Mark Switala
ID 117768
Born : 1960 Cat. M65 Ultrarunner since 1991 USA
36
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
25,8%
Rank quotient ?This runner's calculation uses 36 eligible race(s): Σ(rank − 1) = 1 430; Σ finishers = 5 547. 1 430 / 5 547 × 100 = 25.78%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed36
Km — ultra races4 173 km
> 100 km16
> 160 km16
Longest race160,9 km
13th Superior Fall Trail Races 100 Mile — 6/9/2003

Km per year (ultra races)

2022
2023
2024
2025
2026

Race types (share of distance)

Trail100,0%

Wins & podiums (ultra)

🏆 Win0
🏆 Win M0
🏅 Top 33
🏅 Top 3 M4
Longest winning streak0
Current streak0

Records

50 km5h20'09100 km11h00'1150 mi7h51'20100 mi20h05'59

HISTORY

36 race(s)
DateRacePerf.Rk
2018
12.05 50mi USA37th Ice Age Trail 50 Mile Run 10:50:31 h171
2013
11.05 50mi USA32nd Ice Age Trail 50 Mile Run 10:12:28 h138
2012
12.05 50km USA31st Ice Age Trail 50 km Run 5:20:09 h26
2010
08.05 50mi USA29th Ice Age Trail 50 Mile Run 8:58:48 h39
2008
10.05 50mi USA27th Ice Age Trail 50 Mile Run 8:58:16 h37
2007
12.05 50mi USA26th Ice Age Trail 50 Mile Run 8:36:32 h33
2006
13.05 50mi USA25th Ice Age Trail 50 Mile Run 8:29:56 h28
2005
14.05 50mi USA24th Ice Age Trail 50 Mile Run 8:38:10 h28
2003
06.09 100mi USA13th Superior Fall Trail Races 100 Mile 28:35:30 h3 🥉
2002
11.05 50mi USA21th Ice Age Trail 50 Mile Run 8:47:42 h35
2001
08.09 100mi USA11th Superior Fall Trail Races 100 Mile 29:39:00 h12
02.06 100mi USA6th Kettle Moraine 100 Mile Endurance Run 21:15:00 h6
10.05 50mi USA20th Ice Age Trail 50 Mile Run 8:14:56 h27
2000
09.09 100mi USA10th Superior Fall Trail Races 100 Mile 26:17:08 h5
02.06 100mi USA5th Kettle Moraine 100 Mile Endurance Run 22:42:05 h19
13.05 50mi USA19th Ice Age Trail 50 Mile Run 7:51:20 h35
1999
04.06 100mi USA4th Kettle Moraine 100 Mile Endurance Run 21:31:41 h9
1998
19.09 100mi USA8th Superior Fall Trail Races 100 Mile 23:20:06 h2 🥈
05.06 100mi USA3rd Kettle Moraine 100 Mile Endurance Run 20:05:59 h7
16.05 50mi USA17th Ice Age Trail 50 Mile Run 8:32:22 h48
1997
20.09 100mi USA7th Superior Fall Trail Races 100 Mile 24:21:50 h8
06.06 100mi USA2nd Kettle Moraine 100 Mile Endurance Run 20:52:21 h10
17.05 50mi USA16th Ice Age Trail 50 Mile Run 7:58:02 h32
1996
21.09 100mi USA6th Superior Fall Trail Races 100 Mile 26:38:15 h13
07.06 100mi USA1st Kettle Moraine 100 Mile Endurance Run 21:37:09 h13
18.05 50mi USA15th Ice Age Trail 50 Mile Run 10:50:21 h109
1995
09.09 100km USA1st Dances with Dirt - Hell 100K Ultra 11:00:11 h2 🥈
1994
03.09 100mi USA4th Superior Fall Trail Races 100 Mile 27:15:33 h16
21.05 50mi USA13th Ice Age Trail 50 Mile Run 9:28:37 h78
1993
10.09 100mi USA3rd Superior Fall Trail Races 100 Mile 32:13:34 h42
15.05 50mi USA12th Ice Age Trail 50 Mile Run 9:27:16 h123
1992
04.09 100mi USA2nd Superior Fall Trail Races 100 Mile 32:22:23 h31
20.06 100mi USA3rd Mohican Trail 100 Mile 28:10:00 h38
16.05 50mi USA11th Ice Age Trail 50 Mile Run 8:51:09 h46
1991
07.09 50mi USA8th Groundhog Fall 50 Mile Endurance Run 8:16:58 h23
18.05 50mi USA10th Ice Age Trail 50 Mile Run 10:39:49 h174