Shinya (五十棲新也) Isozumi
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Born : 1974
Cat. M50 Ultrarunner since 2015
18
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
33
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
Japan53,9%
Rank quotient ?This runner's calculation uses 18 eligible race(s): Σ(rank − 1) = 7 360; Σ finishers = 13 660. 7 360 / 13 660 × 100 = 53.88%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed18
Km — ultra races1 488 km
Longest race100,0 km
23th Tango 100 km Ultramarathon — 14/9/2025
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Road65,3%
Trail34,7%
HISTORY
18 race(s)| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 14/9/2025 | 23th Tango 100 km Ultramarathon | 100,00 | ×3 |
| ✓ 2 | 8/6/2025 | 13th Hida Takayama 100 km Ultramarathon | 100,00 | ×3 |
| ✓ 3 | 15/9/2024 | 22th Tango 100 km Ultramarathon | 100,00 | ×3 |
| ✓ 4 | 18/9/2022 | 20th Tango 100 km Ultramarathon | 100,00 | ×3 |
| ✓ 5 | 15/9/2019 | 19th Tango 100 km Ultramarathon | 100,00 | ×3 |
| ✓ 6 | 16/9/2018 | 18th Tango 100 km Ultramarathon | 100,00 | ×3 |
| ✓ 7 | 11/6/2017 | 6th Hida Takayama 100 km Ultramarathon | 100,00 | ×3 |
| ✓ 8 | 18/9/2016 | 16th Tango 100 km Ultramarathon | 100,00 | ×3 |
| ✓ 9 | 13/9/2015 | 3rd 100 km Ultramarathon Hakusan-Shirakawago | 100,00 | ×3 |
| ✓ 10 | 23/6/2018 | 4th OSJ Yamanaka Onsen Trail Run | 80,00 | ×2 |
| ✓ 11 | 6/10/2019 | 5th Gasando Trail running race | 73,00 | ×2 |
| ✓ 12 | 14/10/2018 | 4th Gasando Trail running race | 73,00 | ×2 |
| ✓ 13 | 20/5/2018 | 23th Saba Highway Ultramarathon | 72,00 | ×2 |
| ✓ 14 | 23/4/2017 | 3rd Okumikawa Power Trail | 70,00 | ×2 |
| ✓ 15 | 30/10/2016 | 2nd OSJ Yamanaka Onsen Trail Run | 70,00 | ×2 |
| ✓ 16 | 11/5/2024 | 10th Mt. Hiei Int. 50 km Trail Run | 50,00 | ×1 |
| ✓ 17 | 13/5/2023 | 9th Mt. Hiei Int. 50 km Trail Run | 50,00 | ×1 |
| ✓ 18 | 28/5/2016 | 2nd Mt. Hiei Int. 50 km Trail Run | 50,00 | ×1 |