Yudai (古見雄大) Furumi
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Born : 1978
Cat. M45 Ultrarunner since 2017
8
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
20
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
Japan50,4%
Rank quotient ?This runner's calculation uses 8 eligible race(s): Σ(rank − 1) = 1 306; Σ finishers = 2 589. 1 306 / 2 589 × 100 = 50.44%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed8
Km — ultra races489 km
Longest race100,0 km
7th 100 km Ultramarathon Hakusan-Shirakawago — 8/9/2019
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Road57,7%
Trail42,3%
Records
HISTORY
8 race(s)| Date | Race | Perf. | Rk | |
|---|---|---|---|---|
| 2025 | ||||
| 14.06 | 48km | 4th KTF Trail running race - Rockin Bear |
7:18:09 h | 316 |
| 2019 | ||||
| 15.09 | 60km | 19th Tango 60 km Ultramarathon |
7:14:46 h | 151 |
| 08.09 | 100km | 7th 100 km Ultramarathon Hakusan-Shirakawago |
13:41:14 h | 329 |
| 16.06 | 53km | 5th Echigo Country Trail |
8:31:20 h | 184 |
| 2018 | ||||
| 14.11 | 58km | 3rd Myoko Ultra Run rAce 18 |
7:28:09 h | 58 |
| 30.09 | 64km | 5th Naeba-Sanroku Geopark Tsunan Ultramarathon 64K |
8:01:52 h | 23 |
| 17.06 | 53km | 4th Echigo Country Trail |
8:26:39 h | 130 |
| 2017 | ||||
| 18.06 | 53km | 3rd Echigo Country Trail |
8:06:51 h | 123 |
| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 8/9/2019 | 7th 100 km Ultramarathon Hakusan-Shirakawago | 100,00 | ×5 |
| ✓ 2 | 30/9/2018 | 5th Naeba-Sanroku Geopark Tsunan Ultramarathon 64K | 64,00 | ×3 |
| ✓ 3 | 15/9/2019 | 19th Tango 60 km Ultramarathon | 60,00 | ×3 |
| ✓ 4 | 14/11/2018 | 3rd Myoko Ultra Run rAce 18 | 58,00 | ×2 |
| ✓ 5 | 16/6/2019 | 5th Echigo Country Trail | 53,00 | ×2 |
| ✓ 6 | 17/6/2018 | 4th Echigo Country Trail | 53,00 | ×2 |
| ✓ 7 | 18/6/2017 | 3rd Echigo Country Trail | 53,00 | ×2 |
| ✓ 8 | 14/6/2025 | 4th KTF Trail running race - Rockin Bear | 48,00 | ×2 |