Norio (太秦則夫) Uzumasa
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Born : 1968
Cat. M55 Ultrarunner since 2015
16
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
Japan5,0%
Rank quotient ?This runner's calculation uses 16 eligible race(s): Σ(rank − 1) = 339; Σ finishers = 6 728. 339 / 6 728 × 100 = 5.04%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed16
Km — ultra races1 296 km
Longest race100,0 km
23th Tango 100 km Ultramarathon — 14/9/2025
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Road61,7%
Trail38,3%
Wins & podiums (ultra)
🏆 Win0
🏆 Win M0
🏅 Top 31
🏅 Top 3 M2
Longest winning streak0
Current streak0
Records
HISTORY
16 race(s)| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 14/9/2025 | 23th Tango 100 km Ultramarathon | 100,00 | ×3 |
| ✓ 2 | 21/4/2024 | 24. Okukumano 100 km Ultramarathon | 100,00 | ×3 |
| ✓ 3 | 23/4/2023 | 23. Okukumano 100 km Ultramarathon | 100,00 | ×3 |
| ✓ 4 | 18/9/2022 | 20th Tango 100 km Ultramarathon | 100,00 | ×3 |
| ✓ 5 | 8/5/2022 | 26th 100 km Ultramarathon Ako Seaside Park | 100,00 | ×3 |
| ✓ 6 | 15/9/2019 | 19th Tango 100 km Ultramarathon | 100,00 | ×3 |
| ✓ 7 | 18/9/2016 | 16th Tango 100 km Ultramarathon | 100,00 | ×3 |
| ✓ 8 | 20/9/2015 | 15th Tango 100 km Ultramarathon | 100,00 | ×3 |
| ✓ 9 | 12/5/2018 | 4th Mt. Hiei Int. 50 Mile Trail Run | 80,47 | ×2 |
| ✓ 10 | 21/8/2022 | 11th World Geopark Trail Run in Sanin Kaigan | 60,00 | ×1 |
| ✓ 11 | 21/11/2021 | 10th World Geopark Trail Run in Sanin Kaigan | 60,00 | ×1 |
| ✓ 12 | 23/8/2020 | 9th World Geopark Trail Run in Sanin Kaigan | 60,00 | ×1 |
| ✓ 13 | 15/7/2019 | 8th World Geopark Trail Run in Sanin Kaigan | 60,00 | ×1 |
| ✓ 14 | 9/7/2017 | 6th World Geopark Trail Run in Sanin Kaigan | 60,00 | ×1 |
| ✓ 15 | 20/10/2019 | 3rd Kohechi Trail Journey | 57,80 | ×1 |
| ✓ 16 | 14/10/2018 | 2nd Kohechi Trail Journey | 57,80 | ×1 |