Jacob Visser
ID 9750
Born : 1944 Cat. M80 Ultrarunner since 1979 NED
33
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 ?NEDNetherlands
73,6%
Rank quotient ?This runner's calculation uses 33 eligible race(s): Σ(rank − 1) = 2 539; Σ finishers = 3 449. 2 539 / 3 449 × 100 = 73.62%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed33
Km — ultra races2 153 km
Longest race100,0 km
32. RUN Winschoten 100 km — 8/9/2007

Km per year (ultra races)

2022
2023
2024
2025
2026

Race types (share of distance)

Road54,0%
Trail46,0%

Records

50 km4h40'25100 km9h56'0350 mi9h17'056 h62,73 km

HISTORY

34 race(s) · 2 split(s) nested
DateRacePerf.Rk
2016
24.12 50km NEDSint Thomas 50 km Trail Run 5:56:31 h28
09.04 50km NED1. Woldberg Trail 6:14:09 h20
2014
27.12 50km NEDSint Thomas 50 km Trail Run 5:46:24 h34
13.09 50km NED39. RUN Winschoten 50 km 5:42:24 h48
2013
14.09 50km NED38. RUN Winschoten 50 km 5:16:23 h65
01.04 60km NED12e De Zestig van Texel 6:42:35 h312
16.02 50km NEDTexel Trail 6:01:49 h29
2012
08.09 50km NED37. RUN Winschoten 50 km 5:18:27 h39
2011
10.09 50km NED36. RUN Winschoten 50 km 5:06:36 h30
20.08 50km NED4. Internationale Ultraloop 50 van Assen (IAU Trophy Final) 4:40:32 h69
25.04 60km NED11e De Zestig van Texel 6:47:16 h182
2010
11.09 50km NED35. RUN Winschoten 50 km 4:49:00 h23
02.04 80.450km NEDJan Knippenberg Memorial 50 EM 9:17:05 h29
2009
12.09 50km NED34. RUN Winschoten 50 km 4:40:25 h23
29.08 50km NED50 km Monnikentocht 5:13:00 h25
13.04 60km NED10e De Zestig van Texel 6:23:21 h178
2008
13.09 50km NED33. RUN Winschoten 50 km 4:48:16 h22
2007
08.09 50km NED32. RUN Winschoten 100 km - 50km Split 4:55:00 h206
08.09 100km NED32. RUN Winschoten 100 km 10:34:45 h203
09.04 60km NED9e De Zestig van Texel 5:54:39 h104
2005
09.10 6h NEDMS 6 uur van Almere 62.732 km13
28.03 60km NED8e De Zestig van Texel 5:52:16 h130
2004
11.09 100km NED29. IAU 100km WC Winschoten 11:45:24 h201
21.08 60km NED60 km Monnikentocht 5:45:00 h6
2003
21.04 60km NED7e De Zestig van Texel 6:27:26 h129
1999
04.04 60km NED5e De Zestig van Texel 5:56:26 h89
1997
31.03 60km NED4e De Zestig van Texel 5:31:41 h42
1995
16.09 100km NED20. IAU 100km WC Winschoten 9:56:03 h179
17.04 60km NED3e De Zestig van Texel 5:29:12 h51
1993
12.04 60km NED2e De Zestig van Texel 5:41:33 h59
1984
08.09 100km NED9. RUN Winschoten 100 km 10:39:25 h58
1982
11.09 100km NED7. RUN Winschoten 100 km 10:15:41 h56
1980
13.09 100km NED5. RUN Winschoten 100 km 11:27:30 h48
1979
08.09 100km NED4. RUN Winschoten 100 km 10:03:26 h48