Hideaki (吉川英明) Yoshikawa
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Born : 1973
Cat. M50 Ultrarunner since 2015
14
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
Japan53,5%
Rank quotient ?This runner's calculation uses 14 eligible race(s): Σ(rank − 1) = 4 197; Σ finishers = 7 852. 4 197 / 7 852 × 100 = 53.45%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed14
Km — ultra races870 km
> 100 km1
Longest race100,8 km
5th Okushinano 100 — 7/6/2025
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Trail100,0%
HISTORY
14 race(s)| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 7/6/2025 | 5th Okushinano 100 | 100,80 | ×4 |
| ✓ 2 | 14/10/2023 | 3. Jungle Guruguru Max - 80 km | 80,00 | ×3 |
| ✓ 3 | 23/9/2017 | 4th SkyView Ultra-Trail 60 - Yamada Noboru Memorial Cup | 75,00 | ×3 |
| ✓ 4 | 12/10/2025 | 33th Hasetsune Cup - Japan Mountain Endurance Race | 71,50 | ×2 |
| ✓ 5 | 7/10/2018 | 26th Hasetsune Cup - Japan Mountain Endurance Race | 71,50 | ×2 |
| ✓ 6 | 8/10/2017 | 25th Hasetsune Cup - Japan Mountain Endurance Race | 71,50 | ×2 |
| ✓ 7 | 10/9/2023 | 1st Around Toki River | 54,00 | ×2 |
| ✓ 8 | 19/11/2016 | 2nd FunTrails50K Two Lakes&Green line | 52,00 | ×2 |
| ✓ 9 | 11/5/2025 | 6th FunTrails Round Minano | 51,00 | ×2 |
| ✓ 10 | 1/12/2024 | 11th Trainic world Soto-Chichibu Trail Run 50km | 50,00 | ×2 |
| ✓ 11 | 12/6/2016 | 3rd Trainic world Hanno-Ogose Trail Run 50km | 50,00 | ×2 |
| ✓ 12 | 8/5/2016 | 4th Trainic world Chichibu Trail Run 50km | 49,80 | ×1 |
| ✓ 13 | 15/6/2024 | 3rd KTF Trail running race - Rockin Bear | 48,00 | ×1 |
| ✓ 14 | 4/7/2015 | 5th Utsukushigahara 45 km Trail Run | 45,00 | ×1 |