Masamichi (前田将道) Maeda
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13
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
79,7%
Rank quotient ?This runner's calculation uses 13 eligible race(s): Σ(rank − 1) = 8 399; Σ finishers = 10 536. 8 399 / 10 536 × 100 = 79.72%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed13
Km — ultra races1 268 km
> 100 km1
Longest race140,0 km
29. Yamaguchi 100 Hagi-O-Kan Maranic 140 km — 3/5/2017
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Road95,4%
Trail4,6%
Records
HISTORY
13 race(s)| Date | Race | Perf. | Rk | |
|---|---|---|---|---|
| 2025 | ||||
| 03.05 | 100km | 22:51:02 h | 409 | |
| 2019 | ||||
| 20.10 | 57.8km | 11:09:10 h | 69 | |
| 15.09 | 100km | 13:52:19 h | 990 | |
| 09.06 | 100km | 13:50:31 h | 1765 | |
| 2018 | ||||
| 16.09 | 100km | 13:45:29 h | 902 | |
| 2017 | ||||
| 03.05 | 140km | 22:56:56 h | 177 | |
| 2016 | ||||
| 18.09 | 100km | 13:54:59 h | 1269 | |
| 04.05 | 70km | 9:50:03 h | 119 | |
| 2015 | ||||
| 20.09 | 100km | 13:50:00 h | 1442 | |
| 2010 | ||||
| 20.06 | 100km | 13:41:16 h | 192 | |
| 2009 | ||||
| 20.09 | 100km | 12:32:56 h | 327 | |
| 2008 | ||||
| 14.09 | 100km | 13:23:59 h | 381 | |
| 2007 | ||||
| 16.09 | 100km | 13:44:26 h | 370 | |
| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 3/5/2017 | 29. Yamaguchi 100 Hagi-O-Kan Maranic 140 km | 140,00 | ×4 |
| ✓ 2 | 3/5/2025 | 7th Sunny Okayama 100km | 100,00 | ×3 |
| ✓ 3 | 15/9/2019 | 19th Tango 100 km Ultramarathon | 100,00 | ×3 |
| ✓ 4 | 9/6/2019 | 8th Hida Takayama 100 km Ultramarathon | 100,00 | ×3 |
| ✓ 5 | 16/9/2018 | 18th Tango 100 km Ultramarathon | 100,00 | ×3 |
| ✓ 6 | 18/9/2016 | 16th Tango 100 km Ultramarathon | 100,00 | ×3 |
| ✓ 7 | 20/9/2015 | 15th Tango 100 km Ultramarathon | 100,00 | ×3 |
| ✓ 8 | 20/6/2010 | 5. Okinoshima 100km Ultra Marathon | 100,00 | ×3 |
| ✓ 9 | 20/9/2009 | 9th Tango 100 km Ultramarathon | 100,00 | ×3 |
| ✓ 10 | 14/9/2008 | 8th Tango 100 km Ultramarathon | 100,00 | ×3 |
| ✓ 11 | 16/9/2007 | 7th Tango 100 km Ultramarathon | 100,00 | ×3 |
| ✓ 12 | 4/5/2016 | 28. Yamaguchi 100 Hagi-O-Kan Maranic 70 km | 70,00 | ×2 |
| ✓ 13 | 20/10/2019 | 3rd Kohechi Trail Journey | 57,80 | ×1 |