Takenori (藤井武則) Fujii
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15
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
40
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
38,1%
Rank quotient ?This runner's calculation uses 15 eligible race(s): Σ(rank − 1) = 1 898; Σ finishers = 4 988. 1 898 / 4 988 × 100 = 38.05%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed15
Km — ultra races1 808 km
> 100 km10
> 160 km3
Longest race165,0 km
4th Deep Japan Ultra 100 - 165 km — 27/6/2025
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Trail100,0%
Records
HISTORY
15 race(s)| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 27/6/2025 | 4th Deep Japan Ultra 100 - 165 km | 165,00 | ×4 |
| ✓ 2 | 14/9/2024 | 16th Shinetsu Five Mountains Trail 100 mile | 163,10 | ×4 |
| ✓ 3 | 13/9/2025 | 17th Shinetsu Five Mountains Trail 100 mile | 162,20 | ×4 |
| ✓ 4 | 17/5/2025 | 2nd Amagase Trail 160 km | 160,00 | ×4 |
| ✓ 5 | 12/4/2025 | 1st Tokai Peninsura Giant Trail 100 | 160,00 | ×4 |
| ✓ 6 | 28/12/2025 | 6th Kyoto Great Round 130 km | 130,00 | ×3 |
| ✓ 7 | 29/12/2024 | 5th Kyoto Great Round 130 km | 130,00 | ×3 |
| ✓ 8 | 25/1/2025 | 4th Nara Ishibutai 100 - 120km | 120,00 | ×3 |
| ✓ 9 | 4/11/2023 | 3rd OSJ Kami 100 | 112,00 | ×2 |
| ✓ 10 | 8/6/2024 | 4th Okushinano 100 | 100,80 | ×2 |
| ✓ 11 | 27/1/2024 | 3rd Nara Ishibutai 100 | 100,00 | ×2 |
| ✓ 12 | 4/3/2023 | 1st Minonokuni Yamajiro Trail 100 | 100,00 | ×2 |
| ✓ 13 | 10/12/2023 | 10th Izu Trail Journey | 70,00 | ×1 |
| ✓ 14 | 11/12/2022 | 9th Izu Trail Journey | 70,00 | ×1 |
| ✓ 15 | 16/7/2023 | 14th Nozawa Onsen 4100D Mountain Trail | 65,00 | ×1 |