Eiichi (佐藤栄一) Sato
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13
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
45,4%
Rank quotient ?This runner's calculation uses 13 eligible race(s): Σ(rank − 1) = 3 082; Σ finishers = 6 784. 3 082 / 6 784 × 100 = 45.43%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed13
Km — ultra races928 km
Longest race100,0 km
7th Tsukuba Rinrin Road 100km — 24/5/2025
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Road81,9%
Trail18,1%
Records
HISTORY
13 race(s)| Date | Race | Perf. | Rk | |
|---|---|---|---|---|
| 2025 | ||||
| 24.05 | 100km | 23:13:51 h | 192 | |
| 2019 | ||||
| 21.04 | 70km | 8:27:15 h | 60 | |
| 2018 | ||||
| 21.07 | 67.5km | 9:58:13 h | 55 | |
| 22.04 | 70km | 10:28:12 h | 197 | |
| 2017 | ||||
| 23.04 | 70km | 7:43:09 h | 39 | |
| 2016 | ||||
| 18.09 | 60km | 7:54:08 h | 447 | |
| 24.04 | 70km | 7:15:15 h | 14 | |
| 2015 | ||||
| 20.09 | 60km | 8:10:14 h | 553 | |
| 06.06 | 100km | 10:38:56 h | 178 | |
| 29.03 | 70km | 7:15:31 h | 57 | |
| 2014 | ||||
| 14.09 | 60km | 8:17:17 h | 472 | |
| 27.04 | 70km | 7:34:19 h | 33 | |
| 2013 | ||||
| 15.09 | 60km | 9:01:02 h | 798 | |
| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 24/5/2025 | 7th Tsukuba Rinrin Road 100km | 100,00 | ×3 |
| ✓ 2 | 6/6/2015 | 25th Aso Caldera Super Marathon 100 km | 100,00 | ×3 |
| ✓ 3 | 21/4/2019 | 11th 70 km Ultra Maranic Osaka | 70,00 | ×2 |
| ✓ 4 | 22/4/2018 | 10th 70 km Ultra Maranic Osaka | 70,00 | ×2 |
| ✓ 5 | 23/4/2017 | 9th 70 km Ultra Maranic Osaka | 70,00 | ×2 |
| ✓ 6 | 24/4/2016 | 8th 70 km Ultra Maranic Osaka | 70,00 | ×2 |
| ✓ 7 | 29/3/2015 | 1st Osaka Yodogawa 70 km Ultra Marathon | 70,00 | ×2 |
| ✓ 8 | 27/4/2014 | 6th 70 km Ultra Maranic Osaka | 70,00 | ×2 |
| ✓ 9 | 21/7/2018 | 6th Kirishima Ebino-kougen Extreme Trail | 67,50 | ×2 |
| ✓ 10 | 18/9/2016 | 16th Tango 60 km Ultramarathon | 60,00 | ×2 |
| ✓ 11 | 20/9/2015 | 15th Tango 60 km Ultramarathon | 60,00 | ×2 |
| ✓ 12 | 14/9/2014 | 14th Tango 60 km Ultramarathon | 60,00 | ×2 |
| ✓ 13 | 15/9/2013 | 13th Tango 60 km Ultramarathon | 60,00 | ×2 |