Masanori (市原政則) Ichihara
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12
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
25
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
35,1%
Rank quotient ?This runner's calculation uses 12 eligible race(s): Σ(rank − 1) = 2 754; Σ finishers = 7 846. 2 754 / 7 846 × 100 = 35.10%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed12
Km — ultra races760 km
Longest race100,0 km
6th 100 km Ultramarathon Hakusan-Shirakawago — 9/9/2018
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Road100,0%
Records
HISTORY
12 race(s)| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 9/9/2018 | 6th 100 km Ultramarathon Hakusan-Shirakawago | 100,00 | ×4 |
| ✓ 2 | 7/6/2015 | 4th Hida Takayama 72 km Ultramarathon | 72,00 | ×2 |
| ✓ 3 | 27/9/2015 | 18th Muraoka 66 km Ultra Marathon | 66,00 | ×2 |
| ✓ 4 | 28/9/2014 | 17th Muraoka 66 km Ultra Marathon | 66,00 | ×2 |
| ✓ 5 | 29/9/2013 | 16th Muraoka 66 km Ultra Marathon | 66,00 | ×2 |
| ✓ 6 | 18/9/2016 | 16th Tango 60 km Ultramarathon | 60,00 | ×2 |
| ✓ 7 | 20/9/2015 | 15th Tango 60 km Ultramarathon | 60,00 | ×2 |
| ✓ 8 | 15/9/2013 | 13th Tango 60 km Ultramarathon | 60,00 | ×2 |
| ✓ 9 | 21/9/2012 | 12th Tango 60 km Ultramarathon | 60,00 | ×2 |
| ✓ 10 | 11/9/2016 | 4th 50 km Ultramarathon Hakusan-Shirakawago | 50,00 | ×2 |
| ✓ 11 | 13/9/2015 | 3rd 50 km Ultramarathon Hakusan-Shirakawago | 50,00 | ×2 |
| ✓ 12 | 21/9/2014 | 2nd 50 km Ultramarathon Hakusan-Shirakawago | 50,00 | ×2 |