Takehiko (坂井健彦) Sakai
ID 830161
Born : 1961 Cat. M65 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.
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
51,5%
Rank quotient ?This runner's calculation uses 6 eligible race(s): Σ(rank − 1) = 979; Σ finishers = 1 901. 979 / 1 901 × 100 = 51.50%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed6
Km — ultra races540 km
> 100 km2
Longest race125,0 km
7th Fujisan Issyu Walking — 10/6/2023

Km per year (ultra races)

2022
125
1 race
2023
105
1 race
2024
100
1 race
2025
2026

Race types (share of distance)

Road39,8%
Ult.Walk60,2%

Records

50 km6h43'13100 km21h15'03

HISTORY

6 race(s)
DateRacePerf.Rk
2025
22.03 100km JPN1st Tokyo Story Ultra Walking 21:15:03 h59
2024
13.07 105km JPN4th Nihondaira and Suruganokuni Ultra Run 24:15:34 h39
2023
10.06 125km JPN7th Fujisan Issyu Walking 24:47:47 h57
2021
27.02 100km JPN3rd Hakone Kodo Ultra Walking 22:27:24 h35
2016
11.09 50km JPN1st Koyasan and Ryujin-Onsen 50 km Ultra Marathon 6:43:13 h387
05.06 60km JPN4th Tokyo Shibamata 60 km 7:24:37 h408