Yukie (中川原幸江) Nakagawara
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9
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
26
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
75,5%
Rank quotient ?This runner's calculation uses 9 eligible race(s): Σ(rank − 1) = 13 310; Σ finishers = 17 639. 13 310 / 17 639 × 100 = 75.46%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed9
Km — ultra races842 km
Longest race100,0 km
41. Lake Saroma 100 km Ultramarathon — 28/6/2026
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Road100,0%
Records
HISTORY
9 race(s)| Date | Race | Perf. | Rk | |
|---|---|---|---|---|
| 2026 | ||||
| 28.06 | 100km | 12:54:17 h | 2449 | |
| 19.04 | 80km | 11:08:58 h | 192 | |
| 2024 | ||||
| 30.06 | 100km | 12:45:38 h | 1515 | |
| 21.04 | 62km | 8:23:50 h | 485 | |
| 2019 | ||||
| 30.06 | 100km | 12:18:53 h | 1526 | |
| 2018 | ||||
| 24.06 | 100km | 12:18:33 h | 1582 | |
| 2017 | ||||
| 25.06 | 100km | 12:11:25 h | 1360 | |
| 2015 | ||||
| 28.06 | 100km | 12:51:08 h | 2476 | |
| 2014 | ||||
| 29.06 | 100km | 12:55:15 h | 1734 | |
| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 28/6/2026 | 41. Lake Saroma 100 km Ultramarathon | 100,00 | ×3 |
| ✓ 2 | 30/6/2024 | 39. Lake Saroma 100 km Ultramarathon | 100,00 | ×3 |
| ✓ 3 | 30/6/2019 | 34. Lake Saroma 100 km Ultramarathon | 100,00 | ×3 |
| ✓ 4 | 24/6/2018 | 33. Lake Saroma 100 km Ultramarathon | 100,00 | ×3 |
| ✓ 5 | 25/6/2017 | 32. Lake Saroma 100 km Ultramarathon | 100,00 | ×3 |
| ✓ 6 | 28/6/2015 | 30. Lake Saroma 100 km Ultramarathon | 100,00 | ×3 |
| ✓ 7 | 29/6/2014 | 29. Lake Saroma 100 km Ultramarathon | 100,00 | ×3 |
| ✓ 8 | 19/4/2026 | 36th Fuji 4 Lakes 80 km Challenge | 80,00 | ×3 |
| ✓ 9 | 21/4/2024 | 34th Fuji 3 Lakes 62 km Challenge | 62,00 | ×2 |