Jeff Black
ID 315475
Born : 1970 Cat. M55 Ultrarunner since 2012 USA
50
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
35,1%
Rank quotient ?This runner's calculation uses 50 eligible race(s): Σ(rank − 1) = 1 575; Σ finishers = 4 490. 1 575 / 4 490 × 100 = 35.08%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed50
Km — ultra races4 287 km
> 100 km13
> 160 km9
> 24h2
Longest race165,2 km
3rd Pulse Endurance Runs (Pickled Feet) 24 Hour — 28/3/2014

Km per year (ultra races)

377
4 races
2022
211
2 races
2023
266
3 races
2024
211
2 races
2025
135
2 races
2026

Race types (share of distance)

Road9,3%
Trail86,9%
Stage3,8%

Wins & podiums (ultra)

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

Records

50 km4h09'41100 km13h47'2050 mi9h41'03100 mi23h13'5412 h90,35 km24 h165,22 km

HISTORY

50 race(s)
DateRacePerf.Rk
2026
11.07 55km USA13th Beaverhead 55K Endurance Run 9:47:51 h82
27.06 50mi USA9th Wy’east Wonder 50 Mile Trail Race 12:32:10 h52
2025
26.09 100mi USA27th The Bear 100 Mile Endurance Run 31:17:46 h127
12.07 50km USA12th McCall Trailrunning Classic 50 km 7:58:20 h14
2024
12.10 50km USA2nd Legends Never Die 7:56:12 h20
29.06 100mi USA51st Western States 100 Mile Endurance Run 28:37:21 h204
20.04 55km USA10th Spitfire Ultra Trail Challenge 7:24:56 h8
2023
16.09 100mi USA11th Mountain Lakes 100 26:37:00 h34
12.08 50km USA1st Rock N Brew 5:50:09 h11
2022
01.10 50mi USA3rd Bogus 50 Mile Race 10:14:25 h5
23.07 100mi USA10th Standhope Ultra Challenge 100 Miles 34:15:36 h7
04.06 50mi USA9th Scout Mountain 50 Miles Ultra Trail 11:59:09 h28
16.04 55km USA8th Spitfire Ultra Trail Challenge 6:42:42 h8
2021
17.09 100mi USA9th Flagstaff to Grand Canyon Stagecoach Line 100mi 24:47:49 h19
24.07 60km USA9th Standhope Ultra Challenge 10:58:27 h28
19.06 108km USA8th River of No Return Endurance Run 108K 18:01:34 h38
2020
11.07 100km USA7th Beaverhead 100K Endurance Run 16:17:57 h57
18.01 50km USA8th Wilson Creek Frozen 50K 6:14:10 h28
2019
14.09 100mi USA8th Idaho Mountain Trail Ultra Festival (IMTUF 100) 31:40:58 h52
27.07 100km USA5th Never Summer 100k 19:11:43 h99
18.05 50km USA6th Smith Rock Ascent 50K 5:27:54 h59
27.04 50km USA10th Weiser River Trail 4:09:41 h6
2018
02.06 50mi USA5th Scout Mountain 50 Miles Ultra Trail 12:20:28 h28
06.05 50km USA1st The Durt 50km Race 7:09:49 h6
13.01 50km USA6th Wilson Creek Frozen 50K 5:54:54 h10
2017
11.11 50km USA7th Antelope Island Fall Classic 50K 5:10:09 h23
08.07 100km USA4th Beaverhead 100K Endurance Run 16:51:03 h21
17.03 100mi USA12th Antelope Island Buffalo Run 100 Mile 23:39:57 h7
2016
09.10 50km USA3rd Oregon Coast 50k 5:25:31 h28
27.08 60km USA2nd Resort to Rock 60K 7:02:20 h6
16.07 40mi USA5th McCall Trailrunning Classic 40 Mile 9:49:04 h19
18.06 108km USA3rd River of No Return Endurance Run 108K 16:26:30 h13
23.04 50km USA7th Weiser River Trail 4:12:09 h7
06.02 100mi USA24th Rocky Raccoon 100 Mile Trail Run 23:13:54 h72
2015
11.07 55km USA2nd Beaverhead 55K Endurance Run 8:17:43 h27
27.03 12h USA4th Pulse Endurance Runs (Pickled Feet) 12 Hour 90.348 km5
2014
12.07 40mi USA3rd McCall Trailrunning Classic 40 Mile 10:31:28 h23
21.06 108km USA1st River of No Return Endurance Run 108K 14:23:36 h32
10.05 50mi USA3rd Quad Rock 50 Mile 11:39:01 h71
28.03 24h USA3rd Pulse Endurance Runs (Pickled Feet) 24 Hour 165.215 km2 🥈
18.01 50km USA4th Wilson Creek Frozen 50K 5:52:20 h21
2013
21.09 60km USA1st Standhope Ultra Challenge 8:40:47 h11
27.07 50km USA6th Speedgoat 50k 8:05:52 h114
22.06 100km USA2nd Silver City 100 km Endurance Run 13:47:20 h7
19.05 50mi USA5th Sun Mountain 50 Mile Trail Races 9:41:03 h36
29.03 24h USA2nd Pulse Endurance Runs (Pickled Feet) 24 Hour 144.519 km7
19.01 50km USA3rd Wilson Creek Frozen 50K 5:58:40 h7
2012
21.10 50km USA2nd Foothills 50K Frenzy 5:13:21 h13
14.07 40mi USA1st McCall Trailrunning Classic 40 Mile 10:33:09 h14
23.06 50km USA1st Silver City 50 km Endurance Run 6:54:20 h9