Cheng, Jack
United StatesManBorn 19712008 – 2026Runner id 66497
Events
107
104 race dates
Best pace
11.585
km/h · 2019
Best finish
1st
of 81 · 2017
Distance raced
9,940
km · splits not double-counted
Pace over time
km/h · higher is faster
Pace over time: 105 races and 2 splits from 2008 to 2026, ranging from 5.22 to 12.65 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
- Split of a race already plotted
Results
| Date | Event | Distance | Result | Pace km/h | Placing |
|---|---|---|---|---|---|
| 2008-08-09 | 50km | 6:58:53 h | 7.162 | 36/143 | |
| 2009-03-28 | 50mi | 12:49:02 h | 6.278 | 50/84 | |
| 2009-06-06 | 100mi | 29:34:03 h | 5.443 | 72/82 | |
| 2009-06-14 | Holcomb Valley 33 MileUnited States | 33mi | 7:06:50 h | 7.465 | 48/102 |
| 2009-08-08 | 50mi | 11:13:38 h | 7.167 | 31/72 | |
| 2009-08-22 | Bulldog 50k Ultra RunUnited States | 50km | 5:03:32 h | 9.884 | 20/185 |
| 2009-10-31 | Javelina Jundred 100 km Endurance RunUnited States | 100km | 14:18:44 h | 6.987 | 24/102 |
| 2009-12-06 | 50km | 4:47:57 h | 10.418 | 32/226 | |
| 2010-01-16 | 50mi | 9:18:33 h | 8.644 | 32/158 | |
| 2010-02-20 | 100km | 10:20:57 h | 9.663 | 5/18 | |
| 2010-02-20 | Orange Curtain 100km Ultra Race - 50km SplitUnited StatesSplit of the race above; not counted again in the distance total*Temple City, CA | 50km | 4:54:36 h | 10.183 | 5/18 |
| 2010-03-06 | San Juan Trail 50 KmUnited States | 50km | 5:57:19 h | 8.396 | 21/92 |
| 2010-03-20 | 50km | 5:29:00 h | 9.119 | 13/115 | |
| 2010-03-27 | 50mi | 10:22:05 h | 7.761 | 22/105 | |
| 2010-04-17 | 50mi | 9:29:24 h | 8.479 | 41/153 | |
| 2010-05-01 | 50km | 5:54:42 h | 8.458 | 12/63 | |
| 2010-05-08 | 50mi | 9:55:26 h | 8.108 | 21/86 | |
| 2010-05-15 | 100km | 14:58:28 h | 6.678 | 17/45 | |
| 2010-06-12 | 100mi | 29:35:20 h | 5.439 | 80/90 | |
| 2010-07-10 | 50km | 6:48:00 h | 7.353 | 15/55 | |
| 2010-08-07 | 50km | 5:54:27 h | 8.464 | 13/93 | |
| 2010-08-21 | Bulldog 50k Ultra RunUnited States | 50km | 6:31:00 h | 7.673 | 98/199 |
| 2010-08-28 | 100mi | 30:38:50 h | 5.251 | 41/66 | |
| 2010-09-25 | 50km | 6:39:16 h | 7.514 | 42/153 | |
| 2010-10-23 | 100mi | 23:51:04 h | 6.747 | 50/137 | |
| 2010-11-27 | Santa Barbara Red Rock 40 MileUnited States | 40mi | 9:42:00 h | 6.636 | 25/78 |
| 2010-12-05 | 50km | 4:39:13 h | 10.744 | 29/263 | |
| 2011-01-15 | 50mi | 9:45:27 h | 8.247 | 60/222 | |
| 2011-03-05 | San Juan Trail 50 KmUnited States | 50km | 5:39:31 h | 8.836 | 10/69 |
| 2011-04-09 | 100mi | 23:26:42 h | 6.864 | 5/18 | |
