Junji (成田純) Narita
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Born : 1965
Cat. M60 Ultrarunner since 2015
17
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
40
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
Japan48,9%
Rank quotient ?This runner's calculation uses 17 eligible race(s): Σ(rank − 1) = 4 379; Σ finishers = 8 958. 4 379 / 8 958 × 100 = 48.88%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed17
Km — ultra races1 968 km
> 100 km11
> 160 km1
Longest race200,0 km
9th Ultra Walking around Lake Biwa — 2/5/2026
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Road70,8%
Ult.Walk29,2%
Wins & podiums (ultra)
🏆 Win0
🏆 Win M0
🏅 Top 31
🏅 Top 3 M1
Longest winning streak0
Current streak0
Records
HISTORY
17 race(s)| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 2/5/2026 | 9th Ultra Walking around Lake Biwa | 200,00 | ×5 |
| ✓ 2 | 7/6/2025 | 9th Fujisan Issyu Walking | 125,00 | ×3 |
| ✓ 3 | 10/6/2023 | 7th Fujisan Issyu Walking | 125,00 | ×3 |
| ✓ 4 | 11/6/2022 | 6th Fujisan Issyu Walking | 125,00 | ×3 |
| ✓ 5 | 16/4/2023 | 33th Fuji 5 Lakes 118 km Challenge | 118,00 | ×2 |
| ✓ 6 | 7/10/2019 | 1st Fuji 5 Lakes 118 km Autumn Challenge | 118,00 | ×2 |
| ✓ 7 | 21/4/2019 | 29th Fuji 5 Lakes 118 km Challenge | 118,00 | ×2 |
| ✓ 8 | 23/4/2017 | 27th Fuji 5 Lakes 118 km Challenge | 118,00 | ×2 |
| ✓ 9 | 24/4/2016 | 26th Fuji 5 Lakes 118 km Challenge | 118,00 | ×2 |
| ✓ 10 | 21/2/2026 | 1st Lake Hamana and the Enshu Tokaido Ultra | 105,00 | ×2 |
| ✓ 11 | 13/7/2024 | 4th Nihondaira and Suruganokuni Ultra Run | 105,00 | ×2 |
| ✓ 12 | 17/5/2026 | 32th Yatsugatake Nobeyama 100 km | 100,00 | ×2 |
| ✓ 13 | 18/5/2025 | 31th Yatsugatake Nobeyama 100 km | 100,00 | ×2 |
| ✓ 14 | 1/2/2025 | 5th Nihondaira and Suruganokuni Ultra Run | 100,00 | ×2 |
| ✓ 15 | 19/5/2024 | 30th Yatsugatake Nobeyama 100 km | 100,00 | ×2 |
| ✓ 16 | 19/4/2015 | 25th Fuji 5 Lakes 100 km Challenge | 100,00 | ×2 |
| ✓ 17 | 25/2/2023 | 3rd Nihondaira and Suruganokuni Ultra Run | 93,00 | ×2 |