Guffey, Jacob
United StatesManBorn 19772013 – 2026Runner id 475236
Events
40
2013 – 2026
Best pace
8.531
km/h · 2020
Best finish
3rd
of 22 · 2014
Distance raced
4,347
km · splits not double-counted
Pace over time
km/h · higher is faster
Pace over time: 40 races from 2013 to 2026, ranging from 4.23 to 8.94 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
| Date | Event | Distance | Result | Pace km/h | Placing |
|---|---|---|---|---|---|
| 2013-09-28 | 50km | 7:00:18 h | 7.138 | 66/138 | |
| 2013-11-16 | 50km | 6:15:13 h | 7.995 | 27/56 | |
| 2014-04-12 | 45mi | 11:46:59 h | 6.146 | 30/42 | |
| 2014-08-23 | Devil Mountain Ultra 50 MileUnited States | 50mi | 13:23:22 h | 6.010 | 25/37 |
| 2014-09-27 | 50km | 6:52:03 h | 7.281 | 51/156 | |
| 2014-10-18 | 32.4mi | 8:45:26 h | 5.954 | 3/22 | |
| 2014-10-25 | 50mi | 13:38:16 h | 5.900 | 20/29 | |
| 2015-04-18 | 50mi | 13:18:19 h | 6.048 | 11/19 | |
| 2015-05-16 | 50mi | 18:23:55 h | 4.374 | 23/38 | |
| 2015-09-05 | 50mi | 11:22:48 h | 7.071 | 56/77 | |
| 2015-10-24 | 100mi | 34:20:27 h | 4.686 | 16/22 | |
| 2016-05-20 | 100mi | 26:48:39 h | 6.003 | 23/47 | |
| 2016-09-24 | 50km | 6:28:21 h | 7.725 | 31/177 | |
| 2016-10-01 | 50km | 6:43:42 h | 7.431 | 36/157 | |
| 2016-10-08 | 55km | 6:35:00 h | 8.354 | 41/130 | |
| 2016-11-05 | 100mi | 24:55:31 h | 6.457 | 39/147 | |
| 2017-05-19 | 106mi | 36:31:35 h | 4.670 | 22/77 | |
| 2017-09-23 | 50km | 6:29:11 h | 7.708 | 43/245 | |
| 2017-10-07 | 100mi | 31:36:56 h | 5.090 | 8/32 | |
| 2018-04-20 | 100mi | 32:50:17 h | 4.901 | 29/74 | |
| 2018-08-04 | 50km | 8:19:41 h | 6.004 | 49/102 | |
| 2019-04-12 | 100mi | 34:27:45 h | 4.670 | 48/69 | |
| 2020-03-06 | 100mi | 29:15:04 h | 5.502 | 39/67 | |
| 2020-09-19 | 50km | 5:51:40 h | 8.531 | 16/103 | |
| 2020-10-03 | 42mi | 14:28:24 h | 4.670 | 5/17 | |
| 2021-02-27 | 50km | 6:09:26 h | 8.121 | 7/20 | |
| 2021-06-05 | 100mi | 23:30:36 h | 6.845 | 24/49 | |
| 2021-09-17 | 100mi | 27:46:22 h | 5.795 | 32/67 | |
| 2022-05-06 | 100mi | 38:00:56 h | 4.233 | 59/67 | |
| 2022-09-17 | 50km | 6:23:21 h | 7.826 | 32/184 | |
| 2023-03-25 | 50mi | 13:15:47 h | 6.067 | 33/66 | |
| 2023-05-12 | 100mi | 34:35:48 h | 4.652 | 38/78 | |
| 2023-09-29 | 100mi | 27:40:53 h | 5.814 | 109/146 | |
| 2024-01-27 | 50km | 7:17:16 h | 6.861 | 24/49 | |
| 2024-05-10 | 100mi | 35:31:11 h | 4.531 | 56/95 | |
| 2024-09-07 | 100mi | 37:04:11 h | 4.341 | 81/106 | |
| 2025-05-09 | 100mi | 34:15:58 h | 4.697 | 103/137 | |
| 2025-09-19 | 100mi | 33:14:08 h | 4.842 | 37/49 | |
| 2025-10-11 | 100mi | 27:14:50 h | 5.906 | 57/87 | |
| 2026-05-08 | 100mi | 35:18:04 h | 4.559 | 148/175 |