Hideyuki (納谷英行) Naya
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Born : 1973
Cat. M50 Ultrarunner since 2015
9
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
25
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
Japan61,5%
Rank quotient ?This runner's calculation uses 9 eligible race(s): Σ(rank − 1) = 3 717; Σ finishers = 6 043. 3 717 / 6 043 × 100 = 61.51%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed9
Km — ultra races778 km
> 100 km1
Longest race103,0 km
6th Tojinbo 103 km Ultramarathon — 27/5/2017
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Road84,2%
Trail15,8%
Records
HISTORY
9 race(s)| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 27/5/2017 | 6th Tojinbo 103 km Ultramarathon | 103,00 | ×4 |
| ✓ 2 | 13/10/2024 | 15th Echigo Kubikino 100km Ultramarathon | 100,00 | ×4 |
| ✓ 3 | 9/6/2019 | 8th Hida Takayama 100 km Ultramarathon | 100,00 | ×4 |
| ✓ 4 | 9/9/2018 | 6th 100 km Ultramarathon Hakusan-Shirakawago | 100,00 | ×4 |
| ✓ 5 | 18/10/2015 | 21st River Shimanto 100km | 100,00 | ×4 |
| ✓ 6 | 13/9/2015 | 3rd 100 km Ultramarathon Hakusan-Shirakawago | 100,00 | ×4 |
| ✓ 7 | 6/10/2019 | 5th Gasando Trail running race | 73,00 | ×2 |
| ✓ 8 | 25/5/2019 | 8th Tojinbo 52 km Ultramarathon | 52,00 | ×2 |
| ✓ 9 | 4/11/2018 | 5th Nakanoto Treasure Trail Run Festival | 50,00 | ×2 |