Osamu (倉地修) Kurashiri
External sources
Loading FFA
Loading MV
FFA diagnostics
Run “Search / refresh FFA” to see each season, HTTP response, candidate and DUV comparison.
MarathonView diagnostics
Run “Refresh MV” to see login, session validation and parser status.
Cached locally. Empty refreshes never erase the last valid snapshot.
Born : 1967
Cat. M55 Ultrarunner since 2012
10
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
27
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
Japan22,4%
Rank quotient ?This runner's calculation uses 10 eligible race(s): Σ(rank − 1) = 1 267; Σ finishers = 5 646. 1 267 / 5 646 × 100 = 22.44%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed10
Km — ultra races905 km
Longest race100,0 km
18. Okinoshima 100km Ultra Marathon — 15/6/2025
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Road100,0%
Wins & podiums (ultra)
🏆 Win0
🏆 Win M0
🏅 Top 31
🏅 Top 3 M1
Longest winning streak0
Current streak0
Records
HISTORY
10 race(s)| Date | Race | Perf. | Rk | |
|---|---|---|---|---|
| 2025 | ||||
| 15.06 | 100km | 18. Okinoshima 100km Ultra Marathon |
11:04:46 h | 34 |
| 25.05 | 100km | 31th Ebisu-Daikoku 100 km Marathon |
11:28:23 h | 131 |
| 2024 | ||||
| 20.10 | 100km | 30th River Shimanto 100km |
10:52:39 h | 281 |
| 30.06 | 100km | 39. Lake Saroma 100 km Ultramarathon |
9:40:23 h | 205 |
| 09.06 | 100km | 18th Iwate Ginga 100km Marathon Challenge |
12:18:58 h | 329 |
| 14.01 | 100km | 7th Yakushima Ultramarathon 100 km |
12:17:33 h | 14 |
| 2023 | ||||
| 21.10 | 100km | 6th Iki 100 km Ultra Marathon |
12:17:02 h | 154 |
| 2019 | ||||
| 19.10 | 100km | 4th Iki 100 km Ultra Marathon |
11:29:12 h | 75 |
| 2016 | ||||
| 19.06 | 50km | 11. Okinoshima 50km Ultra Marathon |
5:27:18 h | 51 |
| 2012 | ||||
| 03.06 | 55km | 12th Rishiri Island Ultra Marathon |
4:12:00 h | 3 🥉 |
| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 15/6/2025 | 18. Okinoshima 100km Ultra Marathon | 100,00 | ×3 |
| ✓ 2 | 25/5/2025 | 31th Ebisu-Daikoku 100 km Marathon | 100,00 | ×3 |
| ✓ 3 | 20/10/2024 | 30th River Shimanto 100km | 100,00 | ×3 |
| ✓ 4 | 30/6/2024 | 39. Lake Saroma 100 km Ultramarathon | 100,00 | ×3 |
| ✓ 5 | 9/6/2024 | 18th Iwate Ginga 100km Marathon Challenge | 100,00 | ×3 |
| ✓ 6 | 14/1/2024 | 7th Yakushima Ultramarathon 100 km | 100,00 | ×3 |
| ✓ 7 | 21/10/2023 | 6th Iki 100 km Ultra Marathon | 100,00 | ×3 |
| ✓ 8 | 19/10/2019 | 4th Iki 100 km Ultra Marathon | 100,00 | ×3 |
| ✓ 9 | 3/6/2012 | 12th Rishiri Island Ultra Marathon | 55,00 | ×2 |
| ✓ 10 | 19/6/2016 | 11. Okinoshima 50km Ultra Marathon | 50,00 | ×1 |