Takeshi (葛原健士) Kasahara
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Born : 1964
Cat. M60 Ultrarunner since 2015
14
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
30
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
Japan58,6%
Rank quotient ?This runner's calculation uses 14 eligible race(s): Σ(rank − 1) = 5 673; Σ finishers = 9 676. 5 673 / 9 676 × 100 = 58.63%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed14
Km — ultra races1 075 km
> 100 km1
> 24h1
Longest race132,6 km
24th 24-hour relay & solo marathon Kobe — 17/8/2024
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Road100,0%
Records
HISTORY
14 race(s)| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 17/8/2024 | 24th 24-hour relay & solo marathon Kobe | 132,60 | ×4 |
| ✓ 2 | 28/6/2026 | 41. Lake Saroma 100 km Ultramarathon | 100,00 | ×3 |
| ✓ 3 | 29/6/2025 | 40. Lake Saroma 100 km Ultramarathon | 100,00 | ×3 |
| ✓ 4 | 30/6/2024 | 39. Lake Saroma 100 km Ultramarathon | 100,00 | ×3 |
| ✓ 5 | 21/5/2023 | 11th Tokyo Shibamata 100 km | 100,00 | ×3 |
| ✓ 6 | 23/4/2023 | 14th 70 km Ultra Maranic Osaka | 70,00 | ×2 |
| ✓ 7 | 3/7/2022 | 28th 8-Hour Endurance Race Tokorozawa | 63,70 | ×2 |
| ✓ 8 | 29/6/2019 | 25th 8-Hour Endurance Race Tokorozawa | 63,70 | ×2 |
| ✓ 9 | 30/5/2026 | 10th Yokosuka Miura 63km Michikusa Ultra Marathon | 63,00 | ×2 |
| ✓ 10 | 25/5/2024 | 8th Yokosuka Miura 63km Michikusa Ultra Marathon B | 63,00 | ×2 |
| ✓ 11 | 1/7/2023 | 29th 8-Hour Endurance Race Tokorozawa | 58,80 | ×1 |
| ✓ 12 | 2/7/2016 | 22nd 8-Hour Endurance Race Tokorozawa | 58,43 | ×1 |
| ✓ 13 | 12/7/2015 | 21st 8-Hour Endurance Race Tokorozawa | 52,69 | ×1 |
| ✓ 14 | 1/7/2017 | 23rd 8-Hour Endurance Race Tokorozawa | 48,69 | ×1 |