Jan Suijkerbuijk
ID 2553
Born : 1963 Cat. M60 Ultrarunner since 2000 NED
39
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
6
Countries visited ?AUTAustriaBELBelgiumCZECzechiaGREGreeceITAItalyNEDNetherlands
36,0%
Rank quotient ?This runner's calculation uses 43 eligible race(s): Σ(rank − 1) = 1 474; Σ finishers = 4 099. 1 474 / 4 099 × 100 = 35.96%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed43
Km — ultra races4 143 km
> 100 km10
> 160 km5
> 200 km5
> 24h11
> 48h1
Longest race245,3 km
30. Spartathlon — 28/9/2012

Km per year (ultra races)

2022
2023
60
1 race
2024
2025
114
1 race
2026

Race types (share of distance)

Road85,7%
Trail11,6%
Elim.2,8%

Wins & podiums (ultra)

🏆 Win4
🏆 Win M4
🏅 Top 310
🏅 Top 3 M10
Longest winning streak1
Current streak0

Records

50 km3h26'48100 km8h27'1950 mi7h12'506 h76,15 km12 h51,56 km24 h215,13 kmBackyard17 loops

HISTORY

52 race(s) · 3 split(s) nested
DateRacePerf.Rk
2026
20.03 Backyard Ultra NEDDutch Backyard Ultra 114.002 km (17h)73
2024
24.03 60km NED17e De Zestig van Texel 6:07:46 h270
2020
19.09 12h NEDDe 12 Uur van Deventer 51.560 km23
2018
08.09 50km NED43. RUN Winschoten 100km - 50km Split 4:17:54 h14
08.09 100km NED43. RUN Winschoten 100 km - Nederlands Kampioenschap 8:42:24 h3 🥉
08.09 100km NED43. RUN Winschoten 100km - open race 8:42:24 h7
16.06 6h NED6 Uurs Estafette Den Haag 74.599 km1 🏆
04.03 6h NED23e Zes uurs ultraloop Stein 67.601 km7
2016
18.06 6h NED6 Uurs Estafette Den Haag 73.469 km1 🏆
14.05 50km NED6. 50 km UltraRun van Gieten 3:26:48 h2 🥈
2015
20.06 6h NED6 Uurs Estafette Den Haag 50.247 km11
2014
13.09 100km NED39. RUN Winschoten 100 km - Nederlands Kampioenschap 8:27:19 h3 🥉
13.09 50km NED39. RUN Winschoten 100 km - 50km Split 4:00:51 h4
13.09 100km NED39. RUN Winschoten 100 km 8:27:19 h5
28.06 6h BEL1. 6h Ultraloop Maasmechelen 76.150 km1 🏆
09.03 6h NED19de Zes uurs ultraloop Stein 74.796 km7
2013
03.03 6h NED18de Zes uurs ultraloop Stein 70.939 km27
2012
28.09 245.3km GRE30. Spartathlon 33:49:03 h35
2010
08.05 24h NED5e 24uur van Steenbergen 215.129 km2 🥈
02.04 80.450km NEDJan Knippenberg Memorial 50 EM 7:12:50 h6
07.03 6h NED15de Zes uurs ultraloop Stein 70.657 km33
2008
02.03 6h NED13de Zes uurs ultraloop Stein 70.157 km22
2007
18.05 24h NED28e 24 uurs Apeldoorn 61.151 km53
09.04 120km NED9e De 120 van Texel 12:09:26 h12
04.03 50km NED12de Zes uurs ultraloop Stein - 50km Split 4:23:36 h37
04.03 6h NED12de Zes uurs ultraloop Stein 67.256 km29
2006
23.09 100km ITAIAU 24h EC Verona (12^ Lupatotissima 24 ore) - 100km Split 11:29:23 h29
23.09 24h ITAIAU 24h EC Verona (12^ Lupatotissima 24 ore) 142.701 km29
01.04 24h NED24 uurs ultraloop Stein 77.616 km64
2005
16.07 24h AUTIAU 24h EC Wörschach 209.483 km36
16.07 24h AUTIAU 24h WC Wörschach 209.483 km50
06.05 24h NED26e 24 uurs Apeldoorn 90.899 km39
28.03 60km NED8e De Zestig van Texel 5:06:16 h32
06.03 6h NED10de Zes uurs ultraloop Stein 50.000 km150
13.02 50km NED50 km Soerendonck (Fat Ass Fifty) 3:59:27 h11
2004
23.10 6h CZEIAU 24h WC Brno - 6h Split 59.679 km93
23.10 12h CZEIAU 24h WC Brno - 12h Split 109.865 km94
23.10 24h CZEIAU 24h EC Brno 136.992 km105
23.10 24h CZEIAU 24h WC Brno 136.992 km125
29.08 50km NEDDe Vijftig van Gouda 4:10:22 h6
2003
11.10 12h NEDOpen race at IAU 24h WC & EC Uden - 12h Split 107.543 km105
11.10 24h NEDOpen race at IAU 24h WC & EC Uden 206.660 km5
13.09 100km NED28. RUN Winschoten 100 km 8:53:39 h15
21.06 6h NED6 Uur Den Haag 72.408 km1 🏆
21.04 60km NED7e De Zestig van Texel 4:31:09 h3 🥉
09.03 6h NED8de Zes uurs ultraloop Stein 75.405 km15
2002
20.10 50km NED50 km ultraloop Stein 3:38:38 h3 🥉
14.09 50km NED27. IAU 100km EC Winschoten - 50km Split 4:08:51 h68
14.09 100km NED27. IAU 100km EC Winschoten 8:42:27 h59
03.03 50km NED7de Zes uurs ultraloop Stein - 50km Split 4:08:07 h40
03.03 6h NED7de Zes uurs ultraloop Stein 71.207 km29
2000
09.09 100km NED25. IAU 100km WC Winschoten 8:52:09 h107