Ryoukichi (西巻良吉) Nishimaki
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Born : 1955
Cat. M70 Ultrarunner since 2007
14
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
39
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
Japan40,8%
Rank quotient ?This runner's calculation uses 14 eligible race(s): Σ(rank − 1) = 2 781; Σ finishers = 6 808. 2 781 / 6 808 × 100 = 40.85%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed15
Km — ultra races1 898 km
> 100 km5
> 160 km2
> 200 km2
Longest race520,0 km
12th River Road Foot Race 520 km — 30/4/2016
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Road60,9%
Trail36,3%
Stage2,8%
Records
HISTORY
15 race(s)| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 30/4/2016 | 12th River Road Foot Race 520 km | 520,00 | ×13 |
| ✓ 2 | 3/5/2014 | 10th River Road Foot Race 255 km | 255,00 | ×6 |
| ✓ 3 | 20/9/2015 | 18th Karisakatoge beyond Chichibu Run | 153,00 | ×3 |
| ✓ 4 | 14/9/2014 | 6th Shinetsu Five Mountains Trail 110km | 110,00 | ×2 |
| ✓ 5 | 15/9/2013 | 5th Shinetsu Five Mountains Trail 110km | 110,00 | ×2 |
| ✓ 6 | 3/10/2021 | 8th Naeba-Sanroku Geopark Tsunan Ultramarathon 100K | 100,00 | ×2 |
| ✓ 7 | 21/9/2009 | 1st Shinetsu Five Mountains Trail 100km | 100,00 | ×2 |
| ✓ 8 | 26/4/2013 | 2nd Shizuoka to Yamanashi (STY) | 84,00 | ×2 |
| ✓ 9 | 15/6/2014 | 1. Spatrail - Shima to Kusatsu | 81,40 | ×2 |
| ✓ 10 | 7/10/2012 | 20th Hasetsune Cup - Japan Mountain Endurance Race | 71,50 | ×1 |
| ✓ 11 | 14/10/2007 | 15th Hasetsune Cup - Japan Mountain Endurance Race | 71,50 | ×1 |
| ✓ 12 | 5/7/2026 | 13th Naeba-Sanroku Geopark Tsunan Ultramarathon 64K | 64,00 | ×1 |
| ✓ 13 | 6/7/2025 | 12th Naeba-Sanroku Geopark Tsunan Ultramarathon 64K | 64,00 | ×1 |
| ✓ 14 | 30/8/2015 | 18th Mt. Tateyama Climbathon | 60,00 | ×1 |