Math Roberts
ID 2057
Born : 1962 Cat. M60 Ultrarunner since 2002 NED
31
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
45
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
4
Countries visited ?BELBelgiumJPNJapanKORSouth KoreaNEDNetherlands
18,3%
Rank quotient ?This runner's calculation uses 31 eligible race(s): Σ(rank − 1) = 488; Σ finishers = 2 666. 488 / 2 666 × 100 = 18.30%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed31
Km — ultra races2 641 km
> 100 km3
> 160 km2
> 200 km2
> 24h3
Longest race224,5 km
24 uurs ultraloop Stein — 1/4/2006

Km per year (ultra races)

2022
2023
2024
2025
2026

Race types (share of distance)

Road85,7%
Trail14,3%

Wins & podiums (ultra)

🏆 Win2
🏆 Win M2
🏅 Top 39
🏅 Top 3 M9
Longest winning streak1
Current streak0

Records

50 km3h17'02100 km8h04'136 h79,14 km24 h224,53 km

HISTORY

36 race(s) · 3 split(s) nested
DateRacePerf.Rk
2009
21.03 70km NED3e Limburgs Zwaarste 70 km 6:47:28 h5
01.03 6h NED14de Zes uurs ultraloop Stein 59.860 km99
2008
02.05 24h NED3e 24uur van Steenbergen 65.162 km35
19.04 70km NED2e Limburgs Zwaarste 70 km 6:51:01 h4
05.04 100km NEDSelf Transcencence 100km Amsterdam 9:14:15 h3 🥉
30.03 65km NED65 km Ultraloop Gilze 5:21:58 h3 🥉
2007
18.05 24h NED28e 24 uurs Apeldoorn 223.686 km2 🥈
09.04 120km NED9e De 120 van Texel 11:00:50 h5
25.03 6h NED3e Zes uur van Steenbergen 75.618 km7
17.03 68km NED1e Limburgs Zwaarste 68 km 7:27:30 h4
04.03 50km NED12de Zes uurs ultraloop Stein - 50km Split 3:53:27 h10
04.03 6h NED12de Zes uurs ultraloop Stein 72.277 km17
2006
12.11 100km NED1e AV Daventria Centennial 100 km in Deventer 8:30:58 h1 🏆
08.10 50km KORIAU 100km WC Misari/Seoul - 50km Split 3:54:33 h73
08.10 100km KORIAU 100km WC Misari/Seoul 8:04:13 h55
16.09 50km NED31. RUN Winschoten 50 km (IAU Trophy Final) 3:37:05 h14
16.06 100km BELIAU 100km EC Torhout (27. Nacht van Vlaanderen) 8:15:43 h48
20.05 6h NED6 uren van de Haarlemmermeer 66.884 km6
01.04 24h NED24 uurs ultraloop Stein 224.534 km3 🥉
05.03 6h NED2e Zes uur van Steenbergen 75.672 km3 🥉
18.02 6h BEL6 uur van Zolder 77.234 km3 🥉
2005
10.09 100km NED30. IAU 100km EC Winschoten 8:08:41 h38
28.08 50km NEDDe Vijftig van Gouda 3:41:29 h1 🏆
26.06 100km JPNIAU 100km WC Yubetsu (20. Lake Saroma 100 km Ultramarathon) 8:09:13 h42
26.06 50km JPNIAU 100km WC Yubetsu (20. Lake Saroma 100 km Ultramarathon) - 50 km Split 3:52:22 h59
06.03 6h NED10de Zes uurs ultraloop Stein 74.439 km8
13.02 50km NED50 km Soerendonck (Fat Ass Fifty) 3:39:16 h4
2004
11.09 100km NED29. IAU 100km WC Winschoten 8:10:32 h66
29.08 50km NED9e Rondje Voorne 50 km 3:35:35 h3 🥉
07.03 50km NED9de Zes uurs ultraloop Stein - 50km Split 3:45:58 h11
07.03 6h NED9de Zes uurs ultraloop Stein 79.141 km9
14.02 50km BELDe 50 km van Zolder 3:24:07 h4
2003
09.03 6h NED8de Zes uurs ultraloop Stein 76.695 km11
08.02 50km BELDe 50 km van Zolder 3:17:02 h6
2002
03.03 50km NED7de Zes uurs ultraloop Stein - 50km Split 3:52:32 h23
03.03 6h NED7de Zes uurs ultraloop Stein 77.282 km10