Fredrick Klewin
ID 91957
Born : 1953 Cat. M70 Ultrarunner since 1989 USA
37
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
40
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
46,3%
Rank quotient ?This runner's calculation uses 37 eligible race(s): Σ(rank − 1) = 2 965; Σ finishers = 6 404. 2 965 / 6 404 × 100 = 46.30%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed37
Km — ultra races2 449 km
> 100 km1
> 160 km1
Longest race160,9 km
4th Vermont 100 Mile Endurance Race — 25/7/1992

Km per year (ultra races)

2022
2023
2024
2025
2026

Race types (share of distance)

Trail100,0%

Records

50 km5h06'5450 mi7h53'30100 mi18h46'34

HISTORY

37 race(s)
DateRacePerf.Rk
2016
09.10 50km USA30th Glacial Trail 50 km Race 8:37:02 h118
14.05 50km USA35th Ice Age Trail 50 km Run 7:33:25 h177
2015
08.11 31.2mi USA3rd tBunk Endurance Challenge 50 km 6:56:27 h11
09.05 50km USA34th Ice Age Trail 50 km Run 7:36:31 h160
2014
09.11 31.2mi USA2nd tBunk Endurance Challenge 50 km 7:13:34 h29
12.10 50km USA28th Glacial Trail 50 km Race 8:31:01 h114
2013
13.10 50km USA27th Glacial Trail 50 km Race 7:48:13 h110
2012
15.09 50mi USA5th Endurance Challenge - Wisconsin Trail 50 Miles 11:44:58 h177
2010
18.09 50km USA3rd Endurance Challenge - Wisconsin Trail 50 km 6:31:44 h111
08.05 50mi USA29th Ice Age Trail 50 Mile Run 11:38:20 h203
2009
24.10 50km USA2nd Endurance Challenge - Wisconsin Trail 50 km 6:29:28 h149
09.05 50mi USA28th Ice Age Trail 50 Mile Run 11:39:16 h184
2008
25.10 50km USA1st Endurance Challenge - Wisconsin Trail 50 km 6:35:01 h94
10.05 50km USA27th Ice Age Trail 50 km Run 6:51:32 h91
2007
12.05 50km USA26th Ice Age Trail 50 km Run 7:05:09 h106
2006
08.10 50km USA20th Glacial Trail 50 km Race 6:41:13 h64
13.05 50mi USA25th Ice Age Trail 50 Mile Run 11:32:05 h208
2005
09.10 50km USA19th Glacial Trail 50 km Race 5:58:00 h39
2004
10.10 50km USA18th Glacial Trail 50 km Race 5:38:09 h21
08.05 50mi USA23th Ice Age Trail 50 Mile Run 9:40:54 h83
2003
12.10 50km USA17th Glacial Trail 50 km Race 6:08:23 h36
2002
07.12 50mi USA13th Sunmart Texas Trails 50 Mile 9:12:15 h75
13.10 50km USA16th Glacial Trail 50 km Race 5:14:56 h7
11.05 50mi USA21th Ice Age Trail 50 Mile Run 9:42:43 h91
2001
10.05 50mi USA20th Ice Age Trail 50 Mile Run 8:28:09 h35
2000
01.10 50km USA14th Glacial Trail 50 km Race 5:06:54 h19
13.05 50mi USA19th Ice Age Trail 50 Mile Run 8:35:59 h71
1999
26.09 50km USA13th Glacial Trail 50 km Race 5:25:13 h16
08.05 50mi USA18th Ice Age Trail 50 Mile Run 8:52:28 h88
1998
16.05 50mi USA17th Ice Age Trail 50 Mile Run 9:07:03 h81
1997
05.10 50km USA11th Glacial Trail Run 50 km 5:08:28 h14
1996
18.05 50mi USA15th Ice Age Trail 50 Mile Run 8:57:15 h19
1994
21.05 50mi USA13th Ice Age Trail 50 Mile Run 8:07:11 h18
1993
15.05 50mi USA12th Ice Age Trail 50 Mile Run 8:31:41 h54
1992
25.07 100mi USA4th Vermont 100 Mile Endurance Race 18:46:34 h21
16.05 50mi USA11th Ice Age Trail 50 Mile Run 7:53:30 h16
1989
20.05 50mi USA8th Ice Age Trail 50 Mile Run 9:05:33 h92