| 2011-05-07 | 100km | 14:14:23 h | 7.023 | 217/287 | |
| 2011-05-21 | 100km | 14:12:28 h | 7.038 | 22/40 | |
| 2011-06-11 | 100mi | 27:37:11 h | 5.827 | 54/106 | |
| 2011-07-23 | 100mi | 29:47:49 h | 5.401 | 36/71 | |
| 2011-08-13 | Angeles National Forest 50k Trail RaceUnited States | 50km | 6:31:05 h | 7.671 | 24/123 |
| 2011-11-26 | 50mi | 12:57:00 h | 6.214 | 18/63 | |
| 2011-12-04 | 50km | 4:44:48 h | 10.534 | 21/219 | |
| 2012-01-14 | 50mi | 9:13:04 h | 8.730 | 49/276 | |
| 2012-02-24 | 100mi | 26:37:36 h | 6.044 | 50/87 | |
| 2012-04-21 | 100mi | 25:44:08 h | 6.253 | 11/16 | |
| 2012-05-19 | 100km | 16:02:31 h | 6.234 | 30/43 | |
| 2012-06-09 | 100mi | 28:46:35 h | 5.593 | 83/131 | |
| 2012-07-21 | 100mi | 29:41:11 h | 5.421 | 44/75 | |
| 2012-10-20 | 100mi | 23:17:00 h | 6.912 | 9/26 | |
| 2012-11-17 | 100mi | 30:49:11 h | 5.222 | 57/76 | |
| 2013-01-27 | Calico Trail Run 50 kmUnited States | 50km | 5:08:20 h | 9.730 | 12/91 |
| 2013-02-17 | 50km | 5:43:48 h | 8.726 | 28/140 | |
| 2013-03-23 | 50mi | 10:54:06 h | 7.381 | 33/117 | |
| 2013-05-04 | 50km | 5:38:07 h | 8.873 | 3/34 | |
| 2013-05-18 | Bishop High Sierra Ultramarathons 100 kmUnited States | 100km | 13:45:51 h | 7.265 | 25/74 |
| 2013-06-08 | San Diego 100 Mile Endurance RunUnited States | 100mi | 25:46:27 h | 6.244 | 31/82 |
| 2013-09-14 | 50km | 6:49:12 h | 7.331 | 9/66 | |
| 2013-10-12 | 100km | 13:20:30 h | 7.495 | 24/89 | |
| 2013-11-09 | Chino Hills 50K RaceUnited States | 50km | 5:10:27 h | 9.663 | 8/90 |
| 2014-01-26 | Calico Trail Run 50 kmUnited States | 50km | 5:00:36 h | 9.980 | 9/98 |
| 2014-02-15 | Jackpot Ultra Running Festival 100 Mile RaceUnited States | 100mi | 18:35:55 h | 8.653 | 6/51 |
| 2014-03-22 | 50mi | 9:41:27 h | 8.303 | 10/64 | |
| 2014-04-26 | Leona Divide 50 Mile RunUnited States | 50mi | 9:31:53 h | 8.442 | 40/183 |
| 2014-05-24 | 100mi | 20:41:07 h | 7.780 | 6/47 | |
| 2014-08-02 | 100mi | 26:24:56 h | 6.092 | 28/92 | |
| 2014-09-06 | 50km | 7:07:32 h | 7.017 | 11/54 | |
| 2014-10-04 | 100km | 14:43:11 h | 6.794 | 48/124 | |
| 2014-11-08 | Chino Hills 50K RaceUnited States | 50km | 5:37:49 h | 8.881 | 10/92 |
| 2015-01-17 | 50mi | 9:34:18 h | 8.407 | 50/168 | |
| 2015-03-21 | 50mi | 11:22:29 h | 7.074 | 19/66 | |
| 2015-05-02 | 100km | 15:25:45 h | 6.481 | 39/84 | |
| 2015-06-27 | 100mi | 26:45:18 h | 6.015 | 131/254 | |
| 2015-11-21 | 50km | 5:36:20 h | 8.920 | 10/99 | |
