Satoshi (山田学司) Yamada
Born : 1976 Cat. M50 Ultrarunner since 2019 JPN
20
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
40
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
45,8%
Rank quotient ?This runner's calculation uses 20 eligible race(s): Σ(rank − 1) = 5 925; Σ finishers = 12 925. 5 925 / 12 925 × 100 = 45.84%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed20
Km — ultra races1 971 km
> 100 km8
> 160 km6
Longest race169,0 km
4th Lake Biwa 100 — 11/10/2024

Km per year (ultra races)

370
5 races
2022
277
2 races
2023
561
4 races
2024
268
3 races
2025
325
3 races
2026

Race types (share of distance)

Road8,5%
Trail91,5%