Krijn Kroezen

Born : 1969 Cat. M55 Ultrarunner since 1991

DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.

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

Countries visited ?

Belgium

France

Germany

Italy

Netherlands

South Africa

4,1%

Rank quotient ?This runner's calculation uses 22 eligible race(s): Σ(rank − 1) = 1 394; Σ finishers = 34 280. 1 394 / 34 280 × 100 = 4.07%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed22

Km — ultra races1 719 km

Longest race100,0 km

27. IAU 100km EC Winschoten — 14/9/2002

Km per year (ultra races)

2022

2023

2024

2025

2026

Race types (share of distance)

Road90,0%

Trail10,0%

Wins & podiums (ultra)

🏆 Win0

🏆 Win M0

🏅 Top 32

🏅 Top 3 M2

Longest winning streak0

Current streak0

Records

50 km3h33'47 100 km7h26'32 6 h78,17 km 12 h55,59 km

HISTORY

23 race(s) · 1 split(s) nested

Date		Race	Perf.	Rk
2008
15.06	50km	13e Rondje Voorne 50 km	3:46:41 h	2 🥈
2002
14.09	50km	27. IAU 100km EC Winschoten - 50km Split	3:44:12 h	40
14.09	100km	27. IAU 100km EC Winschoten	7:47:10 h	34
25.08	50km	De Vijftig van Gouda - Testloop	3:42:36 h	3 🥉
17.06	87km road race	77th Comrades Marathon - Up Run	7:25:28 h	498
11.05	100km	15ème Les 100 km de Vendée	8:04:17 h	11
24.03	50km	11. 50 km Lauf Eschollbrücken	3:40:43 h	7
2001
18.08	12h	12 uur Ultramarathon Cranendonck	55.585 km	22
17.02	50km	De 50 km van Zolder	3:36:52 h	18
2000
30.12	50km	50 km Soerendonck (Fat Ass Fifty)	3:33:47 h	4
29.04	100km	IAU 100km EC Belves (100 km du Périgord Noir)	8:14:49 h	39
29.04	100km	24ème Open race at IAU 100km EC Belves (100 km du Périgord Noir)	8:14:49 h	55
1998
12.09	100km	23. RUN Winschoten 100 km	7:53:05 h	20
16.06	87km	73rd Comrades Marathon - Up Run	6:48:23 h	157
1997
13.09	100km	IAU 100km WC (RUN Winschoten 100 km)	7:26:32 h	45
13.09	100km	22. RUN Winschoten 100 km - open race	7:26:32 h	43
31.05	100km	IAU 100km EC Firenze (25^ 100 km del Passatore)	7:58:16 h	34
26.04	6h	De Zes Uren van Gistel	52.379 km	65
1996
14.09	100km	21. RUN Winschoten 100 km	8:06:16 h	7
17.06	87km	71st Comrades Marathon - Up Run	6:56:21 h	290
03.03	6h	1ste Zes uurs ultraloop Stein	78.168 km	6
03.03	50km	1ste Zes uurs ultraloop Stein - 50km Split	3:50:23 h	9
1995
12.11	61km	18e Ultraloop om de Haarlemmermeer	4:13:59 h	6
1991
10.11	61km	14e Schipholloop	4:57:26 h	50

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Runner	Races in common

DUV-index calculation details

#	Date	Race	Credited km	DUV-index+
✓ 1	14/9/2002	27. IAU 100km EC Winschoten	100,00	×3
✓ 2	11/5/2002	15ème Les 100 km de Vendée	100,00	×3
✓ 3	29/4/2000	IAU 100km EC Belves (100 km du Périgord Noir)	100,00	×3
✓ 4	12/9/1998	23. RUN Winschoten 100 km	100,00	×3
✓ 5	13/9/1997	IAU 100km WC (RUN Winschoten 100 km)	100,00	×3
✓ 6	31/5/1997	IAU 100km EC Firenze (25^ 100 km del Passatore)	100,00	×3
✓ 7	14/9/1996	21. RUN Winschoten 100 km	100,00	×3
✓ 8	17/6/2002	77th Comrades Marathon - Up Run (RSA)	87,00	×2
✓ 9	16/6/1998	73rd Comrades Marathon - Up Run	87,00	×2
✓ 10	17/6/1996	71st Comrades Marathon - Up Run	87,00	×2
✓ 11	3/3/1996	1ste Zes uurs ultraloop Stein	78,17	×2
✓ 12	12/11/1995	18e Ultraloop om de Haarlemmermeer	61,00	×1
✓ 13	10/11/1991	14e Schipholloop	61,00	×1
✓ 14	18/8/2001	12 uur Ultramarathon Cranendonck	55,59	×1
✓ 15	26/4/1997	De Zes Uren van Gistel	52,38	×1
✓ 16	15/6/2008	13e Rondje Voorne 50 km	50,00	×1
✓ 17	25/8/2002	De Vijftig van Gouda - Testloop	50,00	×1
✓ 18	24/3/2002	11. 50 km Lauf Eschollbrücken	50,00	×1
✓ 19	17/2/2001	De 50 km van Zolder	50,00	×1
✓ 20	30/12/2000	50 km Soerendonck (Fat Ass Fifty)	50,00	×1