Yukihiro (城山幸博) Shiroyama
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.
Ultrarunner since 2023
2
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
16
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
Japan22,7%
Rank quotient ?This runner's calculation uses 2 eligible race(s): Σ(rank − 1) = 245; Σ finishers = 1 081. 245 / 1 081 × 100 = 22.66%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed2
Km — ultra races261 km
> 100 km1
> 160 km1
Longest race160,9 km
10th Lake Biwa Charity 100mi Walking Tournament — 19/10/2024
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Ult.Walk100,0%
Records
HISTORY
2 race(s)| Date | Race | Perf. | Rk | |
|---|---|---|---|---|
| 2024 | ||||
| 19.10 | 100mi | 10th Lake Biwa Charity 100mi Walking Tournament |
21:42:40 h | 106 |
| 2023 | ||||
| 14.10 | 100km | 9th Lake Biwa Charity 100km Walking Tournament |
22:37:57 h | 141 |
| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 19/10/2024 | 10th Lake Biwa Charity 100mi Walking Tournament | 160,93 | ×10 |
| ✓ 2 | 14/10/2023 | 9th Lake Biwa Charity 100km Walking Tournament | 100,00 | ×6 |