| 2016-02-06 | Sean O'Brien 50 Mile Trail RaceUnited States | 50mi | 10:25:44 h | 7.716 | 13/62 |
| 2016-02-27 | 100km | 11:35:46 h | 8.624 | 4/10 | |
| 2016-03-26 | 50mi | 11:08:24 h | 7.223 | 14/53 | |
| 2016-04-16 | Leona Divide 50 Mile RunUnited States | 50mi | 10:10:24 h | 7.910 | 43/147 |
| 2016-06-25 | 100mi | 27:17:49 h | 5.896 | 142/280 | |
| 2016-08-06 | 100mi | 27:19:30 h | 5.890 | 49/130 | |
| 2016-11-19 | 50km | 5:19:22 h | 9.394 | 14/115 | |
| 2017-02-25 | 100km | 10:34:15 h | 9.460 | 2/8 | |
| 2017-04-22 | 50mi | 11:15:37 h | 7.146 | 49/98 | |
| 2017-05-27 | 24h | 180.246 km | 7.510 | 1/81 | |
| 2017-05-27 | Nanny Goat 100 Mile RaceUnited States | 100mi | 19:20:59 h | 8.317 | 1/32 |
| 2017-06-11 | 33mi | 6:00:51 h | 8.831 | 16/91 | |
| 2017-08-26 | 50km | 7:30:00 h | 6.667 | 10/58 | |
| 2017-09-16 | 50km | 7:24:36 h | 6.748 | 28/101 | |
| 2017-11-04 | 100mi | 22:48:47 h | 7.054 | 1/7 | |
| 2018-02-24 | 100km | 11:18:33 h | 8.842 | 5/15 | |
| 2018-06-16 | 33mi | 6:37:54 h | 8.008 | 19/62 | |
| 2018-11-10 | Chino Hills 50K RaceUnited States | 50km | 5:19:49 h | 9.380 | 16/125 |
| 2019-02-16 | 50km | 4:18:57 h | 11.585 | 5/36 | |
| 2019-06-15 | 33mi | 6:00:40 h | 8.835 | 15/82 | |
| 2019-06-29 | 24h | 172.071 km | 7.170 | 2/61 | |
| 2019-08-16 | 100mi | 29:52:52 h | 5.386 | 27/85 | |
| 2019-12-01 | 50km | 4:26:18 h | 11.265 | 5/113 | |
| 2020-01-26 | Calico Trail Run 50 kmUnited States | 50km | 5:09:03 h | 9.707 | 10/77 |
| 2020-02-28 | 24h | 180.000 km | 7.500 | 1/16 | |
| 2021-11-13 | Boundiful 12 Hours Endurance RunUnited States | 12h | 93.341 km | 7.778 | 1/21 |
| 2021-12-05 | 50km | 4:31:15 h | 11.060 | 11/95 | |
| 2022-02-11 | 100mi | 24:14:33 h | 6.639 | 3/33 | |
| 2022-03-12 | 100mi | 22:31:50 h | 7.143 | 1/1 | |
| 2022-06-11 | Holcomb Valley 33 MileUnited States | 33mi | 6:11:43 h | 8.572 | 12/55 |
| 2023-01-22 | 50km | 5:22:10 h | 9.312 | 11/62 | |
| 2023-04-14 | 100mi | 23:17:18 h | 6.911 | 4/45 | |
| 2023-12-09 | 50km | 4:36:03 h | 10.868 | 4/85 | |
| 2024-06-08 | 33mi | 6:17:53 h | 8.432 | 25/168 | |
| 2024-10-05 | Boundiful 12 Hours Endurance RunUnited States | 12h | 88.513 km | 7.376 | 2/10 |
| 2024-10-05 | Boundiful 12 Hours Endurance Run - 50mi SplitUnited StatesSplit of the race above; not counted again in the distance total | 50mi | 10:55:42 h | 7.363 | 2/4 |
| 2024-12-07 | 50km | 4:58:15 h | 10.059 | 10/70 | |
| 2026-01-10 | San Diego 50 Mile TrailUnited States | 50mi | 9:21:18 h | 8.602 | 21/168 |
| 2026-04-18 | 130km | 23:11:15 h | 5.606 | 16/59 |