Kazuo (高橋和夫) Takahashi
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10
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
29
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
1
Countries visited ?
Japan
43,0%
Rank quotient ?This runner's calculation uses 10 eligible race(s): Σ(rank − 1) = 4 832; Σ finishers = 11 234. 4 832 / 11 234 × 100 = 43.01%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed10
Km — ultra races978 km
> 100 km2
Longest race125,0 km
7th Fujisan Issyu Walking — 10/6/2023
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Road61,3%
Ult.Walk38,7%
Records
HISTORY
10 race(s)| Date | Race | Perf. | Rk | |
|---|---|---|---|---|
| 2025 | ||||
| 20.12 | 50km | 9:28:24 h | 159 | |
| 22.03 | 100km | 23:21:54 h | 107 | |
| 2024 | ||||
| 23.11 | 103km | 22:18:08 h | 83 | |
| 2023 | ||||
| 14.10 | 100km | 23:15:52 h | 41 | |
| 10.06 | 125km | 24:58:11 h | 64 | |
| 2013 | ||||
| 30.06 | 100km road race | 10:58:15 h | 636 | |
| 2012 | ||||
| 24.06 | 100km road race | 11:05:33 h | 756 | |
| 2011 | ||||
| 26.06 | 100km road race | 10:44:29 h | 547 | |
| 2007 | ||||
| 24.06 | 100km | 12:31:54 h | 1484 | |
| 2006 | ||||
| 25.06 | 100km | 12:06:44 h | 965 | |
| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 10/6/2023 | 7th Fujisan Issyu Walking | 125,00 | ×4 |
| ✓ 2 | 23/11/2024 | 3rd Kyoto Ultra Walking 110km | 103,00 | ×3 |
| ✓ 3 | 22/3/2025 | 1st Tokyo Story Ultra Walking | 100,00 | ×3 |
| ✓ 4 | 14/10/2023 | 6th Nakasendo to Kisoji Ultra Run | 100,00 | ×3 |
| ✓ 5 | 30/6/2013 | 28. Lake Saroma 100 km Ultramarathon (JPN) | 100,00 | ×3 |
| ✓ 6 | 24/6/2012 | 27. Lake Saroma 100 km Ultramarathon (JPN) | 100,00 | ×3 |
| ✓ 7 | 26/6/2011 | 26. Lake Saroma 100 km Ultramarathon (JPN) | 100,00 | ×3 |
| ✓ 8 | 24/6/2007 | 22. Lake Saroma 100 km Ultramarathon | 100,00 | ×3 |
| ✓ 9 | 25/6/2006 | 21. Lake Saroma 100 km Ultramarathon | 100,00 | ×3 |
| ✓ 10 | 20/12/2025 | 2nd One-day walking - Kanto Chiho | 50,00 | ×1 |