Kazuo (山崎一夫) Yamazaki
ID 838320
Born : 1949 Cat. M75 Ultrarunner since 2016 JPN
6
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
22
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
58,2%
Rank quotient ?This runner's calculation uses 6 eligible race(s): Σ(rank − 1) = 2 870; Σ finishers = 4 929. 2 870 / 4 929 × 100 = 58.23%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed6
Km — ultra races575 km
> 100 km1
> 160 km1
> 200 km1
Longest race204,0 km
9th Little Edo Oedo 200k — 23/2/2019

Km per year (ultra races)

54
1 race
2022
2023
2024
2025
2026

Race types (share of distance)

Road91,6%
Trail8,4%

Records

100 km12h00'52

HISTORY

6 race(s)
DateRacePerf.Rk
2022
03.07 8h JPN28th 8-Hour Endurance Race Tokorozawa 53.900 km165
2019
25.08 48km JPN6th Tsukuba Renjyo 48 km Road & Trail Run 7:39:52 h169
29.06 8h JPN25th 8-Hour Endurance Race Tokorozawa 68.600 km106
23.02 204km JPN9th Little Edo Oedo 200k 35:06:10 h206
2018
22.04 100km JPN28th Fuji 5 Lakes 100 km Challenge 12:48:53 h662
2016
26.06 100km JPN31. Lake Saroma 100 km Ultramarathon 12:00:52 h1568