Masaaki (小崎昌昭) Osaki
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Born : 1973
Cat. M50 Ultrarunner since 2011
15
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
Japan13,7%
Rank quotient ?This runner's calculation uses 15 eligible race(s): Σ(rank − 1) = 1 256; Σ finishers = 9 143. 1 256 / 9 143 × 100 = 13.74%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed15
Km — ultra races1 312 km
> 100 km3
Longest race140,0 km
27. Yamaguchi 100 Hagi-O-Kan Maranic 140 km — 3/5/2015
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Road70,7%
Trail29,3%
Records
HISTORY
15 race(s)| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 3/5/2015 | 27. Yamaguchi 100 Hagi-O-Kan Maranic 140 km | 140,00 | ×4 |
| ✓ 2 | 28/2/2015 | 5th Oedo Night run 112k | 112,00 | ×3 |
| ✓ 3 | 14/9/2014 | 6th Shinetsu Five Mountains Trail 110km | 110,00 | ×3 |
| ✓ 4 | 27/9/2015 | 25. Akita Nairiku 100km Marathon | 100,00 | ×3 |
| ✓ 5 | 28/9/2014 | 24. Akita Nairiku 100km Marathon | 100,00 | ×3 |
| ✓ 6 | 20/10/2013 | 2nd Noto Peninsula 100 km Ultra Marathon | 100,00 | ×3 |
| ✓ 7 | 6/7/2014 | 20th 8-Hour Endurance Race Tokorozawa | 84,40 | ×2 |
| ✓ 8 | 22/6/2015 | 22. Ultramarathon Okumusashi | 77,00 | ×2 |
| ✓ 9 | 27/7/2014 | 21. Ultramarathon Okumusashi | 77,00 | ×2 |
| ✓ 10 | 26/6/2016 | 3. Spatrail - Shima to Kusatsu | 72,70 | ×2 |
| ✓ 11 | 30/4/2011 | 21st Fuji 5 Lakes 72 km Challenge | 72,00 | ×2 |
| ✓ 12 | 9/12/2018 | 5th Izu Trail Journey | 71,70 | ×2 |
| ✓ 13 | 13/7/2019 | 10th Nozawa Onsen 4100D Mountain Trail | 65,00 | ×1 |
| ✓ 14 | 15/7/2017 | 8th Nozawa Onsen 4100D Mountain Trail | 65,00 | ×1 |
| ✓ 15 | 1/7/2017 | 23rd 8-Hour Endurance Race Tokorozawa | 64,92 | ×1 |