Dennis Straathof
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Born : 1976
Cat. M50 Ultrarunner since 2017
7
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
20
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
2
Countries visited ?
AustriaNetherlands
AustriaNetherlands74,1%
Rank quotient ?This runner's calculation uses 7 eligible race(s): Σ(rank − 1) = 570; Σ finishers = 769. 570 / 769 × 100 = 74.12%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed7
Km — ultra races503 km
> 100 km2
Longest race112,0 km
7 Petranpad Ultra Run 112k — 2/5/2026
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Trail100,0%
Records
HISTORY
7 race(s)| Date | Race | Perf. | Rk | |
|---|---|---|---|---|
| 2026 | ||||
| 02.05 | 112km | 7 Petranpad Ultra Run 112k |
14:46:00 h | 18 |
| 2025 | ||||
| 23.11 | 60km | 7. Graef Castricum Trail Ultra 60km |
6:30:23 h | 20 |
| 17.05 | 101km | Salomon Koning van Spanje Trail - 101km |
15:33:02 h | 46 |
| 2022 | ||||
| 20.11 | 60km | Graef Castricum Trail Ultra 60km |
6:28:34 h | 16 |
| 2021 | ||||
| 14.11 | 60km | Graef Castricum Trail Ultra 60km |
6:16:07 h | 11 |
| 04.07 | 60km | Veluwezoomtrail Ultra60 |
7:57:17 h | 65 |
| 2017 | ||||
| 22.07 | 50km | Grossglockner Trail |
10:59:53 h | 401 |
| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 2/5/2026 | 7 Petranpad Ultra Run 112k | 112,00 | ×5 |
| ✓ 2 | 17/5/2025 | Salomon Koning van Spanje Trail - 101km | 101,00 | ×5 |
| ✓ 3 | 23/11/2025 | 7. Graef Castricum Trail Ultra 60km | 60,00 | ×3 |
| ✓ 4 | 20/11/2022 | Graef Castricum Trail Ultra 60km | 60,00 | ×3 |
| ✓ 5 | 14/11/2021 | Graef Castricum Trail Ultra 60km | 60,00 | ×3 |
| ✓ 6 | 4/7/2021 | Veluwezoomtrail Ultra60 | 60,00 | ×3 |
| ✓ 7 | 22/7/2017 | Grossglockner Trail | 50,00 | ×2 |