Naruhito (佐藤成人) Sato
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Born : 1958
Cat. M65 Ultrarunner since 2006
8
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
28
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
Japan21,7%
Rank quotient ?This runner's calculation uses 8 eligible race(s): Σ(rank − 1) = 1 094; Σ finishers = 5 044. 1 094 / 5 044 × 100 = 21.69%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed8
Km — ultra races916 km
> 100 km3
> 160 km1
> 200 km1
> 24h2
Longest race270,0 km
3rd River Road Foot Race 270 km — 30/4/2007
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Road100,0%
Wins & podiums (ultra)
🏆 Win1
🏆 Win M1
🏅 Top 31
🏅 Top 3 M1
Longest winning streak1
Current streak0
Records
HISTORY
8 race(s)| Date | Race | Perf. | Rk | |
|---|---|---|---|---|
| 2016 | ||||
| 24.09 | 24h | 19. Hiratsuka 24 hour race |
134.940 km | 29 |
| 05.06 | 100km | 4th Tokyo Shibamata 100 km |
11:27:40 h | 351 |
| 2014 | ||||
| 22.11 | 60km | 1st Kiso-Sansen 60 km Ultra-Marathon |
6:14:17 h | 303 |
| 01.06 | 100km | 2nd Tokyo Shibamata 100 km |
13:07:57 h | 320 |
| 2008 | ||||
| 05.07 | 24h | 3rd Jingu Gaien 24 Hour Challenge |
100.776 km | 42 |
| 2007 | ||||
| 05.08 | 75km | 14. Ultramarathon Okumusashi |
6:48:33 h | 40 |
| 30.04 | 270km | 3rd River Road Foot Race 270 km |
43:45:00 h | 1 🏆 |
| 2006 | ||||
| 13.08 | 75km | 13. Ultramarathon Okumusashi |
6:15:25 h | 16 |
| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 30/4/2007 | 3rd River Road Foot Race 270 km | 270,00 | ×9 |
| ✓ 2 | 24/9/2016 | 19. Hiratsuka 24 hour race | 134,94 | ×4 |
| ✓ 3 | 5/7/2008 | 3rd Jingu Gaien 24 Hour Challenge | 100,78 | ×3 |
| ✓ 4 | 5/6/2016 | 4th Tokyo Shibamata 100 km | 100,00 | ×3 |
| ✓ 5 | 1/6/2014 | 2nd Tokyo Shibamata 100 km | 100,00 | ×3 |
| ✓ 6 | 5/8/2007 | 14. Ultramarathon Okumusashi | 75,00 | ×2 |
| ✓ 7 | 13/8/2006 | 13. Ultramarathon Okumusashi | 75,00 | ×2 |
| ✓ 8 | 22/11/2014 | 1st Kiso-Sansen 60 km Ultra-Marathon | 60,00 | ×2 |