Brad Birkholz
ID 111438
Born : 1968 Cat. M55 Ultrarunner since 2005 USA
50
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
50
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
36,3%
Rank quotient ?This runner's calculation uses 54 eligible race(s): Σ(rank − 1) = 1 596; Σ finishers = 4 393. 1 596 / 4 393 × 100 = 36.33%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed58
Km — ultra races4 340 km
> 100 km6
> 160 km4
> 24h1
Longest race160,9 km
16th Kettle Moraine 100 Mile Endurance Runs — 4/6/2011

Km per year (ultra races)

2022
2023
2024
59
1 race
2025
2026

Race types (share of distance)

Road2,3%
Trail90,8%
Stage6,9%

Wins & podiums (ultra)

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

Records

50 km4h51'48100 km9h30'5150 mi7h19'44100 mi24h33'5724 h58,86 km

HISTORY

54 race(s)
DateRacePerf.Rk
2025
30.08 24h USA20th Badgerland F/X 24 Hour Run 58.861 km24
2016
05.11 8h USA3rd Icebox 480 - 8 Hour Run 56.327 km53
2012
20.10 100km USA4th Wild Duluth 100 km Races 17:09:19 h17
04.02 50km USA24th John Dick Memorial Crusty 50K 5:34:40 h49
2011
10.12 100km USA9th Hellgate 100 km 16:02:19 h46
02.07 50km USA18th Afton Trail Run 50K 6:15:53 h27
18.06 50mi USA17th San Juan Solstice 50 Mile Run 12:22:57 h58
04.06 100mi USA16th Kettle Moraine 100 Mile Endurance Runs 26:11:25 h18
14.05 50mi USA30th Ice Age Trail 50 Mile Run 9:03:34 h50
23.04 50km USA4th Chippewa Moraine 50km Ultra Marathon 5:10:25 h22
09.04 100km USA5th Mad City 100K Road Race 9:30:51 h14
12.03 50mi USA7th Three Days of Syllamo 50 Mile Run 7:19:44 h53
11.03 50km USA7th Three Days of Syllamo 50 km Run 11:30:17 h37
11.03 150km/3stages USA7th Three Days of Syllamo Stage Race 21:21:08 h32
26.02 100mi USA2nd Rocky Road 100 Mile Run 25:15:26 h17
12.02 50km USA7th Run Toto Run Psycho Wyco 50K 5:56:18 h18
2010
16.10 100km USA2nd Wild Duluth 100 km Races 14:47:00 h7
10.10 50mi USA24th Glacial Trail 50 Mile Race 10:22:40 h19
10.09 100mi USA20th Superior Fall Trail Races 100 Mile 34:42:40 h19
24.07 50mi USA29th Minnesota Voyageur Trail 50 Mile Ultra 9:41:41 h26
10.07 50mi USA7th Dances with Dirt - Devil's Lake 50M Ultra 11:28:53 h32
03.07 50km USA17th Afton Trail Run 50K 5:31:52 h23
19.06 50mi USA16th San Juan Solstice 50 Mile Run 13:33:09 h86
08.04 100mi USA2nd Zumbro 100 Mile 24:33:57 h2 🥈
13.03 50mi USA6th Three Days of Syllamo 50 Mile Run 11:25:07 h6
12.03 50km USA6th Three Days of Syllamo 50 km Run 6:29:27 h15
12.03 150km/3stages USA6th Three Days of Syllamo Stage Race 17:54:35 h7
06.02 50km USA22nd John Dick Memorial Crusty 50K 6:00:23 h41
2009
17.10 100km USA1st Wild Duluth 100 km Races 14:45:00 h5
11.10 50mi USA23rd Glacial Trail 50 Mile Race 9:34:41 h10
04.07 50km USA16th Afton Trail Run 50K 5:40:46 h47
09.05 50mi USA28th Ice Age Trail 50 Mile Run 8:51:09 h35
14.03 50mi USA5th Three Days of Syllamo 50 Mile Run 10:19:37 h21
07.02 50km USA21st John Dick Memorial Crusty 50K 5:20:31 h19
2008
01.11 50mi USA26th Mountain Masochist 50 Mile Trail Run 11:28:09 h138
12.10 50mi USA22nd Glacial Trail 50 Mile Race 10:13:34 h6
21.09 50km USA5th Rock Cut Hobo 50K 5:15:40 h23
05.07 50km USA15th Afton Trail Run 50K 5:26:19 h40
21.06 50mi USA14th San Juan Solstice 50 Mile Run 13:47:47 h68
10.05 50mi USA27th Ice Age Trail 50 Mile Run 8:53:28 h33
08.03 50mi USA5th Land Between The Lakes 50 Mile Trail Run 9:30:06 h15
2007
14.10 50mi USA21st Glacial Trail 50 Mile Race 10:51:25 h19
23.09 50km USA4th Rock Cut Hobo 50K 4:51:48 h13
28.07 50mi USA26th Minnesota Voyageur Trail 50 Mile Ultra 11:39:07 h45
12.05 50mi USA26th Ice Age Trail 50 Mile Run 9:43:26 h81
10.03 50mi USA4th Land Between The Lakes 50 Mile Trail Run 9:30:18 h12
03.02 50km USA19th John Dick Memorial Crusty 50K 5:44:50 h18
2006
08.10 50mi USA20th Glacial Trail 50 Mile Race 10:26:37 h15
23.09 50km USA3rd Rock Cut Hobo 50K 4:57:37 h15
08.09 50mi USA16th Superior Fall Trail Races 50 Mile 12:15:41 h22
01.02 50km USA18th John Dick Memorial Crusty 50K 4:56:21 h16
2005
09.10 50mi USA19th Glacial Trail 50 Mile Race 9:48:00 h18
14.05 50mi USA24th Ice Age Trail 50 Mile Run 9:48:22 h83
12.02 50km USA17th John Dick Memorial Crusty 50K 5:31:14 h15