Shunichi (那須俊一) Nasu
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Born : 1958
Cat. M65 Ultrarunner since 2017
17
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
Japan70,5%
Rank quotient ?This runner's calculation uses 17 eligible race(s): Σ(rank − 1) = 10 267; Σ finishers = 14 558. 10 267 / 14 558 × 100 = 70.52%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed17
Km — ultra races1 371 km
> 100 km1
Longest race128,0 km
3rd Tokyo Great Race 128km — 5/11/2022
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Road96,1%
Trail3,9%
Records
HISTORY
17 race(s)| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 5/11/2022 | 3rd Tokyo Great Race 128km | 128,00 | ×3 |
| ✓ 2 | 24/9/2023 | 31. Akita Nairiku 100km Marathon | 100,00 | ×3 |
| ✓ 3 | 18/6/2023 | 16. Okinoshima 100km Ultra Marathon | 100,00 | ×3 |
| ✓ 4 | 30/6/2019 | 34. Lake Saroma 100 km Ultramarathon | 100,00 | ×3 |
| ✓ 5 | 24/6/2018 | 33. Lake Saroma 100 km Ultramarathon | 100,00 | ×3 |
| ✓ 6 | 25/6/2017 | 32. Lake Saroma 100 km Ultramarathon | 100,00 | ×3 |
| ✓ 7 | 11/3/2023 | 13th Little Edo 90k | 90,00 | ×2 |
| ✓ 8 | 5/6/2022 | 29. Ultramarathon Okumusashi | 78,00 | ×2 |
| ✓ 9 | 2/6/2019 | 26. Ultramarathon Okumusashi | 78,00 | ×2 |
| ✓ 10 | 3/6/2018 | 25. Ultramarathon Okumusashi | 78,00 | ×2 |
| ✓ 11 | 4/6/2017 | 24. Ultramarathon Okumusashi | 78,00 | ×2 |
| ✓ 12 | 25/5/2024 | 8th Yokosuka Miura 63km Michikusa Ultra Marathon B | 63,00 | ×1 |
| ✓ 13 | 21/5/2023 | 11th Tokyo Shibamata 60 km | 60,00 | ×1 |
| ✓ 14 | 22/5/2022 | 10th Tokyo Shibamata 60 km | 60,00 | ×1 |
| ✓ 15 | 9/5/2026 | 6th Kimitsu Ultra Marathon | 55,00 | ×1 |
| ✓ 16 | 31/8/2024 | 1st Sendai Ultra 50km Night Run | 53,00 | ×1 |
| ✓ 17 | 2/8/2025 | 1st Chiba Ultra Marathon 50km Night Run | 50,00 | ×1 |