Masahiro (名取将大) Natori
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Born : 1995
Cat. M23 Ultrarunner since 2015
18
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
34
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
3
Countries visited ?Japan
South Korea
Switzerland
JapanSouth KoreaSwitzerland9,4%
Rank quotient ?This runner's calculation uses 18 eligible race(s): Σ(rank − 1) = 1 402; Σ finishers = 14 866. 1 402 / 14 866 × 100 = 9.43%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed20
Km — ultra races1 435 km
> 100 km4
> 160 km1
Longest race167,0 km
8th Ultra-Trail Mt. Fuji (UTMF) — 21/4/2023
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Trail93,0%
Stage7,0%
Wins & podiums (ultra)
🏆 Win1
🏆 Win M1
🏅 Top 35
🏅 Top 3 M5
Longest winning streak1
Current streak0
Records
HISTORY
18 race(s)| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 21/4/2023 | 8th Ultra-Trail Mt. Fuji (UTMF) | 167,00 | ×4 |
| ✓ 2 | 20/11/2022 | 8th FunTrails100K Round | 106,00 | ×3 |
| ✓ 3 | 20/6/2026 | 2nd Kaga Spa by UTMB - Kaga Spa Trail Endurance100 | 105,00 | ×3 |
| ✓ 4 | 10/6/2023 | 3rd Okushinano 100 | 100,80 | ×2 |
| ✓ 5 | 1/9/2017 | 2nd DMZ Ultra Trail 100 km Stage Race | 100,00 | ×2 |
| ✓ 6 | 28/4/2018 | 5th Shizuoka to Yamanashi (STY) | 92,00 | ×2 |
| ✓ 7 | 10/12/2017 | 4th Izu Trail Journey | 71,70 | ×2 |
| ✓ 8 | 12/10/2025 | 33th Hasetsune Cup - Japan Mountain Endurance Race | 71,50 | ×2 |
| ✓ 9 | 9/10/2022 | 30th Hasetsune Cup - Japan Mountain Endurance Race | 71,50 | ×2 |
| ✓ 10 | 7/10/2018 | 26th Hasetsune Cup - Japan Mountain Endurance Race | 71,50 | ×2 |
| ✓ 11 | 31/10/2015 | 23rd Hasetsune Cup - Japan Mountain Endurance Race | 71,50 | ×2 |
| ✓ 12 | 25/6/2022 | 1st Deep Japan Ultra 100 - 70 km | 70,00 | ×2 |
| ✓ 13 | 13/12/2020 | 7th Izu Trail Journey | 66,00 | ×1 |
| ✓ 14 | 27/5/2018 | 3rd Osorakan-Trail | 65,00 | ×1 |
| ✓ 15 | 30/8/2018 | 4ème Orsières-Champex-Chamonix (OCC) | 55,00 | ×1 |
| ✓ 16 | 27/5/2017 | 9th OSJ Okukuji Trail 50k | 50,00 | ×1 |
| ✓ 17 | 5/3/2017 | 8th OSJ Jungle Trail 50K Amami | 50,00 | ×1 |
| ✓ 18 | 20/11/2016 | 1st Minami Alps Mountain Marathon | 50,00 | ×1 |