Roel Keizer

Born : 1951 Cat. M75 Ultrarunner since 1993

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

Netherlands

14,0%

Rank quotient ?This runner's calculation uses 15 eligible race(s): Σ(rank − 1) = 119; Σ finishers = 849. 119 / 849 × 100 = 14.02%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed15

Km — ultra races1 445 km

> 100 km4

> 160 km2

> 200 km2

> 24h2

Longest race222,1 km

19e 24 uurs Apeldoorn — 22/5/1998

Km per year (ultra races)

2022

2023

2024

2025

2026

Race types (share of distance)

Road60,5%

Trail39,5%

Wins & podiums (ultra)

🏆 Win2

🏆 Win M2

🏅 Top 35

🏅 Top 3 M5

Longest winning streak1

Current streak0

Records

50 km3h22'07 100 km8h14'48 50 mi6h06'38 6 h75,92 km 12 h122,59 km 24 h222,14 km

HISTORY

15 race(s) · 1 split(s) nested

Date		Race	Perf.	Rk
1999
14.05	24h	20e 24 uurs Apeldoorn	214.300 km	3 🥉
04.04	120km	5e De 120 van Texel	10:26:27 h	2 🥈
1998
12.09	100km	23. RUN Winschoten 100 km	8:14:48 h	26
22.05	24h	19e 24 uurs Apeldoorn	222.143 km	3 🥉
12.04	80km	Jan Knippenberg Memorial 50 EM	6:06:38 h	1 🏆
28.03	6h	6 uur van Zolder	75.922 km	8
01.03	6h	3de Zes uurs ultraloop Stein	64.854 km	51
01.03	50km	3de Zes uurs ultraloop Stein - 50km Split	3:38:59 h	8
1997
05.10	6h	6h Ultraloop Amersfoort	74.460 km	4
19.07	12h	3de 12 Uur Geldrop	122.591 km	5
18.05	80km	Jan Knippenberg Memorial 50 EM	7:04:53 h	5
31.03	60km	4e De Zestig van Texel	4:25:46 h	5
1995
20.05	50km	11e Eemlake Run (Eemmeerloop)	3:22:07 h	1 🏆
17.04	60km	3e De Zestig van Texel	4:17:19 h	6
1993
14.11	61km	16e Ultraloop om de Haarlemmermeer	4:21:00 h	8
12.04	60km	2e De Zestig van Texel	4:17:31 h	6

Filter

Runner	Races in common

DUV-index calculation details

#	Date	Race	Credited km	DUV-index+
✓ 1	22/5/1998	19e 24 uurs Apeldoorn	222,14	×6
✓ 2	14/5/1999	20e 24 uurs Apeldoorn	214,30	×6
✓ 3	19/7/1997	3de 12 Uur Geldrop	122,59	×3
✓ 4	4/4/1999	5e De 120 van Texel	120,00	×3
✓ 5	12/9/1998	23. RUN Winschoten 100 km	100,00	×2
✓ 6	12/4/1998	Jan Knippenberg Memorial 50 EM	80,00	×2
✓ 7	18/5/1997	Jan Knippenberg Memorial 50 EM	80,00	×2
✓ 8	28/3/1998	6 uur van Zolder	75,92	×2
✓ 9	5/10/1997	6h Ultraloop Amersfoort	74,46	×2
✓ 10	1/3/1998	3de Zes uurs ultraloop Stein	64,85	×1
✓ 11	14/11/1993	16e Ultraloop om de Haarlemmermeer	61,00	×1
✓ 12	31/3/1997	4e De Zestig van Texel	60,00	×1
✓ 13	17/4/1995	3e De Zestig van Texel	60,00	×1
✓ 14	12/4/1993	2e De Zestig van Texel	60,00	×1
✓ 15	20/5/1995	11e Eemlake Run (Eemmeerloop)	50,00	×1