Kohei (内藤孝平) Naito
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Born : 1971
Cat. M55 Ultrarunner since 2015
7
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
23
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
Japan20,5%
Rank quotient ?This runner's calculation uses 7 eligible race(s): Σ(rank − 1) = 1 200; Σ finishers = 5 846. 1 200 / 5 846 × 100 = 20.53%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed7
Km — ultra races586 km
Longest race100,0 km
7th Tokyo Shibamata 100 km — 19/5/2019
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Road89,8%
Trail10,2%
Records
HISTORY
7 race(s)| Date | Race | Perf. | Rk | |
|---|---|---|---|---|
| 2020 | ||||
| 23.08 | 60km | 9th World Geopark Trail Run in Sanin Kaigan |
8:45:13 h | 17 |
| 2019 | ||||
| 19.05 | 100km | 7th Tokyo Shibamata 100 km |
11:08:46 h | 341 |
| 2018 | ||||
| 20.05 | 72km | 23th Saba Highway Ultramarathon |
7:48:20 h | 64 |
| 2017 | ||||
| 21.05 | 77km | 22th Saba Highway Ultramarathon |
8:54:39 h | 57 |
| 2016 | ||||
| 18.09 | 100km | 16th Tango 100 km Ultramarathon |
12:06:00 h | 412 |
| 22.05 | 77km | 21th Saba Highway Ultramarathon |
9:31:00 h | 94 |
| 2015 | ||||
| 20.09 | 100km | 15th Tango 100 km Ultramarathon |
10:48:35 h | 222 |
| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 19/5/2019 | 7th Tokyo Shibamata 100 km | 100,00 | ×4 |
| ✓ 2 | 18/9/2016 | 16th Tango 100 km Ultramarathon | 100,00 | ×4 |
| ✓ 3 | 20/9/2015 | 15th Tango 100 km Ultramarathon | 100,00 | ×4 |
| ✓ 4 | 21/5/2017 | 22th Saba Highway Ultramarathon | 77,00 | ×3 |
| ✓ 5 | 22/5/2016 | 21th Saba Highway Ultramarathon | 77,00 | ×3 |
| ✓ 6 | 20/5/2018 | 23th Saba Highway Ultramarathon | 72,00 | ×3 |
| ✓ 7 | 23/8/2020 | 9th World Geopark Trail Run in Sanin Kaigan | 60,00 | ×2 |