Naoyuki (佐藤直之) Sato
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Born : 1963
Cat. M60 Ultrarunner since 2010
14
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
2
Countries visited ?
Hong KongJapan
Hong KongJapan34,5%
Rank quotient ?This runner's calculation uses 14 eligible race(s): Σ(rank − 1) = 4 796; Σ finishers = 13 884. 4 796 / 13 884 × 100 = 34.54%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed14
Km — ultra races1 256 km
> 100 km1
Longest race112,0 km
22nd Fuji 5 Lakes 112 km Challenge — 22/4/2012
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Road92,0%
Trail8,0%
Records
HISTORY
14 race(s)| Date | Race | Perf. | Rk | |
|---|---|---|---|---|
| 2023 | ||||
| 24.02 | 100km | 41th Oxfam Trailwalker Hong Kong |
35:36:56 h | 1068 |
| 2019 | ||||
| 21.04 | 100km | 29th Fuji 5 Lakes 100 km Challenge |
13:06:17 h | 966 |
| 2018 | ||||
| 17.06 | 100km | 2nd Nikko 100km Ultramarathon |
12:20:53 h | 370 |
| 22.04 | 71km | 28th Fuji 5 Lakes 71 km Challenge |
8:58:18 h | 250 |
| 2017 | ||||
| 02.07 | 100km | 1st Nikko 100km Ultramarathon |
12:56:25 h | 582 |
| 23.04 | 71km | 27th Fuji 5 Lakes 71 km Challenge |
10:12:18 h | 685 |
| 2016 | ||||
| 24.04 | 71km | 26th Fuji 5 Lakes 71 km Challenge |
8:43:23 h | 241 |
| 2014 | ||||
| 20.04 | 100km | 24th Fuji 5 Lakes 100 km Challenge |
10:17:45 h | 139 |
| 2012 | ||||
| 05.08 | 77km | 19. Ultramarathon Okumusashi |
7:14:34 h | 59 |
| 22.04 | 112km | 22nd Fuji 5 Lakes 112 km Challenge |
11:34:40 h | 75 |
| 2011 | ||||
| 07.08 | 77km | 18. Ultramarathon Okumusashi |
7:14:49 h | 74 |
| 30.04 | 100km | 21st Fuji 5 Lakes 100 km Challenge |
9:36:41 h | 47 |
| 2010 | ||||
| 01.08 | 77km | 17. Ultramarathon Okumusashi |
7:45:11 h | 99 |
| 25.04 | 100km | 20th Fuji 5 Lakes 100 km Challenge |
10:59:49 h | 155 |
| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 22/4/2012 | 22nd Fuji 5 Lakes 112 km Challenge | 112,00 | ×3 |
| ✓ 2 | 24/2/2023 | 41th Oxfam Trailwalker Hong Kong | 100,00 | ×3 |
| ✓ 3 | 21/4/2019 | 29th Fuji 5 Lakes 100 km Challenge | 100,00 | ×3 |
| ✓ 4 | 17/6/2018 | 2nd Nikko 100km Ultramarathon | 100,00 | ×3 |
| ✓ 5 | 2/7/2017 | 1st Nikko 100km Ultramarathon | 100,00 | ×3 |
| ✓ 6 | 20/4/2014 | 24th Fuji 5 Lakes 100 km Challenge | 100,00 | ×3 |
| ✓ 7 | 30/4/2011 | 21st Fuji 5 Lakes 100 km Challenge | 100,00 | ×3 |
| ✓ 8 | 25/4/2010 | 20th Fuji 5 Lakes 100 km Challenge | 100,00 | ×3 |
| ✓ 9 | 5/8/2012 | 19. Ultramarathon Okumusashi | 77,00 | ×2 |
| ✓ 10 | 7/8/2011 | 18. Ultramarathon Okumusashi | 77,00 | ×2 |
| ✓ 11 | 1/8/2010 | 17. Ultramarathon Okumusashi | 77,00 | ×2 |
| ✓ 12 | 22/4/2018 | 28th Fuji 5 Lakes 71 km Challenge | 71,00 | ×2 |
| ✓ 13 | 23/4/2017 | 27th Fuji 5 Lakes 71 km Challenge | 71,00 | ×2 |
| ✓ 14 | 24/4/2016 | 26th Fuji 5 Lakes 71 km Challenge | 71,00 | ×2 |