Takuya (島崎琢也) Shimazaki
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Born : 1966
Cat. M60 Ultrarunner since 2013
17
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
41
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
Japan14,9%
Rank quotient ?This runner's calculation uses 17 eligible race(s): Σ(rank − 1) = 1 838; Σ finishers = 12 374. 1 838 / 12 374 × 100 = 14.85%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed17
Km — ultra races2 107 km
> 100 km9
> 160 km4
> 200 km1
> 24h4
Longest race209,5 km
13. Tokyo Challenge 24 hours — 21/6/2014
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Road80,6%
Trail19,4%
Wins & podiums (ultra)
🏆 Win2
🏆 Win M2
🏅 Top 32
🏅 Top 3 M2
Longest winning streak1
Current streak0
HISTORY
17 race(s)| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 21/6/2014 | 13. Tokyo Challenge 24 hours | 209,47 | ×5 |
| ✓ 2 | 17/12/2016 | 11th Jingu Gaien 24 Hour Challenge | 185,92 | ×4 |
| ✓ 3 | 25/4/2025 | 10th Ultra-Trail Mt. Fuji (UTMF) | 167,00 | ×4 |
| ✓ 4 | 12/9/2015 | 14. Green Charity Marathon Tokyo - Hard Run 24H | 161,20 | ×3 |
| ✓ 5 | 11/4/2026 | 5th Yagurazawa Round Trip Pre-Tournament | 160,00 | ×3 |
| ✓ 6 | 24/9/2016 | 19. Hiratsuka 12 hour race | 134,94 | ×3 |
| ✓ 7 | 16/4/2023 | 33th Fuji 5 Lakes 118 km Challenge | 118,00 | ×2 |
| ✓ 8 | 23/4/2017 | 27th Fuji 5 Lakes 118 km Challenge | 118,00 | ×2 |
| ✓ 9 | 21/6/2025 | 20th Green Charity Marathon Tokyo - Hard Run 24H | 110,90 | ×2 |
| ✓ 10 | 1/6/2024 | 1st Gran Trail Minakami - 100km | 100,00 | ×2 |
| ✓ 11 | 19/5/2019 | 7th Tokyo Shibamata 100 km | 100,00 | ×2 |
| ✓ 12 | 3/6/2018 | 6th Tokyo Shibamata 100 km | 100,00 | ×2 |
| ✓ 13 | 5/6/2016 | 4th Tokyo Shibamata 100 km | 100,00 | ×2 |
| ✓ 14 | 6/6/2015 | 3rd Tokyo Shibamata 100 km | 100,00 | ×2 |
| ✓ 15 | 1/6/2013 | 1st Tokyo Shibamata 100 km | 100,00 | ×2 |
| ✓ 16 | 8/10/2023 | 31th Hasetsune Cup - Japan Mountain Endurance Race | 71,50 | ×1 |
| ✓ 17 | 11/12/2022 | 9th Izu Trail Journey | 70,00 | ×1 |