Ryota (峪口良太) Sakoguchi
ID 738031
Born : 1981 Cat. M45 Ultrarunner since 2014 JPN
6
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
20
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
29,4%
Rank quotient ?This runner's calculation uses 6 eligible race(s): Σ(rank − 1) = 1 109; Σ finishers = 3 773. 1 109 / 3 773 × 100 = 29.39%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed6
Km — ultra races502 km
> 100 km1
> 160 km1
Longest race160,9 km
2nd bambi 100 — 7/10/2023

Km per year (ultra races)

2022
161
1 race
2023
2024
2025
100
1 race
2026

Race types (share of distance)

Road42,2%
Trail57,8%

Records

100 km11h32'37100 mi32h27'00

HISTORY

6 race(s)
DateRacePerf.Rk
2026
31.05 100km JPN1st Nara Ultra Marathon 11:32:37 h444
2023
07.10 100mi JPN2nd bambi 100 32:27:00 h8
2021
16.10 56km JPN25th Mt. Rocco Cannonball Run - 56 km Speed 7:06:00 h44
2015
18.10 73km JPN6th OSJ Hyonosen Mountains Trail Race 13:19:07 h325
29.03 56km JPN12th Mt. Rocco Cannonball Run - 56 km Speed 8:40:00 h146
2014
30.03 56km JPN10th Mt. Rocco Cannonball Run - 56 km Speed 9:00:00 h148