Koichi (先名弘一) Sakina
External sources
Loading FFA
Loading MV
FFA diagnostics
Run “Search / refresh FFA” to see each season, HTTP response, candidate and DUV comparison.
MarathonView diagnostics
Run “Refresh MV” to see login, session validation and parser status.
Cached locally. Empty refreshes never erase the last valid snapshot.
Born : 1956
Cat. M70 Ultrarunner since 2013
16
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
30
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
Japan37,4%
Rank quotient ?This runner's calculation uses 16 eligible race(s): Σ(rank − 1) = 4 398; Σ finishers = 11 766. 4 398 / 11 766 × 100 = 37.38%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed16
Km — ultra races1 175 km
Longest race100,0 km
1st Okinawa 100km Ultramarathon — 18/12/2016
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Road91,4%
Trail8,6%
HISTORY
16 race(s)| Date | Race | Perf. | Rk | |
|---|---|---|---|---|
| 2025 | ||||
| 19.10 | 70km | 32. Ultramarathon Okumusashi |
8:42:15 h | 206 |
| 2024 | ||||
| 20.10 | 70km | 31. Ultramarathon Okumusashi |
8:13:41 h | 197 |
| 2023 | ||||
| 04.06 | 78km | 30. Ultramarathon Okumusashi |
9:41:14 h | 340 |
| 2022 | ||||
| 03.07 | 8h | 28th 8-Hour Endurance Race Tokorozawa |
58.800 km | 121 |
| 05.06 | 78km | 29. Ultramarathon Okumusashi |
8:34:50 h | 229 |
| 2019 | ||||
| 02.06 | 78km | 26. Ultramarathon Okumusashi |
8:37:08 h | 364 |
| 2018 | ||||
| 17.11 | 52km | 4th FunTrails50K Two Lakes&Green line |
9:38:07 h | 260 |
| 29.09 | 6h | 7th Coedo Kawagoe Running Fest 6-hours run |
60.500 km | 6 |
| 08.07 | 49.6km | 7th Trainic world Ogose-Tokigawa Trail Run 50km |
10:00:34 h | 250 |
| 03.06 | 78km | 25. Ultramarathon Okumusashi |
9:19:00 h | 439 |
| 2016 | ||||
| 18.12 | 100km | 1st Okinawa 100km Ultramarathon |
11:40:25 h | 92 |
| 05.06 | 78km | 23. Ultramarathon Okumusashi |
9:21:10 h | 615 |
| 2015 | ||||
| 22.06 | 77km | 22. Ultramarathon Okumusashi |
9:24:15 h | 652 |
| 2014 | ||||
| 27.07 | 77km | 21. Ultramarathon Okumusashi |
9:44:02 h | 401 |
| 12.04 | 70km | 9th Toda Saiko 70 km |
7:30:24 h | 158 |
| 2013 | ||||
| 11.08 | 100km | 3rd North Okhotsk 100 km Marathon |
11:26:02 h | 84 |
| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 18/12/2016 | 1st Okinawa 100km Ultramarathon | 100,00 | ×3 |
| ✓ 2 | 11/8/2013 | 3rd North Okhotsk 100 km Marathon | 100,00 | ×3 |
| ✓ 3 | 4/6/2023 | 30. Ultramarathon Okumusashi | 78,00 | ×2 |
| ✓ 4 | 5/6/2022 | 29. Ultramarathon Okumusashi | 78,00 | ×2 |
| ✓ 5 | 2/6/2019 | 26. Ultramarathon Okumusashi | 78,00 | ×2 |
| ✓ 6 | 3/6/2018 | 25. Ultramarathon Okumusashi | 78,00 | ×2 |
| ✓ 7 | 5/6/2016 | 23. Ultramarathon Okumusashi | 78,00 | ×2 |
| ✓ 8 | 22/6/2015 | 22. Ultramarathon Okumusashi | 77,00 | ×2 |
| ✓ 9 | 27/7/2014 | 21. Ultramarathon Okumusashi | 77,00 | ×2 |
| ✓ 10 | 19/10/2025 | 32. Ultramarathon Okumusashi | 70,00 | ×2 |
| ✓ 11 | 20/10/2024 | 31. Ultramarathon Okumusashi | 70,00 | ×2 |
| ✓ 12 | 12/4/2014 | 9th Toda Saiko 70 km | 70,00 | ×2 |
| ✓ 13 | 29/9/2018 | 7th Coedo Kawagoe Running Fest 6-hours run | 60,50 | ×2 |
| ✓ 14 | 3/7/2022 | 28th 8-Hour Endurance Race Tokorozawa | 58,80 | ×1 |
| ✓ 15 | 17/11/2018 | 4th FunTrails50K Two Lakes&Green line | 52,00 | ×1 |
| ✓ 16 | 8/7/2018 | 7th Trainic world Ogose-Tokigawa Trail Run 50km | 49,60 | ×1 |