Masayoshi (西川政良) Nishikawa
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Born : 1959
Cat. M65 Ultrarunner since 2005
14
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
Japan25,2%
Rank quotient ?This runner's calculation uses 14 eligible race(s): Σ(rank − 1) = 4 963; Σ finishers = 19 682. 4 963 / 19 682 × 100 = 25.22%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed14
Km — ultra races1 418 km
> 100 km4
Longest race112,0 km
22nd Fuji 5 Lakes 112 km Challenge — 22/4/2012
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Road100,0%
Records
HISTORY
14 race(s)| Date | Race | Perf. | Rk | |
|---|---|---|---|---|
| 2015 | ||||
| 28.06 | 100km | 30. Lake Saroma 100 km Ultramarathon |
10:40:45 h | 732 |
| 2014 | ||||
| 29.06 | 100km | 29. Lake Saroma 100 km Ultramarathon |
11:16:39 h | 546 |
| 2013 | ||||
| 30.06 | 100km road race | 28. Lake Saroma 100 km Ultramarathon |
11:16:13 h | 736 |
| 2012 | ||||
| 24.06 | 100km road race | 27. Lake Saroma 100 km Ultramarathon |
10:46:09 h | 613 |
| 22.04 | 112km | 22nd Fuji 5 Lakes 112 km Challenge |
12:19:25 h | 129 |
| 2011 | ||||
| 26.06 | 100km road race | 26. Lake Saroma 100 km Ultramarathon |
9:37:29 h | 223 |
| 30.04 | 112km | 21st Fuji 5 Lakes 112 km Challenge |
11:50:02 h | 79 |
| 2010 | ||||
| 27.06 | 100km | 25. Lake Saroma 100 km Ultramarathon |
10:44:12 h | 389 |
| 25.04 | 112km | 20th Fuji 5 Lakes 112 km Challenge |
12:06:54 h | 82 |
| 2009 | ||||
| 26.04 | 112km | 19th Fuji 5 Lakes 112 km Challenge |
12:42:13 h | 76 |
| 11.04 | 70km | 4th Toda Saiko 70 km |
7:26:38 h | 58 |
| 2007 | ||||
| 24.06 | 100km | 22. Lake Saroma 100 km Ultramarathon |
10:39:09 h | 498 |
| 2006 | ||||
| 25.06 | 100km | 21. Lake Saroma 100 km Ultramarathon |
10:22:49 h | 321 |
| 2005 | ||||
| 26.06 | 100km | Open Race at IAU 100km WC Yubetsu (20. Lake Saroma 100 km Ultramarathon) |
10:50:07 h | 495 |
| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 22/4/2012 | 22nd Fuji 5 Lakes 112 km Challenge | 112,00 | ×3 |
| ✓ 2 | 30/4/2011 | 21st Fuji 5 Lakes 112 km Challenge | 112,00 | ×3 |
| ✓ 3 | 25/4/2010 | 20th Fuji 5 Lakes 112 km Challenge | 112,00 | ×3 |
| ✓ 4 | 26/4/2009 | 19th Fuji 5 Lakes 112 km Challenge | 112,00 | ×3 |
| ✓ 5 | 28/6/2015 | 30. Lake Saroma 100 km Ultramarathon | 100,00 | ×3 |
| ✓ 6 | 29/6/2014 | 29. Lake Saroma 100 km Ultramarathon | 100,00 | ×3 |
| ✓ 7 | 30/6/2013 | 28. Lake Saroma 100 km Ultramarathon (JPN) | 100,00 | ×3 |
| ✓ 8 | 24/6/2012 | 27. Lake Saroma 100 km Ultramarathon (JPN) | 100,00 | ×3 |
| ✓ 9 | 26/6/2011 | 26. Lake Saroma 100 km Ultramarathon (JPN) | 100,00 | ×3 |
| ✓ 10 | 27/6/2010 | 25. Lake Saroma 100 km Ultramarathon | 100,00 | ×3 |
| ✓ 11 | 24/6/2007 | 22. Lake Saroma 100 km Ultramarathon | 100,00 | ×3 |
| ✓ 12 | 25/6/2006 | 21. Lake Saroma 100 km Ultramarathon | 100,00 | ×3 |
| ✓ 13 | 26/6/2005 | Open Race at IAU 100km WC Yubetsu (20. Lake Saroma 100 km Ultramarathon) | 100,00 | ×3 |
| ✓ 14 | 11/4/2009 | 4th Toda Saiko 70 km | 70,00 | ×2 |