Jacob Guffey
ID 475236
Born : 1977 Cat. M45 Ultrarunner since 2013 USA
41
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
53
DUV-index+ ?Largest integer N such that the race distances provide at least N complete segments of N km in total. A single long race may therefore contribute several segments. See the DUV-Index tab for the detailed calculation. calculation details
1
Countries visited ?USAUnited States
45,2%
Rank quotient ?This runner's calculation uses 41 eligible race(s): Σ(rank − 1) = 1 627; Σ finishers = 3 602. 1 627 / 3 602 × 100 = 45.17%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed41
Km — ultra races4 397 km
> 100 km19
> 160 km19
Longest race170,6 km
5th Cruel Jewel 100 Mile — 19/5/2017

Km per year (ultra races)

211
2 races
2022
402
3 races
2023
372
3 races
2024
483
3 races
2025
211
2 races
2026

Race types (share of distance)

Trail96,3%
Stage3,7%

Wins & podiums (ultra)

🏆 Win0
🏆 Win M0
🏅 Top 31
🏅 Top 3 M1
Longest winning streak0
Current streak0

Records

50 km5h51'4050 mi11h22'48100 mi23h30'36

HISTORY

41 race(s)
DateRacePerf.Rk
2026
19.09 50km USA16th Table Rock 50 km Ultra 7:36:23 h71
08.05 100mi USA8th The Hellbender One Hundred 35:18:04 h148
2025
11.10 100mi USA1st Virginia Trail Running Festival 27:14:50 h57
19.09 100mi USA15th The Georgia Jewel 100 Mile Run 33:14:08 h37
09.05 100mi USA7th The Hellbender One Hundred 34:15:58 h103
2024
07.09 100mi USA13th Mogollon Monster 100 Mile 37:04:11 h81
10.05 100mi USA6th The Hellbender One Hundred 35:31:11 h56
27.01 50km USA6th South Mountains Marathons 7:17:16 h24
2023
29.09 100mi USA9th The Yeti 100 Mile Endurance Run 27:40:53 h109
12.05 100mi USA5th The Hellbender One Hundred 34:35:48 h38
25.03 50mi USA1st Mount Mitchell Heartbreaker 13:15:47 h33
2022
17.09 50km USA12th Table Rock 50 km Ultra 6:23:21 h32
06.05 100mi USA4th The Hellbender One Hundred 38:00:56 h59
2021
17.09 100mi USA9th Flagstaff to Grand Canyon Stagecoach Line 100mi 27:46:22 h32
05.06 100mi USA43rd Old Dominion 100 Mile Endurance Run 23:30:36 h24
27.02 50km USA2nd Stone Mountain Massacre 6:09:26 h7
2020
03.10 42mi USA1st Black Mountain 42 Mile Ultra Traverse 14:28:24 h5
19.09 50km USA10th Table Rock 50 km Ultra 5:51:40 h16
06.03 100mi USA3rd Chattanooga 100 Mile Trail Race 29:15:04 h39
2019
12.04 100mi USA2nd The Hellbender One Hundred 34:27:45 h48
2018
04.08 50km USA12th El Vaquero Loco 50K Mountain Race 8:19:41 h49
20.04 100mi USA1st The Hellbender One Hundred 32:50:17 h29
2017
07.10 100mi USA4th Cloudsplitter 100 - 100 Mile Run 31:36:56 h8
23.09 50km USA7th Table Rock 50 km Ultra 6:29:11 h43
19.05 106mi USA5th Cruel Jewel 100 Mile 36:31:35 h22
2016
05.11 100mi USA9th Pinhoti 100 Mile 24:55:31 h39
08.10 55km USA4th Canyon De Chelly Ultra 6:35:00 h41
01.10 50km USA5th Mount Taylor 50 km Race 6:43:42 h36
24.09 50km USA6th Table Rock 50 km Ultra 6:28:21 h31
20.05 100mi USA3rd Rock/Creek Thunder Rock 100 Mile Trail Race 26:48:39 h23
2015
24.10 100mi USA2nd Uwharrie 100 Mile Trail Run 34:20:27 h16
05.09 50mi USA10th Iron Mountain 50 Mile Trail Run 11:22:48 h56
16.05 50mi USA3rd Cruel Jewel 50 Mile 18:23:55 h23
18.04 50mi USA3rd Leatherwood Ultras 50 Mile 13:18:19 h11
2014
25.10 50mi USA5th Deadman Peaks Trail Run 13:38:16 h20
18.10 32.4mi USA4th Table Rock 32 Mile Ultra 8:45:26 h3 🥉
27.09 50km USA3rd Mount Taylor 50 km Race 6:52:03 h51
23.08 50mi USA6th Devil Mountain Ultra 50 Mile 13:23:22 h25
12.04 45mi USA3rd Cedro Peak 45 Mile Ultramarathon 11:46:59 h30
2013
16.11 50km USA4th Pass Mountain 50 km Race 6:15:13 h27
28.09 50km USA2nd Mount Taylor 50 km Race 7:00:18 h66