Masato (横山真人) Yokoyama
Born : 1981 Cat. M45 Ultrarunner since 2018 JPN
20
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
45
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
11,2%
Rank quotient ?This runner's calculation uses 20 eligible race(s): Σ(rank − 1) = 1 490; Σ finishers = 13 318. 1 490 / 13 318 × 100 = 11.19%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed20
Km — ultra races2 496 km
> 100 km11
> 160 km10
Longest race200,0 km

Km per year (ultra races)

409
4 races
2022
263
2 races
2023
231
2 races
2024
854
5 races
2025
167
1 race
2026

Race types (share of distance)

Road20,8%
Trail79,2%

Wins & podiums (ultra)

🏆 Win0
🏆 Win M0
🏅 Top 31
🏅 Top 3 M1
Longest winning streak0
Current streak0