 KM
Overall
13 / 76
Division (M)
12 / 60
5:19:11

2014

5 Races | 363 mi.

CTR - Diablo Trail Run

Sep 7th 2014
| Clayton, CA
Distance
50 KM
Overall
7 / 28
Division (M)
7 / 23
5:56:40

Fat Dog 120

Aug 15th 2014
| Manning Park, BC
Distance
120 Miles
Overall
6 / 84
Division (M)
6 / 68
30:32:06

Black Hills 100

Jun 28th 2014
| Sturgis, SD
Distance
100 Miles
Overall
5 / 32
Division (M)
5 / 22
23:22:37

Quicksilver

May 10th 2014
| San Jose, CA
Distance
100 KM
Overall
4 / 83
Division (M)
4 / 68
10:54:20

Marin Ultra Challenge

Mar 15th 2014
| Sausalito, CA
Distance
50 Miles
Overall
11 / 102
Division (M)
10 / 72
8:51:17

2013

4 Races | 328 mi.

Mogollon Monster 100

Sep 28th 2013
| Pine, AZ
Distance
100 Miles
Overall
10 / 24
Division (M)
9 / 21
32:18:00

Badwater 135

Jul 15th 2013
| Death Valley, CA
Distance
135 Miles
Overall
7 / 80
Division (M)
7 / 61
28:37:22

Gold Rush

May 11th 2013
| Folsom, CA
Distance
100 KM
Overall
4 / 81
Division (M)
3 / 61
10:04:39

Woodside Ramble - Spring

Apr 13th 2013
| Redwood City, CA
Distance
50 KM
Overall
3 / 47
Division (M)
3 / 31
4:36:13

2012

4 Races | 281 mi.

Chimera

Nov 17th 2012
| Cleveland National Forest, CA
Distance
100 Miles
Overall
6 / 76
Division (M)
6 / 60
20:33:00

Cascade Crest

Aug 25th 2012
| Easton, WA
Distance
100 Miles
Overall
6 / 96
Division (M)
6 / 75
21:27:42

White River 50

Jul 28th 2012
| Crystal Mountain, WA
Distance
50 Miles
Overall
29 / 275
Division (M)
27 / 214
8:18:08

Marin Ultra Challenge

Jun 30th 2012
| Sausalito, CA
Distance
50 KM
Overall
7 / 74
Division (M)
6 / 42
4:59:12

2010

2 Races | 150 mi.

Javelina Jundred

Oct 23rd 2010
| Fountain Hills, AZ
Distance
100 Miles
Overall
4 / 137
Division (M)
3 / 89
18:36:28

American River

Apr 10th 2010
| Folsom, CA
Distance
50 Miles
Overall
68 / 580
Division (M)
55 / 414
8:10:55
56
Races
15y 11m 19d
Longevity
5,256
Lifetime Miles

Personal Bests

50k (8)
4:36:13
2013
50m (8)
8:10:55
2010
100k (4)
10:04:39
2013
100m (25)
18:36:28
2010
Backyard (1)
120
2018

Distance by Year

2026
200 Miles
2 Races
2025
500 Miles
2 Races
2024
399 Miles
4 Races
2023
751 Miles
4 Races
2022
350 Miles
4 Races
2021
100 Miles
1 Race
2019
386 Miles
6 Races
2018
420 Miles
5 Races
2017
432 Miles
5 Races
2016
312 Miles
5 Races
2015
283 Miles
3 Races
2014
363 Miles
5 Races
2013
328 Miles
4 Races
2012
281 Miles
4 Races
2010
150 Miles
2 Races

Multiple Performances

2018
3rd Place
2017
2nd Place
2016
2nd Place

145:06:56

400 Miles

20:22:10

100 Miles

20:22:10

100 Miles

89:03:22

500 KM

Masters Winner

89:03:22

500 KM

28:18:33

100 Miles

33:47:00

100 Miles

33:47:00

100 Miles

Grand Master Course Record

11:13:17

100 KM

11:13:17

100 KM

11:13:17

100 KM

Grand Master Course Record

5:00:06

50 KM

25:05:15

100 Miles

120

Backyard

64:39:33

200 Miles

Masters Winner

23:22:37

100 Miles

Masters Winner

10:04:39

100 KM

10:04:39

100 KM

4:36:13

50 KM

4:36:13

50 KM

Masters Winner

21:27:42

100 Miles

18:36:28

100 Miles

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

Holcomb Valley trail Run
Big Bear Lake, CA - 199 finishers
33 Miles
Wings of the West Urban Ultra
Deltona, FL - 21 finishers
55 KM
Catamount Ultra
Stowe, VT - 170 finishers
50 KM
Woodbooger 100
Norton, VA - 74 finishers
100 Miles | 100 KM | 50 KM
Barr Lake
Brighton, CO - 34 finishers
50 KM
Boom or Bust Ultra Trail Run
Pioche, NV - 2 finishers
30 Miles
Sinks Canyon Trail Races
Lander, WY - 113 finishers
50 KM
Catoctin
Frederick, MD - 89 finishers
50 KM
Laurel Highlands
Ohiopyle, PA - 242 finishers
70.5 Miles | 50 KM
Little Bitty Backyard
Emmaus, PA - 30 finishers
Backyard
View All Results