Shinichiro (伊井慎一郎) Ii
ID 221946
Born : 1975 Cat. M50 Ultrarunner since 2011 JPN
9
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
25
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
2
Countries visited ?JPNJapanTHAThailand
28,4%
Rank quotient ?This runner's calculation uses 9 eligible race(s): Σ(rank − 1) = 1 861; Σ finishers = 6 557. 1 861 / 6 557 × 100 = 28.38%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed9
Km — ultra races804 km
> 100 km1
Longest race118,0 km
1st Fuji 5 Lakes 118 km Autumn Challenge — 7/10/2019

Km per year (ultra races)

2022
2023
2024
162
2 races
2025
100
1 race
2026

Race types (share of distance)

Road87,6%
Trail12,4%

Records

100 km10h27'22

HISTORY

9 race(s)
DateRacePerf.Rk
2026
14.06 100km JPN20th Iwate Ginga 100km Marathon Challenge 11:32:08 h208
2025
08.06 100km JPN19th Iwate Ginga 100km Marathon Challenge 10:27:22 h123
20.04 62km JPN35th Fuji 3 Lakes 62 km Challenge 6:22:32 h53
2020
05.01 52km THA2nd Ultra Park Run Thailand 52 km 4:30:32 h6
2019
07.10 118km JPN1st Fuji 5 Lakes 118 km Autumn Challenge 13:58:33 h67
2018
22.04 100km JPN28th Fuji 5 Lakes 100 km Challenge 10:37:01 h181
2013
21.04 100km JPN23rd Fuji 5 Lakes 100 km Challenge 12:28:24 h252
2012
20.05 100km JPN18th Yatsugatake Nobeyama 100 km 13:42:15 h809
2011
30.04 72km JPN21st Fuji 5 Lakes 72 km Challenge 8:49:42 h171