Shouzou (岡昭三) Oka
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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
60,3%
Rank quotient ?This runner's calculation uses 17 eligible race(s): Σ(rank − 1) = 2 458; Σ finishers = 4 074. 2 458 / 4 074 × 100 = 60.33%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed17
Km — ultra races1 427 km
> 100 km1
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)
Road86,0%
Trail14,0%
Records
HISTORY
17 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 | 25/6/2006 | 6th Nichinan Orochi 100 km Marathon | 100,00 | ×3 |
| ✓ 3 | 26/6/2005 | 5th Nichinan Orochi 100 km Marathon | 100,00 | ×3 |
| ✓ 4 | 25/9/2016 | 19th Muraoka 88 km Ultra Marathon | 88,00 | ×2 |
| ✓ 5 | 27/9/2015 | 18th Muraoka 88 km Ultra Marathon | 88,00 | ×2 |
| ✓ 6 | 28/9/2014 | 17th Muraoka 88 km Ultra Marathon | 88,00 | ×2 |
| ✓ 7 | 29/9/2013 | 16th Muraoka 88 km Ultra Marathon | 88,00 | ×2 |
| ✓ 8 | 30/9/2012 | 15th Muraoka 88 km Ultra Marathon | 88,00 | ×2 |
| ✓ 9 | 25/9/2011 | 14th Muraoka 88 km Ultra Marathon | 88,00 | ×2 |
| ✓ 10 | 26/9/2010 | 13th Muraoka 88 km Ultra Marathon | 88,00 | ×2 |
| ✓ 11 | 28/9/2008 | 11th Muraoka 88 km Ultra Marathon | 88,00 | ×2 |
| ✓ 12 | 29/9/2007 | 10th Muraoka 88 km Ultra Marathon | 88,00 | ×2 |
| ✓ 13 | 25/9/2005 | 8th Muraoka 88 km Ultra Marathon | 88,00 | ×2 |
| ✓ 14 | 23/9/2003 | 6th Muraoka 88 km Ultra Marathon | 88,00 | ×2 |
| ✓ 15 | 12/4/2025 | 7th Okuizumo Ultra Orochi 60km Tooashi | 62,00 | ×1 |
| ✓ 16 | 19/6/2022 | 15. Okinoshima 50km Ultra Marathon | 50,00 | ×1 |
| ✓ 17 | 29/9/2022 | 25th Muraoka 45 km Ultra Marathon | 45,00 | ×1 |