Masayoshi (木原義雅) Kihara
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Born : 1961
Cat. M65 Ultrarunner since 2009
14
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
30
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
Japan36,3%
Rank quotient ?This runner's calculation uses 14 eligible race(s): Σ(rank − 1) = 2 542; Σ finishers = 7 001. 2 542 / 7 001 × 100 = 36.31%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed14
Km — ultra races1 081 km
> 100 km1
Longest race140,0 km
26. Yamaguchi 100 Hagi-O-Kan Maranic 140 km — 3/5/2014
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Road88,8%
Trail11,2%
Records
HISTORY
14 race(s)| Date | Race | Perf. | Rk | |
|---|---|---|---|---|
| 2025 | ||||
| 28.09 | 64km | 28th Muraoka 64 km Ultra Marathon |
7:22:34 h | 232 |
| 2024 | ||||
| 29.09 | 64km | 27th Muraoka 64 km Ultra Marathon |
9:26:08 h | 162 |
| 2023 | ||||
| 24.09 | 66km | 26th Muraoka 66 km Ultra Marathon |
8:48:47 h | 78 |
| 2022 | ||||
| 29.09 | 45km | 25th Muraoka 45 km Ultra Marathon |
5:16:58 h | 356 |
| 2019 | ||||
| 29.09 | 66km | 22th Muraoka 66 km Ultra Marathon |
8:34:27 h | 63 |
| 2014 | ||||
| 03.05 | 140km | 26. Yamaguchi 100 Hagi-O-Kan Maranic 140 km |
21:45:45 h | 83 |
| 2013 | ||||
| 13.10 | 71.5km | 21st Hasetsune Cup - Japan Mountain Endurance Race |
16:24:08 h | 1003 |
| 29.09 | 66km | 16th Muraoka 66 km Ultra Marathon |
7:28:21 h | 38 |
| 26.05 | 100km | 20th Ebisu-Daikoku 100 km Marathon |
11:36:11 h | 105 |
| 2012 | ||||
| 07.10 | 50km | 6th Madarao Forest Trails 50km |
7:03:40 h | 161 |
| 21.09 | 60km | 12th Tango 60 km Ultramarathon |
6:57:29 h | 86 |
| 2011 | ||||
| 25.09 | 100km | 14th Muraoka 100 km Ultra Marathon |
11:45:41 h | 52 |
| 2010 | ||||
| 26.09 | 100km | 13th Muraoka 100 km Ultra Marathon |
12:37:28 h | 87 |
| 2009 | ||||
| 27.09 | 88km | 12th Muraoka 88 km Ultra Marathon |
11:51:30 h | 50 |
| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 3/5/2014 | 26. Yamaguchi 100 Hagi-O-Kan Maranic 140 km | 140,00 | ×4 |
| ✓ 2 | 26/5/2013 | 20th Ebisu-Daikoku 100 km Marathon | 100,00 | ×3 |
| ✓ 3 | 25/9/2011 | 14th Muraoka 100 km Ultra Marathon | 100,00 | ×3 |
| ✓ 4 | 26/9/2010 | 13th Muraoka 100 km Ultra Marathon | 100,00 | ×3 |
| ✓ 5 | 27/9/2009 | 12th Muraoka 88 km Ultra Marathon | 88,00 | ×2 |
| ✓ 6 | 13/10/2013 | 21st Hasetsune Cup - Japan Mountain Endurance Race | 71,50 | ×2 |
| ✓ 7 | 24/9/2023 | 26th Muraoka 66 km Ultra Marathon | 66,00 | ×2 |
| ✓ 8 | 29/9/2019 | 22th Muraoka 66 km Ultra Marathon | 66,00 | ×2 |
| ✓ 9 | 29/9/2013 | 16th Muraoka 66 km Ultra Marathon | 66,00 | ×2 |
| ✓ 10 | 28/9/2025 | 28th Muraoka 64 km Ultra Marathon | 64,00 | ×2 |
| ✓ 11 | 29/9/2024 | 27th Muraoka 64 km Ultra Marathon | 64,00 | ×2 |
| ✓ 12 | 21/9/2012 | 12th Tango 60 km Ultramarathon | 60,00 | ×2 |
| ✓ 13 | 7/10/2012 | 6th Madarao Forest Trails 50km | 50,00 | ×1 |
| ✓ 14 | 29/9/2022 | 25th Muraoka 45 km Ultra Marathon | 45,00 | ×1 |