Sonoko (鶴田園子) Tsuruta
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Born : 1972
Cat. W50 Ultrarunner since 2014
18
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
40
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
Japan75,5%
Rank quotient ?This runner's calculation uses 18 eligible race(s): Σ(rank − 1) = 7 701; Σ finishers = 10 199. 7 701 / 10 199 × 100 = 75.51%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed19
Km — ultra races2 032 km
> 100 km7
> 160 km2
Longest race200,0 km
16th Little Edo Oedo 200k — 14/3/2026
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Road92,7%
Stage7,3%
Wins & podiums (ultra)
🏆 Win0
🏆 Win F0
🏅 Top 30
🏅 Top 3 F1
Longest winning streak0
Current streak0
Records
HISTORY
18 race(s) · 2 stage(s) nested| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 14/3/2026 | 16th Little Edo Oedo 200k | 200,00 | ×5 |
| ✓ 2 | 26/4/2025 | 4th Reiheishi Michi Kyoto to Nikko - 175 km | 175,00 | ×4 |
| ✓ 3 | 2/4/2022 | 2nd Tone River Run Up Journey Run Downstream | 155,00 | ×3 |
| ✓ 4 | 29/3/2025 | 2nd Modern Japanese Silk Road Journey Run | 149,00 | ×3 |
| ✓ 5 | 30/10/2021 | 3rd Autumn leaves in Okumusashi / Chichibu Journey run | 146,00 | ×3 |
| ✓ 6 | 18/11/2023 | 1st Mito Kaido Journey run | 130,00 | ×3 |
| ✓ 7 | 3/3/2018 | 8th Oedo Night run 113k | 113,00 | ×2 |
| ✓ 8 | 24/9/2023 | 1st Mount Akagi 100 Ultra Marathon | 100,00 | ×2 |
| ✓ 9 | 9/10/2022 | 14th Echigo Kubikino 100km Ultramarathon | 100,00 | ×2 |
| ✓ 10 | 9/10/2016 | 11th Echigo Kubikino 100km Ultramarathon | 100,00 | ×2 |
| ✓ 11 | 12/10/2014 | 10th Echigo Kubikino 100km Ultramarathon | 100,00 | ×2 |
| ✓ 12 | 27/2/2021 | 11th Little Edo 91k | 91,00 | ×2 |
| ✓ 13 | 1/3/2014 | 4th Little Edo 91km | 91,00 | ×2 |
| ✓ 14 | 4/6/2023 | 30. Ultramarathon Okumusashi | 78,00 | ×1 |
| ✓ 15 | 5/6/2022 | 29. Ultramarathon Okumusashi | 78,00 | ×1 |
| ✓ 16 | 2/6/2019 | 26. Ultramarathon Okumusashi | 78,00 | ×1 |
| ✓ 17 | 22/6/2015 | 22. Ultramarathon Okumusashi | 77,00 | ×1 |
| ✓ 18 | 24/4/2016 | 26th Fuji 5 Lakes 71 km Challenge | 71,00 | ×1 |