Yasuhiro (松原康浩) Matsubara
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Ultrarunner since 2010
8
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
18
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
Japan48,6%
Rank quotient ?This runner's calculation uses 8 eligible race(s): Σ(rank − 1) = 1 790; Σ finishers = 3 685. 1 790 / 3 685 × 100 = 48.58%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed8
Km — ultra races452 km
Longest race71,5 km
18th Hasetsune Cup - Japan Mountain Endurance Race — 10/10/2010
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Road62,0%
Trail38,0%
Records
HISTORY
8 race(s)| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 10/10/2010 | 18th Hasetsune Cup - Japan Mountain Endurance Race | 71,50 | ×3 |
| ✓ 2 | 29/3/2015 | 12th Mt. Rocco Cannonball Run - 56 km Speed | 56,00 | ×3 |
| ✓ 3 | 25/10/2014 | 11th Mt. Rocco Cannonball Run - 56 km Speed | 56,00 | ×3 |
| ✓ 4 | 30/3/2014 | 10th Mt. Rocco Cannonball Run - 56 km Speed | 56,00 | ×3 |
| ✓ 5 | 27/10/2013 | 9th Mt. Rocco Cannonball Run - 56 km Speed | 56,00 | ×3 |
| ✓ 6 | 24/3/2013 | 8th Mt. Rocco Cannonball Run - 56 km Speed | 56,00 | ×3 |
| ✓ 7 | 6/10/2013 | 7th Madarao Forest Trails 50km | 50,00 | ×2 |
| ✓ 8 | 7/10/2012 | 6th Madarao Forest Trails 50km | 50,00 | ×2 |