Yoshinobu (石井美信) Ishii
External sources
Loading FFA
Loading MV
FFA diagnostics
Run “Search / refresh FFA” to see each season, HTTP response, candidate and DUV comparison.
MarathonView diagnostics
Run “Refresh MV” to see login, session validation and parser status.
Cached locally. Empty refreshes never erase the last valid snapshot.
Born : 1949
Cat. M75 Ultrarunner since 2002
14
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
38
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
Japan47,6%
Rank quotient ?This runner's calculation uses 14 eligible race(s): Σ(rank − 1) = 1 225; Σ finishers = 2 574. 1 225 / 2 574 × 100 = 47.59%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed14
Km — ultra races1 732 km
> 100 km4
> 160 km2
> 200 km2
Longest race250,0 km
21. Yamaguchi 100 Hagi-O-Kan Maranic 250 km — 2/5/2009
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 | ||||
| 27.09 | 100km | 18th Muraoka 100 km Ultra Marathon |
13:17:37 h | 310 |
| 2014 | ||||
| 28.09 | 88km | 17th Muraoka 88 km Ultra Marathon |
11:21:36 h | 46 |
| 2013 | ||||
| 29.09 | 88km | 16th Muraoka 88 km Ultra Marathon |
13:36:30 h | 139 |
| 2012 | ||||
| 30.09 | 88km | 15th Muraoka 88 km Ultra Marathon |
12:31:05 h | 80 |
| 2011 | ||||
| 25.09 | 88km | 14th Muraoka 88 km Ultra Marathon |
13:03:05 h | 105 |
| 2010 | ||||
| 26.09 | 100km | 13th Muraoka 100 km Ultra Marathon |
12:47:51 h | 98 |
| 2009 | ||||
| 02.05 | 250km | 21. Yamaguchi 100 Hagi-O-Kan Maranic 250 km |
43:15:57 h | 71 |
| 2008 | ||||
| 02.05 | 250km | 20. Yamaguchi 100 Hagi-O-Kan Maranic 250 km |
42:46:24 h | 56 |
| 2007 | ||||
| 03.05 | 140km | 19. Yamaguchi 100 Hagi-O-Kan Maranic 140 km |
22:25:25 h | 115 |
| 2006 | ||||
| 30.09 | 100km | 9th Muraoka 100 km Ultra Marathon |
11:21:58 h | 27 |
| 03.05 | 140km | 18. Yamaguchi 100 Hagi-O-Kan Maranic 140 km |
22:56:09 h | 123 |
| 2005 | ||||
| 25.09 | 100km | 8th Muraoka 100 km Ultra Marathon |
10:28:14 h | 16 |
| 2004 | ||||
| 24.09 | 100km | 7th Muraoka 100 km Ultra Marathon |
11:38:18 h | 27 |
| 2002 | ||||
| 15.09 | 100km | 2nd Tango 100 km Ultramarathon |
9:09:57 h | 26 |
| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 2/5/2009 | 21. Yamaguchi 100 Hagi-O-Kan Maranic 250 km | 250,00 | ×6 |
| ✓ 2 | 2/5/2008 | 20. Yamaguchi 100 Hagi-O-Kan Maranic 250 km | 250,00 | ×6 |
| ✓ 3 | 3/5/2007 | 19. Yamaguchi 100 Hagi-O-Kan Maranic 140 km | 140,00 | ×3 |
| ✓ 4 | 3/5/2006 | 18. Yamaguchi 100 Hagi-O-Kan Maranic 140 km | 140,00 | ×3 |
| ✓ 5 | 27/9/2015 | 18th Muraoka 100 km Ultra Marathon | 100,00 | ×2 |
| ✓ 6 | 26/9/2010 | 13th Muraoka 100 km Ultra Marathon | 100,00 | ×2 |
| ✓ 7 | 30/9/2006 | 9th Muraoka 100 km Ultra Marathon | 100,00 | ×2 |
| ✓ 8 | 25/9/2005 | 8th Muraoka 100 km Ultra Marathon | 100,00 | ×2 |
| ✓ 9 | 24/9/2004 | 7th Muraoka 100 km Ultra Marathon | 100,00 | ×2 |
| ✓ 10 | 15/9/2002 | 2nd Tango 100 km Ultramarathon | 100,00 | ×2 |
| ✓ 11 | 28/9/2014 | 17th Muraoka 88 km Ultra Marathon | 88,00 | ×2 |
| ✓ 12 | 29/9/2013 | 16th Muraoka 88 km Ultra Marathon | 88,00 | ×2 |
| ✓ 13 | 30/9/2012 | 15th Muraoka 88 km Ultra Marathon | 88,00 | ×2 |
| ✓ 14 | 25/9/2011 | 14th Muraoka 88 km Ultra Marathon | 88,00 | ×2 |