Kazuyasu (市原和康) Ichihara
ID 981359
Ultrarunner since 2017 JPN
5
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
21
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 ?JPNJapan
28,6%
Rank quotient ?This runner's calculation uses 5 eligible race(s): Σ(rank − 1) = 747; Σ finishers = 2 616. 747 / 2 616 × 100 = 28.56%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed5
Km — ultra races525 km
> 100 km1
Longest race125,0 km
7th Fujisan Issyu Walking — 10/6/2023

Km per year (ultra races)

100
1 race
2022
225
2 races
2023
2024
2025
2026

Race types (share of distance)

Road38,1%
Trail38,1%
Ult.Walk23,8%

Records

100 km11h25'50

HISTORY

5 race(s)
DateRacePerf.Rk
2023
10.06 125km JPN7th Fujisan Issyu Walking 24:49:46 h59
27.05 100km JPN5th Tsukuba Rinrin Road 100km 20:10:00 h92
2022
28.05 100km JPN4th Tsukuba Rinrin Road 100km 19:46:00 h68
2018
17.06 100km JPN2nd Nikko 100km Ultramarathon 11:25:50 h218
2017
02.07 100km JPN1st Nikko 100km Ultramarathon 11:54:59 h315