Asahi (臼井朝飛) Usui
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Born : 1991
Cat. M35 Ultrarunner since 2016
15
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
35
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
Japan66,3%
Rank quotient ?This runner's calculation uses 15 eligible race(s): Σ(rank − 1) = 8 596; Σ finishers = 12 975. 8 596 / 12 975 × 100 = 66.25%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed15
Km — ultra races1 563 km
> 100 km6
> 160 km3
Longest race167,0 km
10th Ultra-Trail Mt. Fuji (UTMF) — 25/4/2025
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Road6,4%
Trail93,6%
Records
HISTORY
15 race(s)| Date | Race | Perf. | Rk | |
|---|---|---|---|---|
| 2026 | ||||
| 25.04 | 70km | 5th KAI 70k |
15:46:49 h | 640 |
| 2025 | ||||
| 25.04 | 167km | 10th Ultra-Trail Mt. Fuji |
42:39:55 h | 1096 |
| 2023 | ||||
| 21.04 | 167km | 8th Ultra-Trail Mt. Fuji |
42:40:26 h | 1437 |
| 04.03 | 100km | 1st Minonokuni Yamajiro Trail 100 |
25:29:00 h | 23 |
| 2022 | ||||
| 16.07 | 106.5km | 14th OSJ Ontake 100km Ultra Trail |
18:46:38 h | 641 |
| 22.04 | 167km | 7th Ultra-Trail Mt. Fuji |
39:25:34 h | 1013 |
| 2019 | ||||
| 21.09 | 143km | 6th SkyView Ultra-Trail 140 - Yamada Noboru Memorial Cup |
34:25:37 h | 373 |
| 13.07 | 100km | 12th OSJ Ontake 100km Ultra Trail |
18:19:47 h | 732 |
| 09.06 | 100km | 8th Hida Takayama 100 km Ultramarathon |
12:46:05 h | 1055 |
| 2018 | ||||
| 17.11 | 106km | 4th FunTrails100K Round |
27:43:58 h | 262 |
| 28.04 | 92km | 5th Shizuoka to Yamanashi |
19:28:10 h | 468 |
| 2017 | ||||
| 10.12 | 71.7km | 4th Izu Trail Journey |
11:50:28 h | 494 |
| 09.07 | 49.8km | 5th Trainic world Chichibu Trail Run 50km |
9:51:21 h | 120 |
| 18.06 | 53km | 3rd Echigo Country Trail |
7:46:04 h | 98 |
| 2016 | ||||
| 16.12 | 70km | Coast to Coast 70k Trail Run |
9:28:43 h | 159 |
| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 25/4/2025 | 10th Ultra-Trail Mt. Fuji (UTMF) | 167,00 | ×4 |
| ✓ 2 | 21/4/2023 | 8th Ultra-Trail Mt. Fuji (UTMF) | 167,00 | ×4 |
| ✓ 3 | 22/4/2022 | 7th Ultra-Trail Mt. Fuji (UTMF) | 167,00 | ×4 |
| ✓ 4 | 21/9/2019 | 6th SkyView Ultra-Trail 140 - Yamada Noboru Memorial Cup | 143,00 | ×4 |
| ✓ 5 | 16/7/2022 | 14th OSJ Ontake 100km Ultra Trail | 106,50 | ×3 |
| ✓ 6 | 17/11/2018 | 4th FunTrails100K Round | 106,00 | ×3 |
| ✓ 7 | 4/3/2023 | 1st Minonokuni Yamajiro Trail 100 | 100,00 | ×2 |
| ✓ 8 | 13/7/2019 | 12th OSJ Ontake 100km Ultra Trail | 100,00 | ×2 |
| ✓ 9 | 9/6/2019 | 8th Hida Takayama 100 km Ultramarathon | 100,00 | ×2 |
| ✓ 10 | 28/4/2018 | 5th Shizuoka to Yamanashi (STY) | 92,00 | ×2 |
| ✓ 11 | 10/12/2017 | 4th Izu Trail Journey | 71,70 | ×2 |
| ✓ 12 | 25/4/2026 | 5th KAI 70k | 70,00 | ×2 |
| ✓ 13 | 16/12/2016 | Coast to Coast 70k Trail Run | 70,00 | ×2 |
| ✓ 14 | 18/6/2017 | 3rd Echigo Country Trail | 53,00 | ×1 |
| ✓ 15 | 9/7/2017 | 5th Trainic world Chichibu Trail Run 50km | 49,80 | ×1 |