Nobuko (福島延子) Fukushima
External sources
Loading FFA
Loading MV
FFA diagnostics
Run “Search / refresh FFA” to see each season, HTTP response, candidate and DUV comparison.
MarathonView diagnostics
Run “Refresh MV” to see login, session validation and parser status.
Cached locally. Empty refreshes never erase the last valid snapshot.
Born : 1975
Cat. W50 Ultrarunner since 2017
16
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
32
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
Japan44,8%
Rank quotient ?This runner's calculation uses 16 eligible race(s): Σ(rank − 1) = 2 274; Σ finishers = 5 080. 2 274 / 5 080 × 100 = 44.76%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed16
Km — ultra races1 273 km
> 100 km2
Longest race102,0 km
5th Okuizumo Ultra Orochi 100km Tooashi — 13/4/2019
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Road100,0%
Wins & podiums (ultra)
🏆 Win0
🏆 Win F0
🏅 Top 30
🏅 Top 3 F1
Longest winning streak0
Current streak0
Records
HISTORY
16 race(s)| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 13/4/2019 | 5th Okuizumo Ultra Orochi 100km Tooashi | 102,00 | ×3 |
| ✓ 2 | 14/4/2018 | 4th Okuizumo Ultra Orochi 100km Tooashi | 102,00 | ×3 |
| ✓ 3 | 25/5/2025 | 31th Ebisu-Daikoku 100 km Marathon | 100,00 | ×3 |
| ✓ 4 | 26/5/2024 | 30th Ebisu-Daikoku 100 km Marathon | 100,00 | ×3 |
| ✓ 5 | 29/9/2019 | 3rd Yasaka Ultra Marathon in Hamada - 100 km | 100,00 | ×3 |
| ✓ 6 | 16/6/2019 | 14. Okinoshima 100km Ultra Marathon | 100,00 | ×3 |
| ✓ 7 | 12/5/2019 | 26th Ebisu-Daikoku 100 km Marathon | 100,00 | ×3 |
| ✓ 8 | 1/10/2017 | 1st Yasaka Ultra Marathon in Hamada - 100 km | 100,00 | ×3 |
| ✓ 9 | 20/10/2024 | 6th Yasaka Ultra Marathon in Hamada - 70 km | 65,00 | ×2 |
| ✓ 10 | 17/7/2022 | 2nd Yamaguchi Hagi Return | 65,00 | ×2 |
| ✓ 11 | 18/7/2021 | 1st Yamaguchi Hagi Return | 65,00 | ×2 |
| ✓ 12 | 12/4/2025 | 7th Okuizumo Ultra Orochi 60km Tooashi | 62,00 | ×1 |
| ✓ 13 | 15/4/2017 | 3rd Okuizumo Ultra Orochi 60km Tooashi | 62,00 | ×1 |
| ✓ 14 | 15/6/2025 | 18. Okinoshima 50km Ultra Marathon | 50,00 | ×1 |
| ✓ 15 | 16/6/2024 | 17. Okinoshima 50km Ultra Marathon | 50,00 | ×1 |
| ✓ 16 | 18/6/2023 | 16. Okinoshima 50km Ultra Marathon | 50,00 | ×1 |