Herb Byun
ID 117771
Born : 1944 Cat. M80 Ultrarunner since 2000 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
61,6%
Rank quotient ?This runner's calculation uses 55 eligible race(s): Σ(rank − 1) = 4 331; Σ finishers = 7 036. 4 331 / 7 036 × 100 = 61.55%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed55
Km — ultra races3 329 km
Longest race80,5 km
37th Minnesota Voyageur Trail 50 Mile Ultra — 28/7/2018

Km per year (ultra races)

100
2 races
2022
100
2 races
2023
2024
2025
2026

Race types (share of distance)

Trail100,0%

Records

50 km4h45'4550 mi9h43'41

HISTORY

55 race(s)
DateRacePerf.Rk
2023
21.10 50km USA16th Surf the Murph 50 km Run 8:15:06 h43
01.07 50km USA30th Afton Trail Run 50K 7:31:54 h202
2022
22.10 50km USA15th Surf the Murph 50 km Run 7:54:55 h37
02.07 50km USA29th Afton Trail Run 50K 7:10:21 h176
2021
23.10 50km USA14th Surf the Murph 50 km Run 7:37:31 h36
03.07 50km USA28th Afton Trail Run 50K 7:17:36 h118
2019
19.10 50km USA12th Surf the Murph 50 km Run 7:44:38 h35
06.07 50km USA26th Afton Trail Run 50K 7:17:57 h203
2018
20.10 50km USA11th Surf the Murph 50 km Run 7:18:22 h41
28.07 50mi USA37th Minnesota Voyageur Trail 50 Mile Ultra 12:48:09 h271
07.07 50km USA25th Afton Trail Run 50K 7:08:05 h193
2017
21.10 50km USA10th Surf the Murph 50 km Run 8:14:13 h42
29.07 50mi USA36th Minnesota Voyageur Trail 50 Mile Ultra 13:05:51 h230
01.07 50km USA24th Afton Trail Run 50K 6:59:51 h221
2016
22.10 50km USA9th Surf the Murph 50 km Run 7:03:53 h34
30.07 50mi USA35th Minnesota Voyageur Trail 50 Mile Ultra 12:44:59 h211
02.07 50km USA23rd Afton Trail Run 50K 7:11:42 h165
2015
24.10 50km USA8th Surf the Murph 50 km Run 7:17:51 h59
25.07 50mi USA34th Minnesota Voyageur Trail 50 Mile Ultra 12:36:16 h155
04.07 50km USA22nd Afton Trail Run 50K 6:32:17 h106
2014
26.07 50mi USA33rd Minnesota Voyageur Trail 50 Mile Ultra 13:13:44 h171
2013
26.10 50km USA6th Surf the Murph 50 km Run 6:35:21 h53
27.07 50mi USA32nd Minnesota Voyageur Trail 50 Mile Ultra 14:12:14 h153
06.07 50km USA20th Afton Trail Run 50K 6:56:04 h124
2012
07.07 50km USA19th Afton Trail Run 50K 7:02:51 h161
2011
29.10 50km USA4th Surf the Murph 50 km Run 7:20:00 h48
30.07 50mi USA30th Minnesota Voyageur Trail 50 Mile Ultra 11:57:35 h80
02.07 50km USA18th Afton Trail Run 50K 8:00:38 h72
16.04 50km USA21st Trail Mix Race 5:54:47 h72
2010
30.10 50mi USA3rd Surf the Murph 50 Mile Run 10:41:00 h15
24.07 50mi USA29th Minnesota Voyageur Trail 50 Mile Ultra 11:26:37 h69
03.07 50km USA17th Afton Trail Run 50K 6:22:54 h45
17.04 50km USA20th Trail Mix Race 5:21:43 h56
2009
04.07 50km USA16th Afton Trail Run 50K 6:12:23 h72
2008
01.11 50km USA1st Surf the Murph 50 km Run 5:54:00 h10
26.07 50mi USA27th Minnesota Voyageur Trail 50 Mile Ultra 10:42:31 h41
05.07 50km USA15th Afton Trail Run 50K 6:25:24 h80
10.05 50mi USA27th Ice Age Trail 50 Mile Run 9:44:13 h66
19.04 50km USA18th Trail Mix Race 4:51:08 h29
2007
28.07 50mi USA26th Minnesota Voyageur Trail 50 Mile Ultra 10:58:34 h32
07.07 50km USA14th Afton Trail Run 50K 6:03:12 h40
2006
29.07 50mi USA25th Minnesota Voyageur Trail 50 Mile Ultra 10:31:56 h36
01.07 50km USA13th Afton Trail Run 50K 5:48:08 h21
2005
30.07 50mi USA24th Minnesota Voyageur Trail 50 Mile Ultra 10:38:43 h22
02.07 50km USA12th Afton Trail Run 50K 5:45:53 h27
2004
11.09 50mi USA14th Superior Fall Trail Races 50 Mile 12:30:12 h14
24.07 50mi USA23rd Minnesota Voyageur Trail 50 Mile Ultra 10:52:20 h36
03.07 50km USA11th Afton Trail Run 50K 5:37:47 h20
2003
06.09 50mi USA13th Superior Fall Trail Races 50 Mile 12:07:42 h18
2002
27.07 50mi USA21st Minnesota Voyageur Trail 50 Mile Ultra 10:39:27 h28
06.07 50km USA9th Afton Trail Run 50K 5:33:00 h15
2001
28.07 50mi USA20th Minnesota Voyageur Trail 50 Mile Ultra 9:43:41 h25
21.04 50km USA12th Trail Mix Race 5:13:44 h23
2000
08.07 50km USA7th Afton Trail Run 50K 5:38:43 h13
22.04 50km USA11th Trail Mix Race 4:45:45 h21