Mai (長谷川麻衣) Hasegawa
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 : 1978
Cat. W45 Ultrarunner since 2004
34
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
50
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
3
Countries visited ?
Hong KongJapan
New Zealand
Hong KongJapanNew Zealand40,7%
Rank quotient ?This runner's calculation uses 34 eligible race(s): Σ(rank − 1) = 5 048; Σ finishers = 12 412. 5 048 / 12 412 × 100 = 40.67%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed34
Km — ultra races2 991 km
> 100 km11
> 160 km1
Longest race169,0 km
5th Lake Biwa 100 — 10/10/2025
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Road9,1%
Trail90,9%
Wins & podiums (ultra)
🏆 Win0
🏆 Win F2
🏅 Top 30
🏅 Top 3 F6
Longest winning streak0
Current streak0
HISTORY
34 race(s)| Runner | Races in common |
|---|---|