Nobuyuki (大瀧伸之) Otaki
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Born : 1963
Cat. M60 Ultrarunner since 2016
15
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
Japan77,2%
Rank quotient ?This runner's calculation uses 15 eligible race(s): Σ(rank − 1) = 2 580; Σ finishers = 3 342. 2 580 / 3 342 × 100 = 77.20%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed15
Km — ultra races1 374 km
> 100 km4
> 160 km1
Longest race200,0 km
16th Little Edo Oedo 200k — 14/3/2026
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Road72,1%
Trail27,9%
HISTORY
15 race(s)| Date | Race | Perf. | Rk | |
|---|---|---|---|---|
| 2026 | ||||
| 14.03 | 200km | 16th Little Edo Oedo 200k |
34:44:04 h | 189 |
| 2025 | ||||
| 25.10 | 80km | 5. Jungle Guruguru Max - 80 km |
21:22:38 h | 42 |
| 2024 | ||||
| 01.12 | 50km | 11th Trainic world Soto-Chichibu Trail Run 50km |
10:41:37 h | 136 |
| 26.10 | 80km | 4. Jungle Guruguru Max - 80 km |
23:38:26 h | 72 |
| 2023 | ||||
| 03.12 | 51.4km | 11th Trainic world Ogose-Tokigawa Trail Run 50km |
9:12:42 h | 153 |
| 28.10 | 147km | 5th Autumn leaves in Okumusashi / Chichibu Journey run |
25:19:26 h | 145 |
| 2022 | ||||
| 30.10 | 49.6km | 10th Trainic world Ogose-Tokigawa Trail Run 50km |
9:04:28 h | 118 |
| 12.03 | 90km | 12th Little Edo 90k |
14:01:35 h | 46 |
| 2021 | ||||
| 30.10 | 146km | 3rd Autumn leaves in Okumusashi / Chichibu Journey run |
24:52:38 h | 202 |
| 27.02 | 91km | 11th Little Edo 91k |
13:25:02 h | 32 |
| 2019 | ||||
| 06.10 | 73km | 5th Gasando Trail running race |
13:46:15 h | 140 |
| 23.02 | 113km | 9th Oedo Night run 113k |
17:35:54 h | 63 |
| 2018 | ||||
| 14.11 | 58km | 3rd Myoko Ultra Run rAce 18 |
7:16:44 h | 53 |
| 2017 | ||||
| 04.11 | 45km | 2nd Myoko Ultra Run rAce 18 |
5:32:41 h | 38 |
| 2016 | ||||
| 16.10 | 100km | 22nd River Shimanto 100km |
13:44:35 h | 1166 |
| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 14/3/2026 | 16th Little Edo Oedo 200k | 200,00 | ×6 |
| ✓ 2 | 28/10/2023 | 5th Autumn leaves in Okumusashi / Chichibu Journey run | 147,00 | ×4 |
| ✓ 3 | 30/10/2021 | 3rd Autumn leaves in Okumusashi / Chichibu Journey run | 146,00 | ×4 |
| ✓ 4 | 23/2/2019 | 9th Oedo Night run 113k | 113,00 | ×3 |
| ✓ 5 | 16/10/2016 | 22nd River Shimanto 100km | 100,00 | ×3 |
| ✓ 6 | 27/2/2021 | 11th Little Edo 91k | 91,00 | ×2 |
| ✓ 7 | 12/3/2022 | 12th Little Edo 90k | 90,00 | ×2 |
| ✓ 8 | 25/10/2025 | 5. Jungle Guruguru Max - 80 km | 80,00 | ×2 |
| ✓ 9 | 26/10/2024 | 4. Jungle Guruguru Max - 80 km | 80,00 | ×2 |
| ✓ 10 | 6/10/2019 | 5th Gasando Trail running race | 73,00 | ×2 |
| ✓ 11 | 14/11/2018 | 3rd Myoko Ultra Run rAce 18 | 58,00 | ×1 |
| ✓ 12 | 3/12/2023 | 11th Trainic world Ogose-Tokigawa Trail Run 50km | 51,40 | ×1 |
| ✓ 13 | 1/12/2024 | 11th Trainic world Soto-Chichibu Trail Run 50km | 50,00 | ×1 |
| ✓ 14 | 30/10/2022 | 10th Trainic world Ogose-Tokigawa Trail Run 50km | 49,60 | ×1 |
| ✓ 15 | 4/11/2017 | 2nd Myoko Ultra Run rAce 18 | 45,00 | ×1 |