Yuka (森藤由花) Morifuji
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Born : 1973
Cat. W50 Ultrarunner since 2017
14
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
Japan32,9%
Rank quotient ?This runner's calculation uses 14 eligible race(s): Σ(rank − 1) = 1 317; Σ finishers = 3 997. 1 317 / 3 997 × 100 = 32.95%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed14
Km — ultra races1 144 km
> 100 km3
> 160 km1
Longest race167,0 km
4th Kumagawa Revival Trail — 15/11/2025
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Road46,7%
Trail53,3%
Wins & podiums (ultra)
🏆 Win0
🏆 Win F0
🏅 Top 30
🏅 Top 3 F1
Longest winning streak0
Current streak0
Records
HISTORY
14 race(s)| Date | Race | Perf. | Rk | |
|---|---|---|---|---|
| 2026 | ||||
| 09.05 | 114km | 4th Aso Volcano Trail |
22:03:42 h | 163 |
| 15.02 | 46km | 3rd Nagasaki Round Trail |
8:24:21 h | 16 |
| 2025 | ||||
| 15.11 | 167km | 4th Kumagawa Revival Trail |
36:25:27 h | 43 |
| 02.11 | 52km | 7th Saioto Colors |
9:15:27 h | 31 |
| 10.05 | 115.1km | 3rd Aso Volcano Trail |
22:06:02 h | 219 |
| 2024 | ||||
| 15.12 | 100km | 7th Okinawa 100km Ultramarathon |
11:33:05 h | 164 |
| 21.07 | 66km | 12th Kirishima Ebino-kougen Extreme Trail |
10:55:48 h | 70 |
| 26.05 | 50km | 9th Akiyoshidai Karst Trail Run |
6:46:35 h | 71 |
| 2022 | ||||
| 12.06 | 84.39km | 6th JAL Mukatsuku Double Marathon |
10:06:45 h | 133 |
| 2021 | ||||
| 18.07 | 65km | 1st Yamaguchi Hagi Return |
9:55:22 h | 97 |
| 2019 | ||||
| 19.10 | 50km | 4th Iki 50 km Ultra Marathon |
4:54:04 h | 27 |
| 09.06 | 84.39km | 3rd JAL Mukatsuku Double Marathon |
9:46:41 h | 110 |
| 2018 | ||||
| 20.10 | 100km | 3rd Iki 100 km Ultra Marathon |
12:32:08 h | 161 |
| 2017 | ||||
| 21.10 | 50km | 2nd Iki 50 km Ultra Marathon |
4:55:52 h | 26 |
| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 15/11/2025 | 4th Kumagawa Revival Trail | 167,00 | ×5 |
| ✓ 2 | 10/5/2025 | 3rd Aso Volcano Trail | 115,10 | ×3 |
| ✓ 3 | 9/5/2026 | 4th Aso Volcano Trail | 114,00 | ×3 |
| ✓ 4 | 15/12/2024 | 7th Okinawa 100km Ultramarathon | 100,00 | ×3 |
| ✓ 5 | 20/10/2018 | 3rd Iki 100 km Ultra Marathon | 100,00 | ×3 |
| ✓ 6 | 12/6/2022 | 6th JAL Mukatsuku Double Marathon | 84,39 | ×2 |
| ✓ 7 | 9/6/2019 | 3rd JAL Mukatsuku Double Marathon | 84,39 | ×2 |
| ✓ 8 | 21/7/2024 | 12th Kirishima Ebino-kougen Extreme Trail | 66,00 | ×2 |
| ✓ 9 | 18/7/2021 | 1st Yamaguchi Hagi Return | 65,00 | ×2 |
| ✓ 10 | 2/11/2025 | 7th Saioto Colors | 52,00 | ×1 |
| ✓ 11 | 26/5/2024 | 9th Akiyoshidai Karst Trail Run | 50,00 | ×1 |
| ✓ 12 | 19/10/2019 | 4th Iki 50 km Ultra Marathon | 50,00 | ×1 |
| ✓ 13 | 21/10/2017 | 2nd Iki 50 km Ultra Marathon | 50,00 | ×1 |
| ✓ 14 | 15/2/2026 | 3rd Nagasaki Round Trail | 46,00 | ×1 |