Dirk Westerduin
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Born : 1961
Cat. M65 Ultrarunner since 1993
9
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
25
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
3
Countries visited ?
Belgium
GermanyNetherlands
BelgiumGermanyNetherlands9,4%
Rank quotient ?This runner's calculation uses 9 eligible race(s): Σ(rank − 1) = 62; Σ finishers = 663. 62 / 663 × 100 = 9.35%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed9
Km — ultra races739 km
> 100 km2
Longest race125,4 km
10. Internat. 12 Stunden Lauf Brühl — 9/7/1995
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Road51,0%
Trail49,0%
Wins & podiums (ultra)
🏆 Win1
🏆 Win M1
🏅 Top 31
🏅 Top 3 M1
Longest winning streak1
Current streak0
HISTORY
9 race(s) · 3 split(s) nested| Date | Race | Perf. | Rk | |
|---|---|---|---|---|
| 1999 | ||||
| 07.03 | 6h | 4de Zes uurs ultraloop Stein |
71.180 km | 21 |
| 07.03 | 50km | 4de Zes uurs ultraloop Stein - 50km Split | 3:46:37 h | 11 |
| 1997 | ||||
| 31.03 | 120km | 4e De 120 van Texel |
9:23:30 h | 1 🏆 |
| 1996 | ||||
| 14.09 | 100km | 21. RUN Winschoten 100 km |
7:19:47 h | 5 |
| 12.05 | 6h | De Zes Uren van Gistel |
80.519 km | 6 |
| 1995 | ||||
| 12.11 | 61km | 18e Ultraloop om de Haarlemmermeer |
4:21:55 h | 8 |
| 09.07 | 12h | 10. Internat. 12 Stunden Lauf Brühl |
125.356 km | 6 |
| 09.07 | 50km | 10. Internat. 12 Stunden Lauf Brühl - 50km Split | 4:28:15 h | 20 |
| 09.07 | 100km | 10. Internat. 12 Stunden Lauf Brühl - 100km Split | 9:24:33 h | 6 |
| 17.04 | 60km | 3e De Zestig van Texel |
4:17:38 h | 7 |
| 1994 | ||||
| 13.11 | 61km | 17e Ultraloop om de Haarlemmermeer |
4:22:36 h | 5 |
| 1993 | ||||
| 12.04 | 60km | 2e De Zestig van Texel |
4:24:51 h | 12 |
| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 9/7/1995 | 10. Internat. 12 Stunden Lauf Brühl | 125,36 | ×5 |
| ✓ 2 | 31/3/1997 | 4e De 120 van Texel | 120,00 | ×4 |
| ✓ 3 | 14/9/1996 | 21. RUN Winschoten 100 km | 100,00 | ×4 |
| ✓ 4 | 12/5/1996 | De Zes Uren van Gistel | 80,52 | ×3 |
| ✓ 5 | 7/3/1999 | 4de Zes uurs ultraloop Stein | 71,18 | ×2 |
| ✓ 6 | 12/11/1995 | 18e Ultraloop om de Haarlemmermeer | 61,00 | ×2 |
| ✓ 7 | 13/11/1994 | 17e Ultraloop om de Haarlemmermeer | 61,00 | ×2 |
| ✓ 8 | 17/4/1995 | 3e De Zestig van Texel | 60,00 | ×2 |
| ✓ 9 | 12/4/1993 | 2e De Zestig van Texel | 60,00 | ×2 |