Hiroshi (柏崎洋) Kashiwazaki
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17
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
34,9%
Rank quotient ?This runner's calculation uses 17 eligible race(s): Σ(rank − 1) = 3 279; Σ finishers = 9 397. 3 279 / 9 397 × 100 = 34.89%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed17
Km — ultra races1 462 km
> 100 km2
Longest race115,0 km
1st Miyagi Yumeguri Ultra Marathon - 115 km — 2/9/2017
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Road90,2%
Trail9,8%
Records
HISTORY
17 race(s)| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 2/9/2017 | 1st Miyagi Yumeguri Ultra Marathon - 115 km | 115,00 | ×3 |
| ✓ 2 | 27/5/2017 | 6th Tojinbo 103 km Ultramarathon | 103,00 | ×3 |
| ✓ 3 | 12/6/2022 | 16th Iwate Ginga 100km Marathon Challenge | 100,00 | ×3 |
| ✓ 4 | 20/10/2019 | 25th River Shimanto 100km | 100,00 | ×3 |
| ✓ 5 | 16/12/2018 | 3rd Okinawa 100km Ultramarathon | 100,00 | ×3 |
| ✓ 6 | 2/7/2017 | 1st Nikko 100km Ultramarathon | 100,00 | ×3 |
| ✓ 7 | 15/10/2016 | 7th Inagawa 100km Ultra-Marathon | 100,00 | ×3 |
| ✓ 8 | 29/5/2016 | 23rd Ebisu-Daikoku 100 km Marathon | 100,00 | ×3 |
| ✓ 9 | 17/1/2016 | 26th Miyako 100 km Ultramarathon | 100,00 | ×3 |
| ✓ 10 | 12/10/2014 | 10th Echigo Kubikino 100km Ultramarathon | 100,00 | ×3 |
| ✓ 11 | 21/4/2013 | 23rd Fuji 5 Lakes 100 km Challenge | 100,00 | ×3 |
| ✓ 12 | 22/6/2015 | 22. Ultramarathon Okumusashi | 77,00 | ×2 |
| ✓ 13 | 30/9/2018 | 5th Naeba-Sanroku Geopark Tsunan Ultramarathon 64K | 64,00 | ×1 |
| ✓ 14 | 25/9/2025 | 7th Aga Ultra Marathon - 60km | 60,00 | ×1 |
| ✓ 15 | 13/11/2016 | 8th Kanna Mountain Run | 50,00 | ×1 |
| ✓ 16 | 14/6/2025 | 4th KTF Trail running race - Rockin Bear | 48,00 | ×1 |
| ✓ 17 | 4/7/2015 | 5th Utsukushigahara 45 km Trail Run | 45,00 | ×1 |